The purpose of this work is to analyze game recommendations made by users of the Steam platform. For this, association rules will be used, an unsupervised learning technique employed to analyze patterns and similarities in data.

Data sources

https://www.kaggle.com/datasets/antonkozyriev/game-recommendations-on-steam - The dataset contains over 41 million cleaned and preprocessed user recommendations (reviews) from a Steam Store - a leading online platform for purchasing and downloading video games, DLC, and other gaming-related content.

https://www.kaggle.com/datasets/fronkongames/steam-games-dataset/data - Information on more than 97,000 games published on Steam.

The datasets were collected from Steam Official Store.

Data preparation

dane <- fread("recommendations.csv",select = c("app_id", "is_recommended", "user_id"))
dane2 <- fread("games.csv",select = c("AppID", "Name","Genres","Release date","Developers","Publishers"))

dane2 <- dane2 %>%
  filter(!if_any(everything(), ~ . == "")) # deleting observations with lack of some data about game

dane2$"Release date" <- year(mdy(dane2$"Release date")) #changing string with day,month and year to year only

dane2$Genres <- ifelse(dane2$Genres == "", "no genre", dane2$Genres)
uniqueGenres <- unique(unlist(str_split(dane2$Genres, "\\,")))
uniqueGenres
##  [1] "Casual"                "Indie"                 "Sports"               
##  [4] "Action"                "Adventure"             "Strategy"             
##  [7] "Free to Play"          "Massively Multiplayer" "RPG"                  
## [10] "Simulation"            "Early Access"          "Racing"               
## [13] "Utilities"             "Education"             "Sexual Content"       
## [16] "Nudity"                "Violent"               "Gore"                 
## [19] "Design & Illustration" "Animation & Modeling"  "Game Development"     
## [22] "Web Publishing"        "Software Training"     "Photo Editing"        
## [25] "Audio Production"      "Video Production"      "Accounting"           
## [28] "Movie"                 "Documentary"           "Episodic"             
## [31] "Short"                 "Tutorial"              "360 Video"            
## [34] "Free To Play"
dane2 %>% filter(str_detect(Genres, "no genre")) %>% nrow()
## [1] 0
dane2 <- dane2[! dane2$Genres == "no genre", ] #deleting games with no genre listed

colnames(dane2)[1] ="app_id"

for(genre in uniqueGenres) {
  dane2[[str_c("genre_", genre)]] = ifelse(str_detect(dane2$Genres, genre), 1, 0)
}
genreDist <- colSums(dane2[, 7:39])
genreDistDF <- data.frame(genre = names(genreDist),count = genreDist)
genreDistDF$genre <- str_sub(str_trim(genreDistDF$genre), start = 7, end = -1)
genreDistDF # genres of games from Steam
##                                             genre count
## genre_Casual                               Casual 39119
## genre_Indie                                 Indie 64195
## genre_Sports                               Sports  4225
## genre_Action                               Action 37799
## genre_Adventure                         Adventure 35735
## genre_Strategy                           Strategy 17692
## genre_Free to Play                   Free to Play  7889
## genre_Massively Multiplayer Massively Multiplayer  2405
## genre_RPG                                     RPG 16606
## genre_Simulation                       Simulation 18510
## genre_Early Access                   Early Access 12052
## genre_Racing                               Racing  3458
## genre_Utilities                         Utilities   921
## genre_Education                         Education   416
## genre_Sexual Content               Sexual Content   107
## genre_Nudity                               Nudity   120
## genre_Violent                             Violent   523
## genre_Gore                                   Gore   309
## genre_Design & Illustration Design & Illustration   536
## genre_Animation & Modeling   Animation & Modeling   440
## genre_Game Development           Game Development   258
## genre_Web Publishing               Web Publishing   115
## genre_Software Training         Software Training   216
## genre_Photo Editing                 Photo Editing   150
## genre_Audio Production           Audio Production   217
## genre_Video Production           Video Production   316
## genre_Accounting                       Accounting    26
## genre_Movie                                 Movie     2
## genre_Documentary                     Documentary     1
## genre_Episodic                           Episodic     1
## genre_Short                                 Short     2
## genre_Tutorial                           Tutorial     1
## genre_360 Video                         360 Video     1
dane2 = dane2[,1:6]
dane2 = dane2[,-3]
dane <- dane[dane$is_recommended == TRUE, ] #only positive opinions
dane = dane[,-2]

dane <- dane %>%
  group_by(user_id) %>%
  filter(n() >= 10) %>%
  ungroup() # users with more than 10 recommendations

dane = merge(dane,dane2)

matrix1 <- as(split(dane$Name, dane$user_id), "transactions")

matrix1 #matrix of transactions with names of games
## transactions in sparse format with
##  548339 transactions (rows) and
##  36293 items (columns)
matrix2 <- as(split(dane$app_id, dane$user_id), "transactions")

matrix2 #matrix of transactions for later processing
## transactions in sparse format with
##  548339 transactions (rows) and
##  36375 items (columns)

Because of the technical limitations, I will analyze only recommendations from users with 10 positive opinions about games. app_id is the id of an application from the Steam Store. Almost all of them are computer games and I will refer to them as simply games in whole paper. We have 11 mln observations in the merged dataset at the moment.

Genres

(from Wikipedia - https://en.wikipedia.org/wiki/Indie_game) An indie video game or indie game, short for independent video game, is a video game created by individuals or smaller development teams without the financial and technical support of a large game publisher.

From more than 90 thousand games in the dataset, 2/3 of them are indie games, which makes sense, because the majority of games are developed in small studios. Casual, Action and Adventure categories are listed in almost half of the games. Near 10 thousand games are early access games, a popular feature at the Steam Store, where gamers have access to developing games before their premiere. Simulation, RPG and Strategy games are a big chunk of games on Steam too.

genreDistDF <- genreDistDF %>% arrange(desc(count))
genreDistDF2 = genreDistDF[1:10,]
ggplot(genreDistDF2, aes(x = reorder(genre, -count), y = count, fill = genre)) + geom_bar(stat = "identity") + ggtitle("Distribution of Genres") + theme(legend.position = "none", axis.text.x = element_text(angle = 90)) + xlab("Genre") + ylab("Count")

Apriori algorithm

I run apriori algorithm with relaxed conditions to find as many rules in data as possible.

ruleParameters <- list(supp = 0.001, conf = 0.01, maxlen = 2)

associationRules <- apriori(matrix2, parameter = ruleParameters)
## Apriori
## 
## Parameter specification:
##  confidence minval smax arem  aval originalSupport maxtime support minlen
##        0.01    0.1    1 none FALSE            TRUE       5   0.001      1
##  maxlen target  ext
##       2  rules TRUE
## 
## Algorithmic control:
##  filter tree heap memopt load sort verbose
##     0.1 TRUE TRUE  FALSE TRUE    2    TRUE
## 
## Absolute minimum support count: 548 
## 
## set item appearances ...[0 item(s)] done [0.00s].
## set transactions ...[36375 item(s), 548339 transaction(s)] done [3.27s].
## sorting and recoding items ... [2872 item(s)] done [0.16s].
## creating transaction tree ... done [0.60s].
## checking subsets of size 1 2
##  done [0.76s].
## writing ... [48656 rule(s)] done [0.01s].
## creating S4 object  ... done [0.07s].
AS <- apriori(matrix1, parameter = ruleParameters)
## Apriori
## 
## Parameter specification:
##  confidence minval smax arem  aval originalSupport maxtime support minlen
##        0.01    0.1    1 none FALSE            TRUE       5   0.001      1
##  maxlen target  ext
##       2  rules TRUE
## 
## Algorithmic control:
##  filter tree heap memopt load sort verbose
##     0.1 TRUE TRUE  FALSE TRUE    2    TRUE
## 
## Absolute minimum support count: 548 
## 
## set item appearances ...[0 item(s)] done [0.00s].
## set transactions ...[36293 item(s), 548339 transaction(s)] done [3.58s].
## sorting and recoding items ... [2872 item(s)] done [0.16s].
## creating transaction tree ... done [0.59s].
## checking subsets of size 1 2
##  done [1.14s].
## writing ... [48656 rule(s)] done [0.02s].
## creating S4 object  ... done [0.10s].
summary(associationRules)
## set of 48656 rules
## 
## rule length distribution (lhs + rhs):sizes
##     1     2 
##   422 48234 
## 
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##   1.000   2.000   2.000   1.991   2.000   2.000 
## 
## summary of quality measures:
##     support           confidence         coverage             lift         
##  Min.   :0.001001   Min.   :0.01004   Min.   :0.001492   Min.   :  0.4169  
##  1st Qu.:0.001182   1st Qu.:0.03830   1st Qu.:0.019012   1st Qu.:  1.4335  
##  Median :0.001468   Median :0.05847   Median :0.027837   Median :  1.9652  
##  Mean   :0.002011   Mean   :0.07312   Mean   :0.041142   Mean   :  3.0994  
##  3rd Qu.:0.002072   3rd Qu.:0.08971   3rd Qu.:0.041786   3rd Qu.:  2.8834  
##  Max.   :0.098833   Max.   :0.79682   Max.   :1.000000   Max.   :345.5312  
##      count      
##  Min.   :  549  
##  1st Qu.:  648  
##  Median :  805  
##  Mean   : 1103  
##  3rd Qu.: 1136  
##  Max.   :54194  
## 
## mining info:
##     data ntransactions support confidence
##  matrix2        548339   0.001       0.01
##                                                 call
##  apriori(data = matrix2, parameter = ruleParameters)
inspect(sort(AS, by = "lift")[1:100])
##       lhs                                                        rhs                                                         support confidence    coverage      lift count
## [1]   {fault - milestone two side:above}                      => {fault - milestone one}                                 0.001161690  0.6969365 0.001666852 345.53118   637
## [2]   {fault - milestone one}                                 => {fault - milestone two side:above}                      0.001161690  0.5759494 0.002017000 345.53118   637
## [3]   {Yakuza 5 Remastered}                                   => {Yakuza 4 Remastered}                                   0.001528252  0.6486068 0.002356207 269.64095   838
## [4]   {Yakuza 4 Remastered}                                   => {Yakuza 5 Remastered}                                   0.001528252  0.6353298 0.002405446 269.64095   838
## [5]   {Zup! 6}                                                => {Zup! 5}                                                0.001074153  0.5802956 0.001851045 252.13842   589
## [6]   {Zup! 5}                                                => {Zup! 6}                                                0.001074153  0.4667195 0.002301496 252.13842   589
## [7]   {Hexcells Plus}                                         => {Hexcells}                                              0.001311233  0.7458506 0.001758037 228.35231   719
## [8]   {Hexcells}                                              => {Hexcells Plus}                                         0.001311233  0.4014517 0.003266228 228.35231   719
## [9]   {Zup! 4}                                                => {Zup! 5}                                                0.001258346  0.5203620 0.002418212 226.09729   690
## [10]  {Zup! 5}                                                => {Zup! 4}                                                0.001258346  0.5467512 0.002301496 226.09729   690
## [11]  {Zup! 4}                                                => {Zup! 6}                                                0.001004853  0.4155354 0.002418212 224.48699   551
## [12]  {Zup! 6}                                                => {Zup! 4}                                                0.001004853  0.5428571 0.001851045 224.48699   551
## [13]  {Zup! 4}                                                => {Zup! Zero}                                             0.001119745  0.4630468 0.002418212 223.70625   614
## [14]  {Zup! Zero}                                             => {Zup! 4}                                                0.001119745  0.5409692 0.002069887 223.70625   614
## [15]  {Zup! Zero}                                             => {Zup! 5}                                                0.001048621  0.5066079 0.002069887 220.12115   575
## [16]  {Zup! 5}                                                => {Zup! Zero}                                             0.001048621  0.4556260 0.002301496 220.12115   575
## [17]  {Yakuza 5 Remastered}                                   => {Yakuza 6: The Song of Life}                            0.001289348  0.5472136 0.002356207 219.50151   707
## [18]  {Yakuza 6: The Song of Life}                            => {Yakuza 5 Remastered}                                   0.001289348  0.5171909 0.002492983 219.50151   707
## [19]  {Rusty Lake Paradise}                                   => {Rusty Lake: Roots}                                     0.001139806  0.6021195 0.001892990 218.50800   625
## [20]  {Rusty Lake: Roots}                                     => {Rusty Lake Paradise}                                   0.001139806  0.4136334 0.002755595 218.50800   625
## [21]  {Yakuza 4 Remastered}                                   => {Yakuza 3 Remastered}                                   0.001737976  0.7225171 0.002405446 214.38543   953
## [22]  {Yakuza 3 Remastered}                                   => {Yakuza 4 Remastered}                                   0.001737976  0.5156926 0.003370178 214.38543   953
## [23]  {Yakuza 6: The Song of Life}                            => {Yakuza 4 Remastered}                                   0.001205459  0.4835406 0.002492983 201.01908   661
## [24]  {Yakuza 4 Remastered}                                   => {Yakuza 6: The Song of Life}                            0.001205459  0.5011372 0.002405446 201.01908   661
## [25]  {Yakuza 3 Remastered}                                   => {Yakuza 5 Remastered}                                   0.001486307  0.4410173 0.003370178 187.17260   815
## [26]  {Yakuza 5 Remastered}                                   => {Yakuza 3 Remastered}                                   0.001486307  0.6308050 0.002356207 187.17260   815
## [27]  {Zup! 4}                                                => {Zup! 3}                                                0.001548312  0.6402715 0.002418212 173.03392   849
## [28]  {Zup! 3}                                                => {Zup! 4}                                                0.001548312  0.4184327 0.003700266 173.03392   849
## [29]  {Chaos on Deponia}                                      => {Deponia}                                               0.001096037  0.7347188 0.001491778 159.74425   601
## [30]  {Deponia}                                               => {Chaos on Deponia}                                      0.001096037  0.2383029 0.004599345 159.74425   601
## [31]  {Zup! 5}                                                => {Zup! 3}                                                0.001278406  0.5554675 0.002301496 150.11557   701
## [32]  {Zup! 3}                                                => {Zup! 5}                                                0.001278406  0.3454904 0.003700266 150.11557   701
## [33]  {Zup! 3}                                                => {Zup! 6}                                                0.001024913  0.2769837 0.003700266 149.63644   562
## [34]  {Zup! 6}                                                => {Zup! 3}                                                0.001024913  0.5536946 0.001851045 149.63644   562
## [35]  {Zup! Zero}                                             => {Zup! 3}                                                0.001139806  0.5506608 0.002069887 148.81655   625
## [36]  {Zup! 3}                                                => {Zup! Zero}                                             0.001139806  0.3080335 0.003700266 148.81655   625
## [37]  {Rusty Lake Paradise}                                   => {Rusty Lake Hotel}                                      0.001010324  0.5337187 0.001892990 148.18166   554
## [38]  {Rusty Lake Hotel}                                      => {Rusty Lake Paradise}                                   0.001010324  0.2805063 0.003601786 148.18166   554
## [39]  {Senren*Banka}                                         => {Riddle Joker}                                          0.001044974  0.2606915 0.004008469 146.76318   573
## [40]  {Riddle Joker}                                          => {Senren*Banka}                                         0.001044974  0.5882957 0.001776273 146.76318   573
## [41]  {Yakuza 6: The Song of Life}                            => {Yakuza 3 Remastered}                                   0.001227343  0.4923189 0.002492983 146.08100   673
## [42]  {Yakuza 3 Remastered}                                   => {Yakuza 6: The Song of Life}                            0.001227343  0.3641775 0.003370178 146.08100   673
## [43]  {Call of Duty®}                                         => {Call of Duty® 2}                                       0.001130687  0.4707669 0.002401799 143.89066   620
## [44]  {Call of Duty® 2}                                       => {Call of Duty®}                                         0.001130687  0.3455964 0.003271699 143.89066   620
## [45]  {Hexcells Infinite}                                     => {Hexcells}                                              0.001081448  0.4607615 0.002347088 141.06839   593
## [46]  {Hexcells}                                              => {Hexcells Infinite}                                     0.001081448  0.3310999 0.003266228 141.06839   593
## [47]  {Hyperdimension Neptunia Re;Birth1}                     => {Hyperdimension Neptunia Re;Birth2: Sisters Generation} 0.001322175  0.2515614 0.005255873 136.57518   725
## [48]  {Hyperdimension Neptunia Re;Birth2: Sisters Generation} => {Hyperdimension Neptunia Re;Birth1}                     0.001322175  0.7178218 0.001841926 136.57518   725
## [49]  {Zup! 4}                                                => {Zup! 2}                                                0.001550136  0.6410256 0.002418212 130.47489   850
## [50]  {Zup! 2}                                                => {Zup! 4}                                                0.001550136  0.3155160 0.004913019 130.47489   850
## [51]  {Gothic II: Gold Edition}                               => {Gothic 1}                                              0.001871105  0.5366109 0.003486894 128.88510  1026
## [52]  {Gothic 1}                                              => {Gothic II: Gold Edition}                               0.001871105  0.4494087 0.004163483 128.88510  1026
## [53]  {METAL SLUG X}                                          => {METAL SLUG 3}                                          0.001032208  0.5390476 0.001914874 127.68071   566
## [54]  {METAL SLUG 3}                                          => {METAL SLUG X}                                          0.001032208  0.2444924 0.004221841 127.68071   566
## [55]  {Five Nights at Freddy's 4}                             => {Five Nights at Freddy's 3}                             0.001158043  0.3529739 0.003280817 126.17297   635
## [56]  {Five Nights at Freddy's 3}                             => {Five Nights at Freddy's 4}                             0.001158043  0.4139505 0.002797539 126.17297   635
## [57]  {Rusty Lake: Roots}                                     => {Rusty Lake Hotel}                                      0.001251051  0.4540040 0.002755595 126.04966   686
## [58]  {Rusty Lake Hotel}                                      => {Rusty Lake: Roots}                                     0.001251051  0.3473418 0.003601786 126.04966   686
## [59]  {The Dark Pictures Anthology: Man of Medan}             => {The Dark Pictures Anthology: Little Hope}              0.001085095  0.2889752 0.003754976 118.87201   595
## [60]  {The Dark Pictures Anthology: Little Hope}              => {The Dark Pictures Anthology: Man of Medan}             0.001085095  0.4463616 0.002430978 118.87201   595
## [61]  {Zup! 5}                                                => {Zup! 2}                                                0.001300291  0.5649762 0.002301496 114.99573   713
## [62]  {Zup! 2}                                                => {Zup! 5}                                                0.001300291  0.2646622 0.004913019 114.99573   713
## [63]  {Zup! Zero}                                             => {Zup! 2}                                                0.001154395  0.5577093 0.002069887 113.51660   633
## [64]  {Zup! 2}                                                => {Zup! Zero}                                             0.001154395  0.2349666 0.004913019 113.51660   633
## [65]  {Gothic II: Gold Edition}                               => {Gothic® 3}                                             0.001085095  0.3111925 0.003486894 112.18867   595
## [66]  {Gothic® 3}                                             => {Gothic II: Gold Edition}                               0.001085095  0.3911900 0.002773832 112.18867   595
## [67]  {Zup! 2}                                                => {Zup! 6}                                                0.001008500  0.2052710 0.004913019 110.89466   553
## [68]  {Zup! 6}                                                => {Zup! 2}                                                0.001008500  0.5448276 0.001851045 110.89466   553
## [69]  {Zup!}                                                  => {Zup! 4}                                                0.001522781  0.2674568 0.005693558 110.60103   835
## [70]  {Zup! 4}                                                => {Zup!}                                                  0.001522781  0.6297134 0.002418212 110.60103   835
## [71]  {Kingdom Rush Frontiers - Tower Defense}                => {Kingdom Rush  - Tower Defense}                         0.001207282  0.4603616 0.002622465 108.94874   662
## [72]  {Kingdom Rush  - Tower Defense}                         => {Kingdom Rush Frontiers - Tower Defense}                0.001207282  0.2857143 0.004225488 108.94874   662
## [73]  {Five Nights at Freddy's 3}                             => {Five Nights at Freddy's 2}                             0.001531899  0.5475880 0.002797539 105.61515   840
## [74]  {Five Nights at Freddy's 2}                             => {Five Nights at Freddy's 3}                             0.001531899  0.2954625 0.005184749 105.61515   840
## [75]  {The Room 4: Old Sins}                                  => {The Room Three}                                        0.001535546  0.4170381 0.003682029 105.13944   842
## [76]  {The Room Three}                                        => {The Room 4: Old Sins}                                  0.001535546  0.3871264 0.003966524 105.13944   842
## [77]  {Zup! 3}                                                => {Zup! 2}                                                0.001909403  0.5160177 0.003700266 105.03068  1047
## [78]  {Zup! 2}                                                => {Zup! 3}                                                0.001909403  0.3886414 0.004913019 105.03068  1047
## [79]  {STEINS;GATE}                                           => {STEINS;GATE 0}                                         0.001761684  0.2670722 0.006596284 104.08392   966
## [80]  {STEINS;GATE 0}                                         => {STEINS;GATE}                                           0.001761684  0.6865672 0.002565931 104.08392   966
## [81]  {Zup! 5}                                                => {Zup!}                                                  0.001314880  0.5713154 0.002301496 100.34417   721
## [82]  {Zup!}                                                  => {Zup! 5}                                                0.001314880  0.2309417 0.005693558 100.34417   721
## [83]  {Zup! Zero}                                             => {Zup!}                                                  0.001168985  0.5647577 0.002069887  99.19240   641
## [84]  {Zup!}                                                  => {Zup! Zero}                                             0.001168985  0.2053171 0.005693558  99.19240   641
## [85]  {Zup! 6}                                                => {Zup!}                                                  0.001019442  0.5507389 0.001851045  96.73018   559
## [86]  {Zup!}                                                  => {Zup! 6}                                                0.001019442  0.1790519 0.005693558  96.73018   559
## [87]  {Library Of Ruina}                                      => {Lobotomy Corporation | Monster Management Simulation}  0.001258346  0.4161641 0.003023677  95.04331   690
## [88]  {Lobotomy Corporation | Monster Management Simulation}  => {Library Of Ruina}                                      0.001258346  0.2873803 0.004378678  95.04331   690
## [89]  {NEKOPARA Extra}                                        => {NEKOPARA Vol. 3}                                       0.001380533  0.5493469 0.002513044  93.84060   757
## [90]  {NEKOPARA Vol. 3}                                       => {NEKOPARA Extra}                                        0.001380533  0.2358255 0.005854043  93.84060   757
## [91]  {Batman: The Enemy Within - The Telltale Series}        => {Batman - The Telltale Series}                          0.002181132  0.5594013 0.003899048  92.50348  1196
## [92]  {Batman - The Telltale Series}                          => {Batman: The Enemy Within - The Telltale Series}        0.002181132  0.3606755 0.006047354  92.50348  1196
## [93]  {The Room Three}                                        => {The Room Two}                                          0.002286906  0.5765517 0.003966524  91.29246  1254
## [94]  {The Room Two}                                          => {The Room Three}                                        0.002286906  0.3621138 0.006315436  91.29246  1254
## [95]  {Zup! 2}                                                => {Zup!}                                                  0.002538576  0.5167038 0.004913019  90.75235  1392
## [96]  {Zup!}                                                  => {Zup! 2}                                                0.002538576  0.4458680 0.005693558  90.75235  1392
## [97]  {Max Payne 2: The Fall of Max Payne}                    => {Max Payne}                                             0.002923374  0.6230082 0.004692353  90.25619  1603
## [98]  {Max Payne}                                             => {Max Payne 2: The Fall of Max Payne}                    0.002923374  0.4235139 0.006902664  90.25619  1603
## [99]  {Gothic 1}                                              => {Gothic® 3}                                             0.001041327  0.2501095 0.004163483  90.16752   571
## [100] {Gothic® 3}                                             => {Gothic 1}                                              0.001041327  0.3754109 0.002773832  90.16752   571

Almost all of the listed rules are related to each other by being in the same series of games. It’s an interesting pattern and it’s probably related to the fact, that many games in the same series are sold together, especially on some sales. Players could have similar opinions about them and they give positive recommendations to them for all games of the series.

plot(associationRules)

plot(associationRules, measure=c("support","lift"), shading="confidence")

Pairs with high lift have low support with high confidence. Because of the nature of recommendations, support could not be a good predictor for us to use. Relations between popular games could have big support because many people play them, but this could not be related to being interested in playing similar games to them.

Games Recommendations

Because we have such a big number of rules, let us filter those that are below 1 in the lift statistic(to have only pairs positively dependent on one another)

associationRules <- subset(associationRules, lift > 1)

summary(associationRules)
## set of 45512 rules
## 
## rule length distribution (lhs + rhs):sizes
##     1     2 
##    10 45502 
## 
##    Min. 1st Qu.  Median    Mean 3rd Qu.    Max. 
##       1       2       2       2       2       2 
## 
## summary of quality measures:
##     support           confidence         coverage             lift        
##  Min.   :0.001001   Min.   :0.01013   Min.   :0.001492   Min.   :  1.000  
##  1st Qu.:0.001185   1st Qu.:0.04023   1st Qu.:0.018642   1st Qu.:  1.529  
##  Median :0.001475   Median :0.06083   Median :0.027425   Median :  2.045  
##  Mean   :0.001852   Mean   :0.07566   Mean   :0.032218   Mean   :  3.253  
##  3rd Qu.:0.002077   3rd Qu.:0.09256   3rd Qu.:0.040103   3rd Qu.:  2.983  
##  Max.   :0.048258   Max.   :0.79682   Max.   :1.000000   Max.   :345.531  
##      count      
##  Min.   :  549  
##  1st Qu.:  650  
##  Median :  809  
##  Mean   : 1016  
##  3rd Qu.: 1139  
##  Max.   :26462  
## 
## mining info:
##     data ntransactions support confidence
##  matrix2        548339   0.001       0.01
##                                                 call
##  apriori(data = matrix2, parameter = ruleParameters)

Let’s search for games relations with each other, which are not in the same series. To make it, we must transform data from the apriori algorithm and add information about the release date on Steam, publisher, developer, and name.

associationRules <- as(associationRules, "data.frame")
rules <- sapply(associationRules$rules, function(x){
    x = gsub("[\\{\\}]", "", regmatches(x, gregexpr("\\{.*\\}", x))[[1]])
    x = gsub("=>",",",x)
    x = str_replace_all(x," ","")
    return( x )
})

rules <- as.character(rules)
rules <- str_split(rules, ",")

associationRules$gameLeftSide <- sapply( rules, "[[", 1)
associationRules$gameRightSide <- sapply( rules, "[[", 2)

associationRules$gameLeftSide <- as.numeric(associationRules$gameLeftSide)
associationRules$gameRightSide <- as.numeric(associationRules$gameRightSide)
associationRules$rules <- NULL

associationRules <- associationRules %>% left_join(dane2, by = c("gameLeftSide" = "app_id"))

associationRules$gameLeftSide <- NULL
columnNames <- colnames(associationRules)

columnNames[7:10] <- str_c("Left_", columnNames[7:10])

colnames(associationRules) <- columnNames


associationRules <- associationRules %>% left_join(dane2, by = c("gameRightSide" = "app_id"))

associationRules$gameRightSide <- NULL
columnNames <- colnames(associationRules)
columnNames[10:13] <- str_c("Right_", columnNames[10:13])
colnames(associationRules) <- columnNames
colnames(associationRules)[colnames(associationRules) == "Left_Release date"] <- "Left_year"
colnames(associationRules)[colnames(associationRules) == "Right_Release date"] <- "Right_year"
colnames(associationRules)
##  [1] "support"          "confidence"       "coverage"         "lift"            
##  [5] "count"            "Left_Name"        "Left_year"        "Left_Developers" 
##  [9] "Left_Publishers"  "Right_Name"       "Right_year"       "Right_Developers"
## [13] "Right_Publishers"

I delete observations with the same publisher and developer to search for other relations between games.

associationRules <- arrange(associationRules, desc(lift))
associationRules <- select(associationRules, Left_Name, Left_year, Right_Name, Right_year, support, confidence, lift, Left_Developers, Right_Developers, Right_Publishers, Left_Publishers)

associationRules <- associationRules[associationRules$Left_Developers != associationRules$Right_Developers, ]
associationRules <- associationRules[associationRules$Left_Publishers != associationRules$Right_Publishers, ]
associationRules2 <- select(associationRules, Left_Name, Left_year, Right_Name, Right_year, support, confidence, lift)
head(associationRules2, 150)
##                                                        Left_Name Left_year
## 47                             Hyperdimension Neptunia Re;Birth1      2015
## 48         Hyperdimension Neptunia Re;Birth2: Sisters Generation      2015
## 175                                                   F.E.A.R. 3      2011
## 176                                   F.E.A.R. 2: Project Origin      2009
## 181                       Total War: EMPIRE – Definitive Edition      2009
## 182                     Total War: NAPOLEON – Definitive Edition      2010
## 197 STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™      2012
## 198                    STAR WARS™ - Knights of the Old Republic™      2009
## 259                                              Resident Evil 0      2016
## 260                                    Resident Evil Revelations      2013
## 263                                    Resident Evil Revelations      2013
## 264                                  Resident Evil Revelations 2      2015
## 279                                         Farming Simulator 17      2016
## 280                                         Farming Simulator 19      2018
## 307                                                     F.E.A.R.      2010
## 308                                                   F.E.A.R. 3      2011
## 309                                            Life is Strange 2      2018
## 310                                 Life is Strange: True Colors      2021
## 321                                                      DOOM 64      2020
## 322                                                Ultimate Doom      2007
## 323                                              Project Wingman      2020
## 324                                 ACE COMBAT™ 7: SKIES UNKNOWN      2019
## 333                                                SCARLET NEXUS      2021
## 334                                               Tales of Arise      2021
## 337                                         Blood: Fresh Supply™      2019
## 338                                                         DUSK      2018
## 365                                                     Ion Fury      2019
## 366                                                         DUSK      2018
## 369                             Pillars of Eternity II: Deadfire      2018
## 370                Pathfinder: Kingmaker - Enhanced Plus Edition      2018
## 373                                                Resident Evil      2015
## 374                                    Resident Evil Revelations      2013
## 383                                 Stormworks: Build and Rescue      2020
## 384                                                   Brick Rigs      2016
## 391                           Pathfinder: Wrath of the Righteous      2021
## 392                             Pillars of Eternity II: Deadfire      2018
## 401                  Total War: MEDIEVAL II – Definitive Edition      2006
## 402                                            Total War: ATTILA      2015
## 409                     Total War: NAPOLEON – Definitive Edition      2010
## 410                        Total War™: ROME II - Emperor Edition      2013
## 415                        Total War™: ROME II - Emperor Edition      2013
## 416                       Total War: EMPIRE – Definitive Edition      2009
## 449                     Automation - The Car Company Tycoon Game      2015
## 450                                                 BeamNG.drive      2015
## 451                                     Total War: WARHAMMER III      2022
## 452                                      Total War: WARHAMMER II      2017
## 459                                                Ultimate Doom      2007
## 460                                                        QUAKE      2007
## 467                                              Resident Evil 0      2016
## 468                                              Resident Evil 5      2009
## 473                              Devil May Cry 4 Special Edition      2015
## 474                                           DmC: Devil May Cry      2013
## 487                                                 Injustice™ 2      2017
## 488                    Injustice: Gods Among Us Ultimate Edition      2013
## 491                           The Walking Dead: Saints & Sinners      2020
## 492                                                    BONEWORKS      2019
## 503                                Mafia III: Definitive Edition      2020
## 504                                 Mafia II: Definitive Edition      2020
## 505                  Total War: MEDIEVAL II – Definitive Edition      2006
## 506                        Total War™: ROME II - Emperor Edition      2013
## 507           The Walking Dead: Michonne - A Telltale Miniseries      2016
## 508                                            The Wolf Among Us      2013
## 525                                         Total War: WARHAMMER      2016
## 526                                     Total War: WARHAMMER III      2022
## 527                                                        QUAKE      2007
## 528                                                         DUSK      2018
## 551                                         Total War: WARHAMMER      2016
## 552                                      Total War: WARHAMMER II      2017
## 553                                                      BONELAB      2022
## 554                                            Blade and Sorcery      2018
## 557                   Deus Ex: Human Revolution - Director's Cut      2013
## 558                                     Deus Ex: Mankind Divided      2016
## 559                           The Walking Dead: Saints & Sinners      2020
## 560                                                    Pavlov VR      2017
## 561                           Pathfinder: Wrath of the Righteous      2021
## 562                                              Baldur's Gate 3      2020
## 563                                         XCOM®: Chimera Squad      2020
## 564                                                      XCOM® 2      2016
## 567                                           Tales of Berseria™      2017
## 568                                               Tales of Arise      2021
## 569                                              Resident Evil 0      2016
## 570                                              Resident Evil 6      2013
## 581                                              Resident Evil 0      2016
## 582                                              Resident Evil 4      2014
## 585                                            Blade and Sorcery      2018
## 586                                                    BONEWORKS      2019
## 591                                                         GORN      2019
## 592                                                    Pavlov VR      2017
## 595                                            Total War: ATTILA      2015
## 596                                         Total War: WARHAMMER      2016
## 601                           The Walking Dead: Saints & Sinners      2020
## 602                                            Blade and Sorcery      2018
## 603                                                  Gorilla Tag      2021
## 604                                                    Pavlov VR      2017
## 621                                            The Wolf Among Us      2013
## 622                                 The Walking Dead: Season Two      2013
## 623                        Total War™: ROME II - Emperor Edition      2013
## 624                                          Total War: SHOGUN 2      2011
## 629                                               DiRT Rally 2.0      2019
## 630                                                Assetto Corsa      2014
## 631                                            Company of Heroes      2006
## 632                                          Company of Heroes 2      2013
## 633                                  Resident Evil Revelations 2      2015
## 634                                              Resident Evil 6      2013
## 641                             Assassin's Creed® III Remastered      2019
## 642                                    Assassin's Creed® Odyssey      2018
## 643                         Hot Dogs, Horseshoes & Hand Grenades      2016
## 644                                                    BONEWORKS      2019
## 647                                                Resident Evil      2015
## 648                                              Resident Evil 5      2009
## 649                                                Resident Evil      2015
## 650                                              Resident Evil 4      2014
## 655                                                         GORN      2019
## 656                                            Blade and Sorcery      2018
## 657                     Star Wars: Battlefront 2 (Classic, 2005)      2009
## 658                                STAR WARS™ Republic Commando™      2009
## 665                                                    Pavlov VR      2017
## 666                                            Blade and Sorcery      2018
## 675                                                      BONELAB      2022
## 676                                                    Pavlov VR      2017
## 677                                                 Ready or Not      2021
## 678                                                GROUND BRANCH      2018
## 681                         Hot Dogs, Horseshoes & Hand Grenades      2016
## 682                                                    Pavlov VR      2017
## 693                                                    Pavlov VR      2017
## 694                                                    BONEWORKS      2019
## 697                                                Post Scriptum      2018
## 698                                               Hell Let Loose      2021
## 701                                                    Bayonetta      2017
## 702                              Devil May Cry 4 Special Edition      2015
## 705                                    Resident Evil Revelations      2013
## 706                                              The Evil Within      2014
## 707                                  Resident Evil Revelations 2      2015
## 708                                              Resident Evil 5      2009
## 709                                                   Last Epoch      2019
## 710                                                    Grim Dawn      2016
## 715                                     CarX Drift Racing Online      2017
## 716                                                Assetto Corsa      2014
## 725                        Borderlands Game of the Year Enhanced      2019
## 726                                  Borderlands: The Pre-Sequel      2014
## 731                         Hot Dogs, Horseshoes & Hand Grenades      2016
## 732                                            Blade and Sorcery      2018
## 737                                   Tales from the Borderlands      2021
## 738                                            The Wolf Among Us      2013
## 739                                                  Gorilla Tag      2021
## 740                                                    BONEWORKS      2019
## 751                                                   Beat Saber      2019
## 752                                                  SUPERHOT VR      2017
## 763                                                Day of Infamy      2017
## 764                                                       Verdun      2015
##                                                       Right_Name Right_year
## 47         Hyperdimension Neptunia Re;Birth2: Sisters Generation       2015
## 48                             Hyperdimension Neptunia Re;Birth1       2015
## 175                                   F.E.A.R. 2: Project Origin       2009
## 176                                                   F.E.A.R. 3       2011
## 181                     Total War: NAPOLEON – Definitive Edition       2010
## 182                       Total War: EMPIRE – Definitive Edition       2009
## 197                    STAR WARS™ - Knights of the Old Republic™       2009
## 198 STAR WARS™ Knights of the Old Republic™ II - The Sith Lords™       2012
## 259                                    Resident Evil Revelations       2013
## 260                                              Resident Evil 0       2016
## 263                                  Resident Evil Revelations 2       2015
## 264                                    Resident Evil Revelations       2013
## 279                                         Farming Simulator 19       2018
## 280                                         Farming Simulator 17       2016
## 307                                                   F.E.A.R. 3       2011
## 308                                                     F.E.A.R.       2010
## 309                                 Life is Strange: True Colors       2021
## 310                                            Life is Strange 2       2018
## 321                                                Ultimate Doom       2007
## 322                                                      DOOM 64       2020
## 323                                 ACE COMBAT™ 7: SKIES UNKNOWN       2019
## 324                                              Project Wingman       2020
## 333                                               Tales of Arise       2021
## 334                                                SCARLET NEXUS       2021
## 337                                                         DUSK       2018
## 338                                         Blood: Fresh Supply™       2019
## 365                                                         DUSK       2018
## 366                                                     Ion Fury       2019
## 369                Pathfinder: Kingmaker - Enhanced Plus Edition       2018
## 370                             Pillars of Eternity II: Deadfire       2018
## 373                                    Resident Evil Revelations       2013
## 374                                                Resident Evil       2015
## 383                                                   Brick Rigs       2016
## 384                                 Stormworks: Build and Rescue       2020
## 391                             Pillars of Eternity II: Deadfire       2018
## 392                           Pathfinder: Wrath of the Righteous       2021
## 401                                            Total War: ATTILA       2015
## 402                  Total War: MEDIEVAL II – Definitive Edition       2006
## 409                        Total War™: ROME II - Emperor Edition       2013
## 410                     Total War: NAPOLEON – Definitive Edition       2010
## 415                       Total War: EMPIRE – Definitive Edition       2009
## 416                        Total War™: ROME II - Emperor Edition       2013
## 449                                                 BeamNG.drive       2015
## 450                     Automation - The Car Company Tycoon Game       2015
## 451                                      Total War: WARHAMMER II       2017
## 452                                     Total War: WARHAMMER III       2022
## 459                                                        QUAKE       2007
## 460                                                Ultimate Doom       2007
## 467                                              Resident Evil 5       2009
## 468                                              Resident Evil 0       2016
## 473                                           DmC: Devil May Cry       2013
## 474                              Devil May Cry 4 Special Edition       2015
## 487                    Injustice: Gods Among Us Ultimate Edition       2013
## 488                                                 Injustice™ 2       2017
## 491                                                    BONEWORKS       2019
## 492                           The Walking Dead: Saints & Sinners       2020
## 503                                 Mafia II: Definitive Edition       2020
## 504                                Mafia III: Definitive Edition       2020
## 505                        Total War™: ROME II - Emperor Edition       2013
## 506                  Total War: MEDIEVAL II – Definitive Edition       2006
## 507                                            The Wolf Among Us       2013
## 508           The Walking Dead: Michonne - A Telltale Miniseries       2016
## 525                                     Total War: WARHAMMER III       2022
## 526                                         Total War: WARHAMMER       2016
## 527                                                         DUSK       2018
## 528                                                        QUAKE       2007
## 551                                      Total War: WARHAMMER II       2017
## 552                                         Total War: WARHAMMER       2016
## 553                                            Blade and Sorcery       2018
## 554                                                      BONELAB       2022
## 557                                     Deus Ex: Mankind Divided       2016
## 558                   Deus Ex: Human Revolution - Director's Cut       2013
## 559                                                    Pavlov VR       2017
## 560                           The Walking Dead: Saints & Sinners       2020
## 561                                              Baldur's Gate 3       2020
## 562                           Pathfinder: Wrath of the Righteous       2021
## 563                                                      XCOM® 2       2016
## 564                                         XCOM®: Chimera Squad       2020
## 567                                               Tales of Arise       2021
## 568                                           Tales of Berseria™       2017
## 569                                              Resident Evil 6       2013
## 570                                              Resident Evil 0       2016
## 581                                              Resident Evil 4       2014
## 582                                              Resident Evil 0       2016
## 585                                                    BONEWORKS       2019
## 586                                            Blade and Sorcery       2018
## 591                                                    Pavlov VR       2017
## 592                                                         GORN       2019
## 595                                         Total War: WARHAMMER       2016
## 596                                            Total War: ATTILA       2015
## 601                                            Blade and Sorcery       2018
## 602                           The Walking Dead: Saints & Sinners       2020
## 603                                                    Pavlov VR       2017
## 604                                                  Gorilla Tag       2021
## 621                                 The Walking Dead: Season Two       2013
## 622                                            The Wolf Among Us       2013
## 623                                          Total War: SHOGUN 2       2011
## 624                        Total War™: ROME II - Emperor Edition       2013
## 629                                                Assetto Corsa       2014
## 630                                               DiRT Rally 2.0       2019
## 631                                          Company of Heroes 2       2013
## 632                                            Company of Heroes       2006
## 633                                              Resident Evil 6       2013
## 634                                  Resident Evil Revelations 2       2015
## 641                                    Assassin's Creed® Odyssey       2018
## 642                             Assassin's Creed® III Remastered       2019
## 643                                                    BONEWORKS       2019
## 644                         Hot Dogs, Horseshoes & Hand Grenades       2016
## 647                                              Resident Evil 5       2009
## 648                                                Resident Evil       2015
## 649                                              Resident Evil 4       2014
## 650                                                Resident Evil       2015
## 655                                            Blade and Sorcery       2018
## 656                                                         GORN       2019
## 657                                STAR WARS™ Republic Commando™       2009
## 658                     Star Wars: Battlefront 2 (Classic, 2005)       2009
## 665                                            Blade and Sorcery       2018
## 666                                                    Pavlov VR       2017
## 675                                                    Pavlov VR       2017
## 676                                                      BONELAB       2022
## 677                                                GROUND BRANCH       2018
## 678                                                 Ready or Not       2021
## 681                                                    Pavlov VR       2017
## 682                         Hot Dogs, Horseshoes & Hand Grenades       2016
## 693                                                    BONEWORKS       2019
## 694                                                    Pavlov VR       2017
## 697                                               Hell Let Loose       2021
## 698                                                Post Scriptum       2018
## 701                              Devil May Cry 4 Special Edition       2015
## 702                                                    Bayonetta       2017
## 705                                              The Evil Within       2014
## 706                                    Resident Evil Revelations       2013
## 707                                              Resident Evil 5       2009
## 708                                  Resident Evil Revelations 2       2015
## 709                                                    Grim Dawn       2016
## 710                                                   Last Epoch       2019
## 715                                                Assetto Corsa       2014
## 716                                     CarX Drift Racing Online       2017
## 725                                  Borderlands: The Pre-Sequel       2014
## 726                        Borderlands Game of the Year Enhanced       2019
## 731                                            Blade and Sorcery       2018
## 732                         Hot Dogs, Horseshoes & Hand Grenades       2016
## 737                                            The Wolf Among Us       2013
## 738                                   Tales from the Borderlands       2021
## 739                                                    BONEWORKS       2019
## 740                                                  Gorilla Tag       2021
## 751                                                  SUPERHOT VR       2017
## 752                                                   Beat Saber       2019
## 763                                                       Verdun       2015
## 764                                                Day of Infamy       2017
##         support confidence      lift
## 47  0.001322175 0.25156142 136.57518
## 48  0.001322175 0.71782178 136.57518
## 175 0.001128864 0.23734663  55.45224
## 176 0.001128864 0.26374095  55.45224
## 181 0.001356825 0.23754789  54.16082
## 182 0.001356825 0.30935551  54.16082
## 197 0.002181132 0.38692980  51.37257
## 198 0.002181132 0.28958838  51.37257
## 259 0.001223696 0.23494398  39.32508
## 260 0.001223696 0.20482295  39.32508
## 263 0.002199369 0.36813187  38.84184
## 264 0.002199369 0.23205696  38.84184
## 279 0.001030384 0.27467185  36.75288
## 280 0.001030384 0.13787213  36.75288
## 307 0.001220048 0.15726375  33.06513
## 308 0.001220048 0.25651840  33.06513
## 309 0.001143453 0.12036859  32.96843
## 310 0.001143453 0.31318681  32.96843
## 321 0.001048621 0.26546630  32.08409
## 322 0.001048621 0.12673573  32.08409
## 323 0.001586610 0.36159601  32.00600
## 324 0.001586610 0.14043584  32.00600
## 333 0.001196340 0.27287854  31.52759
## 334 0.001196340 0.13822166  31.52759
## 337 0.001116098 0.33849558  31.20550
## 338 0.001116098 0.10289173  31.20550
## 365 0.001123393 0.31589744  29.12221
## 366 0.001123393 0.10356422  29.12221
## 369 0.001046798 0.17047817  28.99498
## 370 0.001046798 0.17803970  28.99498
## 373 0.001572020 0.17233107  28.84489
## 374 0.001572020 0.26312576  28.84489
## 383 0.001075977 0.17701770  28.25785
## 384 0.001075977 0.17176128  28.25785
## 391 0.001094214 0.16727070  27.24118
## 392 0.001094214 0.17820018  27.24118
## 401 0.001092390 0.17084997  26.27137
## 402 0.001092390 0.16797532  26.27137
## 409 0.001168985 0.26652807  25.68953
## 410 0.001168985 0.11267358  25.68953
## 415 0.001484483 0.14308314  25.05047
## 416 0.001484483 0.25989783  25.05047
## 449 0.001325822 0.60532889  23.18077
## 450 0.001325822 0.05077170  23.18077
## 451 0.004116067 0.44367997  23.17240
## 452 0.004116067 0.21497285  23.17240
## 459 0.001323998 0.16001763  22.71981
## 460 0.001323998 0.18798550  22.71981
## 467 0.001789039 0.34348739  22.26593
## 468 0.001789039 0.11597115  22.26593
## 473 0.001533723 0.26012991  21.84370
## 474 0.001533723 0.12879020  21.84370
## 487 0.001010324 0.16571941  21.40142
## 488 0.001010324 0.13047574  21.40142
## 491 0.001482659 0.35736264  21.30418
## 492 0.001482659 0.08838878  21.30418
## 503 0.001400593 0.12979550  21.05679
## 504 0.001400593 0.22721893  21.05679
## 505 0.001395122 0.21819738  21.03114
## 506 0.001395122 0.13447003  21.03114
## 507 0.001037679 0.27988195  21.00892
## 508 0.001037679 0.07789185  21.00892
## 525 0.001798158 0.18987098  20.46661
## 526 0.001798158 0.19382740  20.46661
## 527 0.001559254 0.22138788  20.40948
## 528 0.001559254 0.14374580  20.40948
## 551 0.003508778 0.37049875  19.35031
## 552 0.003508778 0.18325555  19.35031
## 553 0.001364120 0.31455004  19.33199
## 554 0.001364120 0.08383770  19.33199
## 557 0.003244343 0.25861317  19.29356
## 558 0.003244343 0.24204082  19.29356
## 559 0.001123393 0.27076923  19.19252
## 560 0.001123393 0.07962771  19.19252
## 561 0.001367767 0.20908837  19.14365
## 562 0.001367767 0.12522959  19.14365
## 563 0.001856516 0.38531416  19.14313
## 564 0.001856516 0.09223521  19.14313
## 567 0.001068682 0.16497748  19.06102
## 568 0.001068682 0.12347240  19.06102
## 569 0.001590257 0.30532213  18.96896
## 570 0.001590257 0.09879900  18.96896
## 581 0.002257727 0.43347339  18.66287
## 582 0.002257727 0.09720477  18.66287
## 585 0.005082622 0.31237391  18.62218
## 586 0.005082622 0.30300065  18.62218
## 591 0.001034032 0.26080957  18.48656
## 592 0.001034032 0.07329369  18.48656
## 595 0.001130687 0.17386427  18.35867
## 596 0.001130687 0.11939149  18.35867
## 601 0.001220048 0.29406593  18.07306
## 602 0.001220048 0.07498319  18.07306
## 603 0.001316704 0.25476359  18.05802
## 604 0.001316704 0.09332989  18.05802
## 621 0.003078388 0.23107461  17.21332
## 622 0.003078388 0.22931667  17.21332
## 623 0.001491778 0.14378625  17.18475
## 624 0.001491778 0.17829119  17.18475
## 629 0.001623084 0.19782174  17.05020
## 630 0.001623084 0.13989312  17.05020
## 631 0.001331293 0.29979466  17.03338
## 632 0.001331293 0.07563983  17.03338
## 633 0.002595110 0.27381181  17.01130
## 634 0.002595110 0.16122819  17.01130
## 641 0.001187222 0.49468085  16.91841
## 642 0.001187222 0.04060375  16.91841
## 643 0.002471099 0.28264497  16.84989
## 644 0.002471099 0.14731463  16.84989
## 647 0.002363501 0.25909636  16.79544
## 648 0.002363501 0.15320960  16.79544
## 649 0.003558018 0.39004398  16.79305
## 650 0.003558018 0.15318781  16.79305
## 655 0.001075977 0.27138914  16.67936
## 656 0.001075977 0.06612867  16.67936
## 657 0.001568373 0.09193928  16.66575
## 658 0.001568373 0.28429752  16.66575
## 665 0.003806040 0.26977766  16.58032
## 666 0.003806040 0.23391616  16.58032
## 675 0.001004853 0.23170732  16.42375
## 676 0.001004853 0.07122544  16.42375
## 677 0.001433420 0.06465943  16.39172
## 678 0.001433420 0.36338419  16.39172
## 681 0.002018824 0.23091364  16.36750
## 682 0.002018824 0.14309721  16.36750
## 693 0.003849808 0.27288004  16.26775
## 694 0.003849808 0.22950641  16.26775
## 697 0.001168985 0.29403670  16.16683
## 698 0.001168985 0.06427354  16.16683
## 701 0.001119745 0.09375477  15.90145
## 702 0.001119745 0.18991649  15.90145
## 705 0.001105156 0.18498168  15.88111
## 706 0.001105156 0.09488023  15.88111
## 707 0.002314262 0.24417933  15.82847
## 708 0.002314262 0.15001773  15.82847
## 709 0.001035856 0.34676435  15.82164
## 710 0.001035856 0.04726244  15.82164
## 715 0.001442538 0.18234209  15.71601
## 716 0.001442538 0.12433197  15.71601
## 725 0.001608494 0.23532551  15.46849
## 726 0.001608494 0.10573004  15.46849
## 731 0.002188427 0.25031289  15.38403
## 732 0.002188427 0.13449899  15.38403
## 737 0.001612141 0.20349908  15.27536
## 738 0.001612141 0.12101300  15.27536
## 739 0.001322175 0.25582216  15.25084
## 740 0.001322175 0.07882148  15.25084
## 751 0.001721563 0.06486635  14.83886
## 752 0.001721563 0.39382562  14.83886
## 763 0.001112451 0.13794663  14.61672
## 764 0.001112451 0.11787440  14.61672

Although cases of games from the same series still occur frequently, connections between games that are not from the same series can be seen, especially in the later positions.

Let’s try with a release date on Steam. Before 2005, only a few popular games had internet release on Steam, mostly from Valve Studio, which is related to Steam by the same owner. Because of that, for some games, especially older games, the release date is not the same as the premiere date.

associationRules %>% 
    filter(Left_year < 2005 & Right_year > 2020) %>%
    arrange(desc(lift)) %>% 
    head(25)
##                 Left_Name Left_year                        Right_Name
## 1  Counter-Strike: Source      2004      Borderlands Game of the Year
## 2             Half-Life 2      2004      Borderlands Game of the Year
## 3               Half-Life      1998      Borderlands Game of the Year
## 4             Half-Life 2      2004                Paint the Town Red
## 5             Half-Life 2      2004 The Stanley Parable: Ultra Deluxe
## 6             Half-Life 2      2004                          Teardown
## 7               Half-Life      1998                          Teardown
## 8             Half-Life 2      2004                          Rec Room
## 9  Counter-Strike: Source      2004                         Crab Game
## 10              Half-Life      1998                              Muck
## 11              Half-Life      1998                         Crab Game
## 12            Half-Life 2      2004 Totally Accurate Battle Simulator
## 13            Half-Life 2      2004                              Muck
## 14 Counter-Strike: Source      2004                              Muck
## 15            Half-Life 2      2004                         Crab Game
## 16            Half-Life 2      2004                     Halo Infinite
## 17 Counter-Strike: Source      2004                          Teardown
## 18 Counter-Strike: Source      2004                   Forza Horizon 4
## 19              Half-Life      1998                     Halo Infinite
## 20              Half-Life      1998                    Cookie Clicker
## 21            Half-Life 2      2004                    Cookie Clicker
## 22 Counter-Strike: Source      2004 Call of Duty®: Modern Warfare® II
## 23 Counter-Strike: Source      2004                     Halo Infinite
## 24            Half-Life 2      2004            Subnautica: Below Zero
## 25            Half-Life 2      2004             Resident Evil Village
##    Right_year     support confidence     lift Left_Developers
## 1        2023 0.001391475 0.03393675 2.556160           Valve
## 2        2023 0.002002411 0.03243626 2.443141           Valve
## 3        2023 0.001230990 0.03112464 2.344348           Valve
## 4        2021 0.001145277 0.01855189 2.182052           Valve
## 5        2022 0.001267464 0.02053115 2.168342           Valve
## 6        2022 0.002483865 0.04023515 2.101391           Valve
## 7        2022 0.001590257 0.04020842 2.099995           Valve
## 8        2021 0.001054092 0.01707483 2.056401           Valve
## 9        2021 0.002525810 0.06160210 2.032176           Valve
## 10       2021 0.001263817 0.03195463 2.000453           Valve
## 11       2021 0.002290554 0.05791488 1.910539           Valve
## 12       2021 0.001572020 0.02546454 1.886409           Valve
## 13       2021 0.001829160 0.02962985 1.854915           Valve
## 14       2021 0.001179927 0.02877730 1.801543           Valve
## 15       2021 0.003308172 0.05358778 1.767794           Valve
## 16       2021 0.002589639 0.04194854 1.527561           Valve
## 17       2022 0.001192693 0.02908864 1.519234           Valve
## 18       2021 0.001688736 0.04118667 1.511968           Valve
## 19       2021 0.001617612 0.04090008 1.489382           Valve
## 20       2021 0.001037679 0.02623692 1.464745           Valve
## 21       2021 0.001508191 0.02443059 1.363902           Valve
## 22       2022 0.001276583 0.03113464 1.330865           Valve
## 23       2021 0.001491778 0.03638304 1.324893           Valve
## 24       2021 0.001260169 0.02041299 1.280984           Valve
## 25       2021 0.002097243 0.03397241 1.172113           Valve
##                                                                                                                Right_Developers
## 1                                                                                                              Gearbox Software
## 2                                                                                                              Gearbox Software
## 3                                                                                                              Gearbox Software
## 4                                                                                                              South East Games
## 5                                                                                                             Crows Crows Crows
## 6                                                                                                                   Tuxedo Labs
## 7                                                                                                                   Tuxedo Labs
## 8                                                                                                                      Rec Room
## 9                                                                                                                          Dani
## 10                                                                                                                         Dani
## 11                                                                                                                         Dani
## 12                                                                                                                     Landfall
## 13                                                                                                                         Dani
## 14                                                                                                                         Dani
## 15                                                                                                                         Dani
## 16                                                                                                               343 Industries
## 17                                                                                                                  Tuxedo Labs
## 18                                                                                                             Playground Games
## 19                                                                                                               343 Industries
## 20                                                                                                               Orteil,DashNet
## 21                                                                                                               Orteil,DashNet
## 22 Infinity Ward,Raven Software,Beenox,Treyarch,High Moon Studios,Sledgehammer Games,Activision Shanghai,Demonware,Toys for Bob
## 23                                                                                                               343 Industries
## 24                                                                                                 Unknown Worlds Entertainment
## 25                                                                                                             CAPCOM Co., Ltd.
##                Right_Publishers Left_Publishers
## 1                            2K           Valve
## 2                            2K           Valve
## 3                            2K           Valve
## 4              South East Games           Valve
## 5             Crows Crows Crows           Valve
## 6                   Tuxedo Labs           Valve
## 7                   Tuxedo Labs           Valve
## 8                      Rec Room           Valve
## 9                          Dani           Valve
## 10                         Dani           Valve
## 11                         Dani           Valve
## 12                     Landfall           Valve
## 13                         Dani           Valve
## 14                         Dani           Valve
## 15                         Dani           Valve
## 16            Xbox Game Studios           Valve
## 17                  Tuxedo Labs           Valve
## 18            Xbox Game Studios           Valve
## 19            Xbox Game Studios           Valve
## 20                   Playsaurus           Valve
## 21                   Playsaurus           Valve
## 22                   Activision           Valve
## 23            Xbox Game Studios           Valve
## 24 Unknown Worlds Entertainment           Valve
## 25             CAPCOM Co., Ltd.           Valve
associationRules %>% 
    filter(Left_year > 2020 & Right_year < 2005) %>%
    arrange(desc(lift)) %>% 
    head(25)
##                            Left_Name Left_year             Right_Name
## 1       Borderlands Game of the Year      2023 Counter-Strike: Source
## 2       Borderlands Game of the Year      2023            Half-Life 2
## 3       Borderlands Game of the Year      2023              Half-Life
## 4                 Paint the Town Red      2021            Half-Life 2
## 5  The Stanley Parable: Ultra Deluxe      2022            Half-Life 2
## 6                           Teardown      2022            Half-Life 2
## 7                           Teardown      2022              Half-Life
## 8                           Rec Room      2021            Half-Life 2
## 9                          Crab Game      2021 Counter-Strike: Source
## 10                              Muck      2021              Half-Life
## 11                         Crab Game      2021              Half-Life
## 12 Totally Accurate Battle Simulator      2021            Half-Life 2
## 13                              Muck      2021            Half-Life 2
## 14                              Muck      2021 Counter-Strike: Source
## 15                         Crab Game      2021            Half-Life 2
## 16                     Halo Infinite      2021            Half-Life 2
## 17                          Teardown      2022 Counter-Strike: Source
## 18                   Forza Horizon 4      2021 Counter-Strike: Source
## 19                     Halo Infinite      2021              Half-Life
## 20                    Cookie Clicker      2021              Half-Life
## 21                    Cookie Clicker      2021            Half-Life 2
## 22 Call of Duty®: Modern Warfare® II      2022 Counter-Strike: Source
## 23                     Halo Infinite      2021 Counter-Strike: Source
## 24            Subnautica: Below Zero      2021            Half-Life 2
## 25             Resident Evil Village      2021            Half-Life 2
##    Right_year     support confidence     lift
## 1        2004 0.001391475 0.10480769 2.556160
## 2        2004 0.002002411 0.15082418 2.443141
## 3        1998 0.001230990 0.09271978 2.344348
## 4        2004 0.001145277 0.13470613 2.182052
## 5        2004 0.001267464 0.13385978 2.168342
## 6        2004 0.002483865 0.12972664 2.101391
## 7        1998 0.001590257 0.08305553 2.099995
## 8        2004 0.001054092 0.12694926 2.056401
## 9        2004 0.002525810 0.08332331 2.032176
## 10       1998 0.001263817 0.07911862 2.000453
## 11       1998 0.002290554 0.07556251 1.910539
## 12       2004 0.001572020 0.11645501 1.886409
## 13       2004 0.001829160 0.11451079 1.854915
## 14       2004 0.001179927 0.07386688 1.801543
## 15       2004 0.003308172 0.10913248 1.767794
## 16       2004 0.002589639 0.09430203 1.527561
## 17       2004 0.001192693 0.06229165 1.519234
## 18       2004 0.001688736 0.06199371 1.511968
## 19       1998 0.001617612 0.05890557 1.489382
## 20       1998 0.001037679 0.05793117 1.464745
## 21       2004 0.001508191 0.08419874 1.363902
## 22       2004 0.001276583 0.05456813 1.330865
## 23       2004 0.001491778 0.05432328 1.324893
## 24       2004 0.001260169 0.07907988 1.280984
## 25       2004 0.002097243 0.07235890 1.172113
##                                                                                                                 Left_Developers
## 1                                                                                                              Gearbox Software
## 2                                                                                                              Gearbox Software
## 3                                                                                                              Gearbox Software
## 4                                                                                                              South East Games
## 5                                                                                                             Crows Crows Crows
## 6                                                                                                                   Tuxedo Labs
## 7                                                                                                                   Tuxedo Labs
## 8                                                                                                                      Rec Room
## 9                                                                                                                          Dani
## 10                                                                                                                         Dani
## 11                                                                                                                         Dani
## 12                                                                                                                     Landfall
## 13                                                                                                                         Dani
## 14                                                                                                                         Dani
## 15                                                                                                                         Dani
## 16                                                                                                               343 Industries
## 17                                                                                                                  Tuxedo Labs
## 18                                                                                                             Playground Games
## 19                                                                                                               343 Industries
## 20                                                                                                               Orteil,DashNet
## 21                                                                                                               Orteil,DashNet
## 22 Infinity Ward,Raven Software,Beenox,Treyarch,High Moon Studios,Sledgehammer Games,Activision Shanghai,Demonware,Toys for Bob
## 23                                                                                                               343 Industries
## 24                                                                                                 Unknown Worlds Entertainment
## 25                                                                                                             CAPCOM Co., Ltd.
##    Right_Developers Right_Publishers              Left_Publishers
## 1             Valve            Valve                           2K
## 2             Valve            Valve                           2K
## 3             Valve            Valve                           2K
## 4             Valve            Valve             South East Games
## 5             Valve            Valve            Crows Crows Crows
## 6             Valve            Valve                  Tuxedo Labs
## 7             Valve            Valve                  Tuxedo Labs
## 8             Valve            Valve                     Rec Room
## 9             Valve            Valve                         Dani
## 10            Valve            Valve                         Dani
## 11            Valve            Valve                         Dani
## 12            Valve            Valve                     Landfall
## 13            Valve            Valve                         Dani
## 14            Valve            Valve                         Dani
## 15            Valve            Valve                         Dani
## 16            Valve            Valve            Xbox Game Studios
## 17            Valve            Valve                  Tuxedo Labs
## 18            Valve            Valve            Xbox Game Studios
## 19            Valve            Valve            Xbox Game Studios
## 20            Valve            Valve                   Playsaurus
## 21            Valve            Valve                   Playsaurus
## 22            Valve            Valve                   Activision
## 23            Valve            Valve            Xbox Game Studios
## 24            Valve            Valve Unknown Worlds Entertainment
## 25            Valve            Valve             CAPCOM Co., Ltd.

Here, relationships can be seen between Valve games from 20 years ago and the latest games on Steam.

Let’s extend the criteria to 2010 to see that between 2005 and 2010, bestsellers from developers other than Valve started appearing on Steam.

associationRules %>% 
    filter(Left_year < 2010 & Right_year > 2020) %>%
    arrange(desc(lift)) %>% 
    head(25)
##                                       Left_Name Left_year
## 1          LEGO® Star Wars™ - The Complete Saga      2009
## 2           Fallout 3: Game of the Year Edition      2009
## 3                                 Killing Floor      2009
## 4                               Resident Evil 5      2009
## 5                                   Left 4 Dead      2008
## 6                                Mirror's Edge™      2009
## 7  The Witcher: Enhanced Edition Director's Cut      2008
## 8                      Half-Life 2: Episode Two      2007
## 9                                    Dead Space      2009
## 10                              Team Fortress 2      2007
## 11                              Team Fortress 2      2007
## 12                                       Portal      2007
## 13                              Team Fortress 2      2007
## 14                                       Portal      2007
## 15                                  Garry's Mod      2006
## 16                              Team Fortress 2      2007
## 17                                  Garry's Mod      2006
## 18                              Team Fortress 2      2007
## 19              Plants vs. Zombies GOTY Edition      2009
## 20                       Counter-Strike: Source      2004
## 21                              Team Fortress 2      2007
## 22                              Team Fortress 2      2007
## 23     Star Wars: Battlefront 2 (Classic, 2005)      2009
## 24                                  Half-Life 2      2004
## 25                              Team Fortress 2      2007
##                              Right_Name Right_year     support confidence
## 1  LEGO® Star Wars™: The Skywalker Saga       2022 0.001123393 0.13694976
## 2          Borderlands Game of the Year       2023 0.001081448 0.07536858
## 3          Borderlands Game of the Year       2023 0.001721563 0.07536324
## 4                 Resident Evil Village       2021 0.002454686 0.15912046
## 5          Borderlands Game of the Year       2023 0.001223696 0.06621928
## 6          Borderlands Game of the Year       2023 0.001001205 0.06142314
## 7          Borderlands Game of the Year       2023 0.001159866 0.05460165
## 8          Borderlands Game of the Year       2023 0.001034032 0.04909941
## 9                 Resident Evil Village       2021 0.001313056 0.09986130
## 10               MADNESS: Project Nexus       2021 0.001147101 0.01160645
## 11                              Krunker       2021 0.001283877 0.01299037
## 12    The Stanley Parable: Ultra Deluxe       2022 0.001161690 0.02730624
## 13                  My Singing Monsters       2021 0.001577491 0.01596118
## 14         Borderlands Game of the Year       2023 0.001544665 0.03630830
## 15                   Paint the Town Red       2021 0.001209106 0.02271326
## 16                             Rec Room       2021 0.002192075 0.02217958
## 17                             Rec Room       2021 0.001170809 0.02199383
## 18                                 Muck       2021 0.004123362 0.04172049
## 19                       Cookie Clicker       2021 0.001562902 0.04672591
## 20         Borderlands Game of the Year       2023 0.001391475 0.03393675
## 21    Totally Accurate Battle Simulator       2021 0.003337352 0.03376758
## 22                          Gorilla Tag       2021 0.001272935 0.01287965
## 23                        Halo Infinite       2021 0.001167161 0.06841993
## 24         Borderlands Game of the Year       2023 0.002002411 0.03243626
## 25                            Crab Game       2021 0.007083209 0.07166845
##         lift       Left_Developers         Right_Developers
## 1  13.855146     Traveller's Tales                 TT Games
## 2   5.676859 Bethesda Game Studios         Gearbox Software
## 3   5.676457  Tripwire Interactive         Gearbox Software
## 4   5.489961                Capcom         CAPCOM Co., Ltd.
## 5   4.987722                 Valve         Gearbox Software
## 6   4.626470                  DICE         Gearbox Software
## 7   4.112667        CD PROJEKT RED         Gearbox Software
## 8   3.698231                 Valve         Gearbox Software
## 9   3.445407     EA Redwood Shores         CAPCOM Co., Ltd.
## 10  3.307832                 Valve        GIBBING TREE, LLC
## 11  3.189935                 Valve Yendis Entertainment Pty
## 12  2.883875                 Valve        Crows Crows Crows
## 13  2.876154                 Valve          Big Blue Bubble
## 14  2.734788                 Valve         Gearbox Software
## 15  2.671507     Facepunch Studios         South East Games
## 16  2.671190                 Valve                 Rec Room
## 17  2.648820     Facepunch Studios                 Rec Room
## 18  2.611824                 Valve                     Dani
## 19  2.608597    PopCap Games, Inc.           Orteil,DashNet
## 20  2.556160                 Valve         Gearbox Software
## 21  2.501497                 Valve                 Landfall
## 22  2.492031                 Valve            Another Axiom
## 23  2.491520      Pandemic Studios           343 Industries
## 24  2.443141                 Valve         Gearbox Software
## 25  2.364253                 Valve                     Dani
##                                             Right_Publishers
## 1  Warner Bros. Games,Warner Bros. Interactive Entertainment
## 2                                                         2K
## 3                                                         2K
## 4                                           CAPCOM Co., Ltd.
## 5                                                         2K
## 6                                                         2K
## 7                                                         2K
## 8                                                         2K
## 9                                           CAPCOM Co., Ltd.
## 10                                         GIBBING TREE, LLC
## 11                                  Yendis Entertainment Pty
## 12                                         Crows Crows Crows
## 13                                           Big Blue Bubble
## 14                                                        2K
## 15                                          South East Games
## 16                                                  Rec Room
## 17                                                  Rec Room
## 18                                                      Dani
## 19                                                Playsaurus
## 20                                                        2K
## 21                                                  Landfall
## 22                                             Another Axiom
## 23                                         Xbox Game Studios
## 24                                                        2K
## 25                                                      Dani
##                       Left_Publishers
## 1          LucasArts,Lucasfilm,Disney
## 2                  Bethesda Softworks
## 3                Tripwire Interactive
## 4                              Capcom
## 5                               Valve
## 6                     Electronic Arts
## 7          CD PROJEKT RED,1C-SoftClub
## 8                               Valve
## 9                     Electronic Arts
## 10                              Valve
## 11                              Valve
## 12                              Valve
## 13                              Valve
## 14                              Valve
## 15                              Valve
## 16                              Valve
## 17                              Valve
## 18                              Valve
## 19 PopCap Games, Inc.,Electronic Arts
## 20                              Valve
## 21                              Valve
## 22                              Valve
## 23         Lucasfilm,LucasArts,Disney
## 24                              Valve
## 25                              Valve
associationRules %>% 
    filter(Left_year > 2020 & Right_year < 2010) %>%
    arrange(desc(lift)) %>% 
    head(25)
##                               Left_Name Left_year
## 1  LEGO® Star Wars™: The Skywalker Saga      2022
## 2          Borderlands Game of the Year      2023
## 3          Borderlands Game of the Year      2023
## 4                 Resident Evil Village      2021
## 5          Borderlands Game of the Year      2023
## 6          Borderlands Game of the Year      2023
## 7          Borderlands Game of the Year      2023
## 8          Borderlands Game of the Year      2023
## 9                 Resident Evil Village      2021
## 10               MADNESS: Project Nexus      2021
## 11                              Krunker      2021
## 12    The Stanley Parable: Ultra Deluxe      2022
## 13                  My Singing Monsters      2021
## 14         Borderlands Game of the Year      2023
## 15                   Paint the Town Red      2021
## 16                             Rec Room      2021
## 17                             Rec Room      2021
## 18                                 Muck      2021
## 19                       Cookie Clicker      2021
## 20         Borderlands Game of the Year      2023
## 21    Totally Accurate Battle Simulator      2021
## 22                          Gorilla Tag      2021
## 23                        Halo Infinite      2021
## 24         Borderlands Game of the Year      2023
## 25                            Crab Game      2021
##                                      Right_Name Right_year     support
## 1          LEGO® Star Wars™ - The Complete Saga       2009 0.001123393
## 2           Fallout 3: Game of the Year Edition       2009 0.001081448
## 3                                 Killing Floor       2009 0.001721563
## 4                               Resident Evil 5       2009 0.002454686
## 5                                   Left 4 Dead       2008 0.001223696
## 6                                Mirror's Edge™       2009 0.001001205
## 7  The Witcher: Enhanced Edition Director's Cut       2008 0.001159866
## 8                      Half-Life 2: Episode Two       2007 0.001034032
## 9                                    Dead Space       2009 0.001313056
## 10                              Team Fortress 2       2007 0.001147101
## 11                              Team Fortress 2       2007 0.001283877
## 12                                       Portal       2007 0.001161690
## 13                              Team Fortress 2       2007 0.001577491
## 14                                       Portal       2007 0.001544665
## 15                                  Garry's Mod       2006 0.001209106
## 16                              Team Fortress 2       2007 0.002192075
## 17                                  Garry's Mod       2006 0.001170809
## 18                              Team Fortress 2       2007 0.004123362
## 19              Plants vs. Zombies GOTY Edition       2009 0.001562902
## 20                       Counter-Strike: Source       2004 0.001391475
## 21                              Team Fortress 2       2007 0.003337352
## 22                              Team Fortress 2       2007 0.001272935
## 23     Star Wars: Battlefront 2 (Classic, 2005)       2009 0.001167161
## 24                                  Half-Life 2       2004 0.002002411
## 25                              Team Fortress 2       2007 0.007083209
##    confidence      lift          Left_Developers      Right_Developers
## 1  0.11365314 13.855146                 TT Games     Traveller's Tales
## 2  0.08145604  5.676859         Gearbox Software Bethesda Game Studios
## 3  0.12967033  5.676457         Gearbox Software  Tripwire Interactive
## 4  0.08469137  5.489961         CAPCOM Co., Ltd.                Capcom
## 5  0.09217033  4.987722         Gearbox Software                 Valve
## 6  0.07541209  4.626470         Gearbox Software                  DICE
## 7  0.08736264  4.112667         Gearbox Software        CD PROJEKT RED
## 8  0.07788462  3.698231         Gearbox Software                 Valve
## 9  0.04530296  3.445407         CAPCOM Co., Ltd.     EA Redwood Shores
## 10 0.32692308  3.307832        GIBBING TREE, LLC                 Valve
## 11 0.31527094  3.189935 Yendis Entertainment Pty                 Valve
## 12 0.12268875  2.883875        Crows Crows Crows                 Valve
## 13 0.28425895  2.876154          Big Blue Bubble                 Valve
## 14 0.11634615  2.734788         Gearbox Software                 Valve
## 15 0.14221364  2.671507         South East Games     Facepunch Studios
## 16 0.26400176  2.671190                 Rec Room                 Valve
## 17 0.14100593  2.648820                 Rec Room     Facepunch Studios
## 18 0.25813449  2.611824                     Dani                 Valve
## 19 0.08725311  2.608597           Orteil,DashNet    PopCap Games, Inc.
## 20 0.10480769  2.556160         Gearbox Software                 Valve
## 21 0.24723048  2.501497                 Landfall                 Valve
## 22 0.24629499  2.492031            Another Axiom                 Valve
## 23 0.04250232  2.491520           343 Industries      Pandemic Studios
## 24 0.15082418  2.443141         Gearbox Software                 Valve
## 25 0.23366623  2.364253                     Dani                 Valve
##                      Right_Publishers
## 1          LucasArts,Lucasfilm,Disney
## 2                  Bethesda Softworks
## 3                Tripwire Interactive
## 4                              Capcom
## 5                               Valve
## 6                     Electronic Arts
## 7          CD PROJEKT RED,1C-SoftClub
## 8                               Valve
## 9                     Electronic Arts
## 10                              Valve
## 11                              Valve
## 12                              Valve
## 13                              Valve
## 14                              Valve
## 15                              Valve
## 16                              Valve
## 17                              Valve
## 18                              Valve
## 19 PopCap Games, Inc.,Electronic Arts
## 20                              Valve
## 21                              Valve
## 22                              Valve
## 23         Lucasfilm,LucasArts,Disney
## 24                              Valve
## 25                              Valve
##                                              Left_Publishers
## 1  Warner Bros. Games,Warner Bros. Interactive Entertainment
## 2                                                         2K
## 3                                                         2K
## 4                                           CAPCOM Co., Ltd.
## 5                                                         2K
## 6                                                         2K
## 7                                                         2K
## 8                                                         2K
## 9                                           CAPCOM Co., Ltd.
## 10                                         GIBBING TREE, LLC
## 11                                  Yendis Entertainment Pty
## 12                                         Crows Crows Crows
## 13                                           Big Blue Bubble
## 14                                                        2K
## 15                                          South East Games
## 16                                                  Rec Room
## 17                                                  Rec Room
## 18                                                      Dani
## 19                                                Playsaurus
## 20                                                        2K
## 21                                                  Landfall
## 22                                             Another Axiom
## 23                                         Xbox Game Studios
## 24                                                        2K
## 25                                                      Dani

Summary

I analyzed recommendations made on the Steam platform. The biggest drawback is that, due to technical limitations, I had to focus on active Steam users. If less active users share the same preferences as those more active in writing reviews, the analysis is complete. If not, this could somewhat distort the relationships between different games. Another obstacle was the strong correlation between games from the same series. In summary, association rules can be a useful technique for analyzing such relationships.