Valve

Including:

Game

Half-Life
Rank: 36
Dev: Valve
Platforms: WIN
Genres: Action, Adventure, Horror, Puzzle, Shooter
Half-Life Half-Life (1998)
Counter-Strike / Counter-Strike 1.6
Rank: 65
Dev: Valve
Platforms: WIN
Genres: Action, Shooter
Counter-Strike / Counter-Strike 1.6 Counter-Strike / Counter-Strike 1.6 (2000)
Counter-Strike: Source
Rank: 543
Dev: Hidden Path Entertainment, Valve
Platforms: WIN
Genres: Action, Shooter
Counter-Strike: Source Counter-Strike: Source (2004)
Half-Life 2
Rank: 5
Dev: Valve
Platforms: PS3, WIN, Xbox, X360
Genres: Action, Horror, Shooter
Half-Life 2 Half-Life 2 (2004)
Portal
Rank: 24
Dev: Valve
Platforms: PS3, WIN, X360
Genres: Action, Platform, Puzzle, Shooter
Portal Portal (2007)
Team Fortress 2
Rank: 113
Dev: Valve
Platforms: PS3, WIN, X360
Genres: Action, Shooter
Team Fortress 2 Team Fortress 2 (2007)
Left 4 Dead
Rank: 121
Dev: Certain Affinity, Turtle Rock Studios, Valve
Platforms: WIN, X360
Genres: Action, Horror, Shooter, Survival
Left 4 Dead Left 4 Dead (2008)
Left 4 Dead 2
Rank: 149
Dev: Turtle Rock Studios, Valve
Platforms: MAC, WIN, X360
Genres: Action, Horror, Shooter, Survival
Left 4 Dead 2 Left 4 Dead 2 (2009)
Portal 2
Rank: 14
Dev: Valve
Platforms: MAC, PS3, WIN, X360
Genres: Action, Adventure, Platform, Puzzle
Portal 2 Portal 2 (2011)
Counter-Strike: Global Offensive
Rank: 357
Dev: Hidden Path Entertainment, Valve
Platforms: MAC, PS3, WIN, X360
Genres: Action, Shooter, Tactical
Counter-Strike: Global Offensive Counter-Strike: Global Offensive (2012)
Dota 2
Rank: 204
Dev: Valve
Platforms: MAC, LIN, WIN
Genres: Action, MOBA, Strategy
Dota 2 Dota 2 (2013)
Firewatch
Rank: 223
Dev: Campo Santo
Platforms: MAC, LIN, PS4, WIN, XB1
Genres: Adventure, Indie, Open world
Firewatch Firewatch (2016)
Half-Life: Alyx
Rank: 168
Dev: Valve
Platforms: VR
Genres: Action, Adventure, Puzzle, Shooter
Half-Life: Alyx Half-Life: Alyx (2020)