Valve
39 games
Platform
Genre
Theme
Game mode
Language
Year
Portal 2
2011
Portal
2007
Half-Life 2
2004
Half-Life
1998
Counter-Strike: Global Offensive
2012
Left 4 Dead 2
2009
Team Fortress 2
2007
Dota 2
2013
Left 4 Dead
2008
Counter-Strike
2000
Counter-Strike: Source
2004
Counter-Strike 2
2023
Half-Life: Alyx
2020
Counter-Strike: Condition Zero
2004
Half-Life 2: Lost Coast
2005
Half-Life: Source
2004
Aperture Desk Job
2022
Day of Defeat: Source
2005
Day of Defeat
2003
Dota Underlords
2019
Half-Life 2: Deathmatch
2004
Alien Swarm
2010
Team Fortress Classic
1999
Portal: Still Alive
2008