21 games have a publisher similar to 'Valve'
(PCD) AudioSurf
(PCD) Crysis Warhead
(PC) Day of Defeat: Source
(PCD) Day of Defeat: Source
(PC) Deathmatch Classic
(PCD) Garry's Mod 10
(PCD) Half-Life 2
(PC) Half-Life 2: Episode One
(PCD) Half-Life 2: Episode One
(PCD) Half-Life 2: Episode Two
(PC) Half-Life: Day of Defeat
(PC) Left 4 Dead
(360) Left 4 Dead
(PCD) Left 4 Dead
(PCD) Peggle Extreme
(PCD) Rag Doll Kung Fu
(PCD) Red Orchestra: Ostfront 41-45
(PC) Ricochet
(PC) SiN Episodes: Emergence
(PCD) Team Fortress 2
(PC) Team Fortress Classic