Borderlands
2.4 hrs last two weeks / 12.8 hrs on record
Bioshock
Commander Keen Complete Pack
Counter-Strike
Counter-Strike: Source
6 hrs on record
Day of Defeat
Deathmatch Classic
Defcon
Doom 2
Doom 3
Doom 3: Resurrection of Evil
Final Doom
Half-Life
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
View statsView global gameplay stats
Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Heretic: Shadow of the Serpent Riders
Hexen
Hexen 2
Hexen: Deathkings of the Dark Citadel
Left 4 Dead
2.4 hrs on record
View statsView global gameplay stats
Left 4 Dead Authoring Tools
Master Levels of Doom II
Portal
0.8 hrs on record
View statsView global gameplay stats
Quake
Quake 3 Arena
Quake 3 Team Arena
Quake II
Quake II: Ground Zero
Quake II: The Reckoning
Quake Mission Pack 1: Scourge of Armagon
Quake Mission Pack 2: Dissolution of Eternity
Return to Castle Wolfenstein
Ricochet
Source SDK
Spear of Destiny
Team Fortress 2
5.6 hrs on record
View statsView global gameplay stats
Team Fortress Classic
The Ship
0.4 hrs on record
The Ship Tutorial
Ultimate Doom
Wolfenstein 3D
