Half-Life
23.5 hrs last two weeks / 275.8 hrs on record
Plants vs. Zombies
10 hrs last two weeks / 19.8 hrs on record
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Assassin's Creed
14.9 hrs on record
Condition Zero
Condition Zero Deleted Scenes
Counter-Strike
Counter-Strike: Source
Darkest Hour
Day of Defeat
Day of Defeat: Source
1.8 hrs on record
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Deathmatch Classic
Half-Life 2
Half-Life 2: Deathmatch
Half-Life 2: Episode One
Half-Life 2: Episode Two
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Half-Life 2: Lost Coast
Half-Life: Blue Shift
Half-Life: Opposing Force
Half-Life: Source
Half-Life Deathmatch: Source
Left 4 Dead
99.9 hrs on record
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Left 4 Dead Authoring Tools
Mare Nostrum
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Mare Nostrum Dedicated Server
Mass Effect
0.5 hrs on record
Mirror's Edge
2.6 hrs on record
Portal
0.2 hrs on record
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Prey
Red Orchestra
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Ricochet
Source SDK
Street Fighter IV
0.7 hrs on record
Team Fortress 2
18.4 hrs on record
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Team Fortress Classic
World of Goo
4.2 hrs on record
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