Users Playing this game are also playing:

Mass Effect
Mass Effect
BioShock
BioShock
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Marvel: Ultimate Alliance
Freedom Force
Freedom Force
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Halo Wars

Users who own this game also own:

Team Fortress 2
Team Fortress 2
Portal
Portal
Half-Life 2
Half-Life 2
Half-Life 2: Lost Coast
Half-Life 2: Lost Coast
Counter-Strike: Source
Counter-Strike: Source

Users who love this game also love:

America's Army
America's Army
Golden Sun: The Lost Age
Golden Sun: The Lost Age
Half-Life 2: Episode Two
Half-Life 2: Episode Two
Half-Life 2: Episode One
Half-Life 2: Episode One
Half-Life: Blue Shift
Half-Life: Blue Shift