Users Playing this game are also playing:

Bully: Scholarship Edition
Bully: Scholarship Edition
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Alien Swarm
Freelancer
Freelancer
Pokemon Diamond Version
Pokemon Diamond Version
Section 8
Section 8

Users who own this game also own:

Portal
Portal
Half-Life 2
Half-Life 2
Half-Life 2: Episode One
Half-Life 2: Episode One
Portal 2
Portal 2
Half-Life
Half-Life

Users who love this game also love:

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Geometry Wars: Retro Evolved
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Super Mario Galaxy
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Super Smash Bros. Melee