Users who own this game also own:

Portal
Portal
Portal 2
Portal 2
Left 4 Dead
Left 4 Dead
Left 4 Dead 2
Left 4 Dead 2
Half-Life 2
Half-Life 2

Users who love this game also love:

Mass Effect
Mass Effect
Mass Effect 2
Mass Effect 2
Half-Life
Half-Life
Grand Theft Auto: San Andreas
Grand Theft Auto: San Andreas
Star Wars Jedi Knight II: Jedi Outcast
Star Wars Jedi Knight II: Jedi Outcast