Users who own this game also own:

Payday: The Heist
Payday: The Heist
Left 4 Dead 2
Left 4 Dead 2
Team Fortress 2
Team Fortress 2
Half-Life 2: Episode One
Half-Life 2: Episode One
Portal
Portal

Users who love this game also love:

Quake II
Quake II
Half-Life 2
Half-Life 2
Wario Land 4
Wario Land 4
Gun
Gun
Borderlands
Borderlands