Users Playing this game are also playing:

Halo: Combat Evolved
Halo: Combat Evolved
Halo 3
Halo 3
Halo: Reach
Halo: Reach
Call of Duty: Modern Warfare 2
Call of Duty: Modern Warfare 2
Halo 4
Halo 4

Users who own this game also own:

Portal
Portal
Halo 3: ODST
Halo 3: ODST
Portal 2
Portal 2
Half-Life 2
Half-Life 2
Half-Life
Half-Life

Users who love this game also love:

Halo 2
Halo 2
Super Smash Bros. Brawl
Super Smash Bros. Brawl
Call of Duty 4: Modern Warfare
Call of Duty 4: Modern Warfare
Gears of War
Gears of War
Super Mario Bros. 3
Super Mario Bros. 3