Users Playing this game are also playing:

Team Fortress 2
Team Fortress 2
Left 4 Dead
Left 4 Dead
Left 4 Dead 2
Left 4 Dead 2
Super Smash Bros. Brawl
Super Smash Bros. Brawl
BioShock
BioShock

Users who own this game also own:

Half-Life 2
Half-Life 2
Portal
Portal
Counter-Strike: Global Offensive
Counter-Strike: Global Offensive
Portal 2
Portal 2
Counter-Strike
Counter-Strike

Users who love this game also love:

Half-Life
Half-Life
The Elder Scrolls V: Skyrim
The Elder Scrolls V: Skyrim
Minecraft
Minecraft
Garry's Mod
Garry's Mod
Half-Life 2: Episode One
Half-Life 2: Episode One