Developer and Publisher: Valve
Release: 11/17/2009
Genre: FPS
Platform: X360/PC
The second edition will feature new survivors, bosses, weapons, items, a larger co-op campaign, more versus, and survival modes.
Developer and Publisher: Valve
Release: 11/17/2009
Genre: FPS
Platform: X360/PC
The second edition will feature new survivors, bosses, weapons, items, a larger co-op campaign, more versus, and survival modes.