Completely free open source game based on Quake 3. Combines FPS with elements of RTS. Two teams: Humans and aliens. http://www.tremulous.net

Co-Op Games for PC Click the Game. coop PC games? RPG separate co-op mode. Cooperative non-online PC game database. Me and a friends like Network co-op play. War games or shooting games - just good co-op shooter games for pc.

What are the best coop PC games?
Support campaign co-op !!!
The best co-op PC games through LAN not online PC games get released with local co op

Operation Flashpoint: Dragon Rising PC Games Gameplay - Co-Op Gameplay

PC coop games (No FPS) ?

Call of Duty Modern Warfare 2
Coop mode PC game play. I’m load’en it up.