Killing Floor is a co-op survival horror game where the aim is to kill each wave of zombies each progresivly harder than the last. Featuring persistant perks the more you play the better your character gets with improvements to your characters skills and abilities.
CPU: Pentium 4 2.4GHz and Athlon XP 2800+ or better.
Video Card: 64 MB DX9 Compliant or better
Free Disk Space: 2GB