Killing Floor 2.5

Killing Floor is a Total Conversion of the Unreal Tournament 2004 game. Playing as a squad of marines, you must use firepower and teamwork to drive back massive hordes of bloodthirsty zombies. Killing Floor features some of the most detailed and atmospheric environments you will see in a horror themed mod, and the objective is to make something that is not only visually pleasing, but also rewarding and fun from a gameplay standpoint.