Killing Floor is a co-op survival horror game where up to 6 players can join an online mode or play solo. The objective of the game is for players, either alone or with friends, to cleanse each area of zombies in waves until they reach the last one - known as 'The Patriarch.' These enemies are actually specimens from a government program who have escaped and gone rogue. Players must use weapons such as chainsaws and rocket launchers to fend them off while also trying not to breach the Official Secrets Act 1911, 1920, 1989 by revealing too much information about their mission. In Killing Floor you will face hordes of zombies but ultimately it's your job to make them all go away!