Home » News » Killing Floor UK Retail Release Killing Floor UK Retail Release Stuart Davidson August 11, 2009 News Killing Floor is now available for retail purchase in the UK. Killing Floor is set in an around London after a mad scientists experiments have broken loose and gone off on a rampage. Killing Floor includes a co-op game mode for up to six players where you obliterate multiple waves of specimens, a single player mode for offline play and 9 different monster types and more. Share On