Cooperative horror FPS series Killing Floor will return for another monster mash (hopefully it'll be a graveyard smash) in Killing Floor 3, developers Tripwire Interactive announced today. Sadly they've said little about the game and shown even less but yup, once again you and your pals will get to fight through hordes of wacky bioengineered monsters. Honestly, science was a mistake. Isaac Downtown and his pal Harry Stottle owe us all an apology.