Killer.io may be a cool online multiplayer IO game is by it's serial murderer and you'll roll in the hay for free of charge and online game. you're taking on the role of a man with a hockey mask, additionally to a party filled with innocent teenagers, and, coincidentally, you've got a knife in Hand. We all know what happens next, right? Kill people if nobody sees you, hide the bodies and do not allow them to check out you next to a corpse, or we'll have the police come for you. tons of fun with this fun, free online Killer.io game here.