October 29th, 2019
Enter into the Halloween party and kill as many as people in this awesome multiplayer Killer.io game. Don't kill people around the crowd or stand near dead bodies, otherwise you will get caught by cops.
You can play Killer.io unblocked on our Cool Math Games website. If you enjoyed playing it, you should take a look at our similar games Ninja.io
Z to kill
X to interact.
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