Killer.io is one of the classic io games. Start as a maniac and you need to assasinate everybody on the level. Do not murder people who are in the crowd! Additionally, you should not stand near dead bodies. Otherwise, you will be arrested. Play Killer.io free online you need to master the rules carefully! Remember to choose the right target if you want to increase your points and dominate the unblocked match! There are a lot of rivals to compete against and various upgrades to unlock. Good luck!
How To Play About Killer.io
Use the arrow keys to move around the level