Killer.io is an amusing killing game. You can check it out on this page , for free. The game is powered by HTML5 technology to run in all modern browsers. You can play Killer.io in full-screen to avoid any distractions. DAB3Games created Killer.io. It has been played by 169,512 people and has been rated 8.6 / 10 by 1,958 people. Did you like playing this game? Then check out our other killing games or ShooterZ and Anti-Terrorist Rush 3.