Krunker.io is a fantastic 3D MMO shooting Io game. Play Free For All or take part in a Team Deathmatch. In which, you will have to destroy every enemy around you before they do the same for you. You will win the top spot and conquer the round if you collect the highest score. Hop into the arena and show up the own skills to defend yourself and attack other people. You can spray instead of using your gun. Good luck!
Instructions: Press WASD to move, Space to jump, LMB to fire, R to reload, RMB to aim, Shift to crouch, F to spray.