Shootingheads is a free MMO 2d shooter game. Pick out the character that you like most and you can battle against other players in the same platform-type arena. Move around the map your way. Not only that, you should learn hơ to fire the gun and collect the higher score than the opponent with headshots. Climb up to the better spot and you will have the chance to dominate the leaderboard. Jumping continuously when you are in danger is a good strategy. Good luck!