Description Cannon Defense is a 6 player map created by Bob27. The object of the game is to survive 20 waves of enemies, who will try and get past you. Each player will control their own Cannon, which they can use to shoot at the approaching enemies, and try and kill them before they reach the edge of the map. Once they reach the edge of the map you will loose one life, and then when you have no lives left you loose the game.