ZombieThon is an arcade shoot ‘em up, with the goal of each mission being to survive as long as possible and to use any means to do so. Upgrades could come in the form of bouncing bullets, split shot, or even a few special upgrades that are nothing short of a natural disaster. Features Single-player mode, for those that like a challenge. 2 to 4 PLAYERS in Scaling Online Multiplayer. Lots of different upgrades and combos for your weapons. Special bullet abilities. Unlockable characters in each level. Unique character abilities. 3 maps with more on the way. Infinitely scaling waves.