Zen Studios has revealed new information about the multiplayer mode of CastleStorm , a title that could be described as a mix between Angry Birds, a tower defense/offense and a RTS when in command of one of two factions, Knights or Vikings, we build our Castle and destroy the enemy. The game has three modes: one vs one multiplayer split screen co-op survival where a team made up of two players must fight against waves of enemies, and the cooperative mode.