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From the campaign:
Braiiiins! is a simple to learn card game, but offers a complex and dynamic rule system. It can be played as a single player game or up to six players in both co-op mode or player vs. player.
You control a Zombie Character and will raise up minion zombies to fight the Living characters in the Feeding Fields! With multiple scenarios and difficulty options, this game can be played by almost anyone.
Each Zombie has a type that determines how they will spawn minion zombies. Check out the rule book for more details on each zombie type.