Creat Studios have announced that they are brinigng a fan request feature to Mushroom Wars. Online will be available via DLC, out 15th December for €2.99/£2.39. Creat will also release a new map pack on 15th December for €0.99/£0.79. The Multiplayer modes will include both off-line and online multiplayer for up to 4 players.
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From EU Playstation Blog