Nintendo has announced Mario Party 9 will launch in Europe on March 2. The game brings with it new boss fights, 80 mini-games, and Party Adventure mode, where you and three buddies hop into a vehicle together and roam across the board. The new Boss Battle mini-game also allows you and your buddies to best a series of Mario boss characters before finally facing Bowser in the ultimate showdown. Mario Party 9 will release in the US on March 11. Thanks, Nintendo Universe.