Ball Fighter is a puzzle game in which you take aim and blast groups of dropping spheres to create matches and clear the board. You can make chains to earn additional points or to make the game more difficult for an opponent. When you destroy spheres in a multiplayer mode, they will be added to the opponent's board, making his or her task more difficult. You can find special bonuses like a Brush, a Rocket Launcher or a Bomb, which can be used to destroy spheres or to paint a line of them with the same color. You'll find a variety of single-player modes, including Arcade, Survival, Brain Breaker and Player vs CPU, plus the unique multiplayer mode, all playable on one Nintendo DSi system.