Use the stylus to power up different colored balls and directionally launch them at the same colored monsters on the top screenTwo single player modes - Scenario (choose your path through a total of 20 stages with multiple objectives in each) and Survival (eliminate as many monsters as possible)Use power-ups that affect the playfield, balls and monsters to gain temporary advantagesAvoid power-down items that can hinder your progressTrigger chain attacks and explosions to destroy large numbers of monsters at once