MegaCheat:

 While playing type:  RUNCHEAT   for unlimited lives

Cheats:

 To get into the cheat mode you have to pause the game with spacebar.
 Now type in: DSIMAGIC (not Enter) and press the spacebar again. Now
 catch the yellow capsule DS. Now you can call up the other capsules
 with

 [B]      - Opens door and adds bonus points
 [C]      - Holds the ball
 [D]      - Divides into three balls
 [E]      - Lenghtens bat
 [L]      - Laser
 [P]      - Extra player
 [S]      - Slow
 [F]      - Warp to the last  level
 [Enter]  - Leave level