- Versus mode
Successfully complete the tutorial to unlock Versus mode.

- Arcade mode
Successfully complete the tutorial to unlock Arcade mode.

- Bonus weapons
Successfully complete the indicated world in Arcade mode to unlock the corresponding weapon:

Weapon Steal	World 6
Whirlwind	World 2
Shield	World 4
Homing Shot	World 3
Fireballs	World 5
Repulse Shield	World 7
Stop Time	World 8

- Alarm clock
Successfully complete Mission mode to unlock the alarm clock.

- Relax mode
Connect all the dots on the bonus levels to unlock Relax mode.

- Challenge mode
Successfully complete the Egypt world in Arcade mode to unlock Challenge mode.

- Mission mode
Successfully complete Arcade mode to unlock Mission mode.