Gamma Zone

Level Codes:

Level 2  FOUR COLOURS
Level 3  DESERT OF ICE
Level 4  CRAZY ROOMS
Level 5  MANIAC ISLANDS
Level 6  BLACK OCEAN
Level 7  PIQUE

Cheats:

During play press 'SPACE' to pause the game and type "DINO".  
A picture will appear and then {CHEATMODE ACTIVATED} will appear.  
Press 'SPACE' to return to the game.  
Now Pause the game and enter any of the following:

ZASTER        Gives you 400 coins.
KNIGHTRIDER   Gives you the shield and other extras.
MAGIC         Gives you magic.
FOREVERYOUNG  Puts your time up to 600.
STEFFI        Gives you hearts (energy).
IMWALKING     Gives you fuel.
WINNER        Completes current level.