Toy Commander cheats and cheat codes for Dreamcast

Pause the gameplay, then enter the following codes:

All maps: Hold L and press A, Y, X, B, Y, X. 
Heavy weapon: Hold L and press X, A, Y, B, A, X. 
Switch machine gun: Hold L and press B, A, Y, X, A, B.
99 heavy ammunition: Hold L and press A, B, X, Y, B, A.
Fix toy: Hold L and press A, X, B, Y, A, Y.
Single player Snail race: Hold L and press A, B, A, B, Y, X. 
Stage select: Hold L and press A, Y, X, B, Y, X.
Jump to last stage: Pause game hold L press R, A, X, B, Y, Y, A.
If the codes are accepted, you should hear a music.

99 missle weapons:
At the start menu Hold L and press A, B, X, Y, B, A

Credits
At the start menu press A, A, A, B, B, B.

Maximum Fuel for vehicle
During gameplay press B, Y, A, X, B, X


Extra multi-player levels
Play through each stage on 1 player mode in each level (ex. beat all stages 
on the 1st level) to access a new multi-player stage.

Secret images:
If you insert your game disc into a PC CD-ROM drive, you will find 
lots of images from the game.