Xtreme Sports - Platform: Gameboy Color

Cheat mode:
-----------
Press Left(5), Up(5), Right(5), Down(5), Select(5) at the title screen. 
All levels and bonuses will be unlocked. To access the sound test, hold 
A and press Left or Right to make a selection, then press Select to hear 
it. Select the "Scrapbook" option to view background information about 
the game. 

View ending sequence:
---------------------
Enter staff as a case-sensitive name. Enter the snack shop to view the 
ending sequence. Note: This also unlocks the hidden credits level. 
Quickly jump twice to get on top of the low building that appears 
immediately before the programmer's credit. Then, jump up and keep 
jumping to the right on the clouds until you find a hidden message. 

400 medals:
-----------
Enter xyzzy as a case-sensitive name. Then, hold A and press Select to 
increase the medal count to 400. Hold A and press Select again to reset 
the count to 0.