R-Type DX - Platform: Gameboy Color

Level skip
----------
Press Start to pause game play, then press B to advance through 
any level that was previously played. 

Invincibility
-------------
Successfully complete R-Type DX using ten or less credits. 
Then, press Select + A during a R-Type Standard type game. 

Quick reset
-----------
Hold B during game play and power the Game Boy off and on 
while continuing to hold the button. The game will resume at 
the start of the last level played with five lives but no 
points or power-ups. 

Drawing mode
------------
Successfully complete the game in R-Type I Enhanced, R-Type II 
Enhanced, and R-Type DX. Press Right at the game type selection 
screen until the De Souza drawing editor option appears. 
Then, press Start to begin.