Space Channel 5 Codes -

CPU control:
Hold L + R and press Up, Left, A, Left, A, Down, Right, B, Right, B during game play. A sound will confirm correct code entry. The game will continue by itself under CPU control.

Full pause screen:
Press Start to pause game play, then press X + Y.

Alternate game:
Successfully complete the game, then load the saved game file and select any level. Game play will begin with new routes at a harder difficulty setting.

Fiery Ulala:
Achieve a rank of 95% or higher to play as Ulala surrounded by purple fire.

Michael Jackson cameo:
Michael Jackson can be found in the last level of the game.

Hint: Defeating the second-to-last Boss:
When facing the Boss that makes you copy its moves in reverse, simply turn your controller upside-down -- you will not have to think the reversed commands.