Disco Mode

Press Up Down(2) Triangle X left right Square on the title screen. All enemies are now disco balls. beat the game in this mode and you will get a suprise

Full health and ammunition

Pause the game and press L1(2), L2(2), L1, R1, L1, R1, R2, R1. Note: Each time this code is used your level will go down by one.

To get the versus mode without beating the game

Enter the following code when the ‘press start’ window appears O, X, Right, left, right, left, down, down, up, up. You will have all the characters and all the places were you can battle.

Versus Mode

First sucessfully finish the game this can be done of any difficulty setting, this will enable you to unlock versus mode with most stages and five frames.
To be able to unlock the last 2 frames and stages you again need to sucessfully finish on any difficulty setting twice to unlock these.

Alternating Music

As above again sucessfully finish the game on any difficulty setting but must achieve ‘A’ Rank on all the 5 rescue missions to be able to hear a different ending tune during the end credits.

Un-lock versus mode and two extra chacters

Press L2 5x as fast as you can.count to 5. Then do it again.right after you do that press up, up, up, up, up, right, down.