Q Boy

Cheats

Codes
Hidden Stage Select and Sound Test

At the game's title screen, simply press select to go to a screen that lets you start at any level or cutscene and listen to the game's music.
Code ......................... Effect
Select Button at title screen Goes to Stage/Sound Select Screen

Unlockables
Play as Mario

You can unlock the playable Mario character at any point in the game. You can also switch back to your Q Boy character at any point as well.
Unlockable ................... How to Unlock
Play as Mario ................ Pause the game, Press Select, Unpause