Sega Genesis Collection Cheats
PSP, PS2 | Submitted bySonic the Hedgehog Level Select
Up, down, left, right, hold X and press Start
PSP, PS2 | Submitted byAltered Beast Cheats
Hold Square and push Start repeatedly after dying - Continue Game on last level.
Select a level, hold Square and push Start - Level Select
Hold Square, Circle, Up/Right and Start at the Title Screen - Sound Test
Hold X and push Start on title screen - Secret Options Menu
Hold Square, X, Cirlce, Down/Left and Start on the Title Screen - Select Beasts for each level.