Little Big Planet for the PSP was a watered down version of the game, and only allowed 2 layers of interaction, whereas the full PlayStation 3 version allows 3 layers of interaction. LittleBigPlanet for the PSV however, looks like it will also allow 3 layers of interaction i.e. allow Sackboy to move in 3 layers of 3D space, bring more of a console-like gaming experience.