The little-known retro-themed PSN shooter, Gravity Crash isn't staying still on PS3. SCEE stealthily revealed a PSP version at Gamescom. Like its big brother, Gravity Crash will be distributed through the PlayStation Network. Looking at the trailer for the PS3 game (above), it's clear the transition to PSP should be rather easy.
Both versions of the game are being developed by Just Add Water, but it appears that only the PS3 version will include the ability to create and share levels. Too bad! Guess PSP owners will have to stick with LittleBigPlanet instead.