LittleBigPlanet PSP passes the original's creativity, but stumbles in its conversion to the small screen.
Cambridge Studios mimicked the work of Media Molecule to great effect; the music, style and feel are all reminiscent of the original PS3 title. If you're looking for a continuation of the game you started on the PS3, this is it, because the look and feel are almost identical.
The levels are intensely imaginative and better than most or all of the levels from the original PS3 title. However, they aren't designed as well as the predecessor's levels. While the artistry and ideas in this version are inventive and fun, level design will sometimes leave you clueless what to do when you hit an impasse. I found myself far more likely to be stuck or experience a freak incident where the game didn't know how to handle objects or my movements than in the original game, which had far more polish.
There are a few minor issues, like only two planes for your SackBoy to move on, which I felt limited some of the game's levels from being anything more than switching back and forth between the planes and avoiding moving obstacles. Also, the camera is often too zoomed out for you to even care how your SackBoy is dressed. Without the ability to really see detail, choosing between outfits is inconsequential.
The lack of interaction between the PS3 and PSP versions is a bit confusing. One would think the developers would have provided some type of integration between the two, but there's nothing to be had.
The option to create your own levels is well and alive and the game includes the ability to share your levels and download other players' creations.
It's unfortunate that a few snags hold LittleBigPlanet back from being better than the original. This PSP is still a sum of parts. You get solid platforming, the create a level options of the original and enough paper doll style, catchy music and bizarre characters to make it a solid, well-rounded product.