(Or maybe a clone?)

I think Little big planet is overrated. It's a good platform game, but a expensive game. But it's a phenomenom due to the avatars (eeer... sackboys) and the ability to create, share and download new levels.

I can only recall two PC platform games that allowed creation of new levels (Jazz Jackrabbit 2 and Duke Nukem: Manhattan Project), but it's hard to find levels for them (well, at least for DNMP, Jazz had a greater community).

The question: are there any modern platform game comparable with Little big planet (tons of levels!)? Where can I find it?