Moaku has released the first public version of what is one of the most unique puzzle games so far for the PSP, heres what the coder wrote:

The project's goal is to do a basic simple game in order to add features / effects/ variants in the future to train with pspsdk and its libraries. I've choose the Pentomino. Searching google, I found numbers of variants that I
never heard about that don't use digits, so I guessed that this gamebase that I learned to play with when I was 10 was the perfect choice.

Download via the comments and give feedback