Not really a game, I guess it’s playable though. This is a platformer engine I wrote for the PSP, it works just fine and is actually fairly robust but after writing it I honestly had no Idea what I wanted to use it for.
* PSP install instructions: From the root of the memory card, place the folder in this download under /PSP/GAME/ . Requires a PSP flashed with custom firmware or a development PSP. Read more about that here http://en.wikipedia.org/wiki/PlayStation_Portable_homebrew