From dan369's PGELUA Platformer thread:

This is my latest project, a 2d side-scrolling platformer. Its written in Lua for the PGE API. I've been working on this for over a month now, i would of got to this stage sooner but exams, coursework all that stuff gets in the way. The name of this hasn't been thought up yet, so if you have suggest/comments just post up
This is a demo first level, The level itself is the first mario level in Mario for the NES.

Features:
- Destroyable blocks
- Checkpoint System (Needs a little refining)
- Scrolling
- Jumping blocks
- Moving Platforms (Needs a little refining)
- Dying.
- End level sequence (has a bug )
- Full Collision
- Enemies (at a early stage, currently only one )

The bug: It doesn't dofile the win file & crashes the PSP. You will need to restart it. I think its a PGE issue.