Flop
Flop is an entry for the 48-hour competition portion of Ludum Dare 31: "Entire Game on One Screen."
Play it Now!...or read the source, or look at its Ludum Dare page.
For various reasons, I'm not particularly happy with the result -- I lost some time to silly bugs and wasn't even able to get sound into the game. Movement also isn't as optimized as I would like, nor is the graphical style quite where I want it to be.
That said, I think there's a fun core in here, and I might actually develop things further. I've never made a straight-up platformer. (Rktcr is one, but perhaps only in a superficial way.)