Simple

A small platformer I made around the year 2011. I had big plans that it could never live up to, and there's no ending, so it's essentially unfinished. But as a very basic game, I think it's decent.
A couple levels were contributed by people on a forum I frequented at the time.

Use the arrow keys, and remember to double-jump!
You can press F4 to go fullscreen. Press Shift to skip to the next level. I also left in Game Maker's default saving/loading via F5/F6.
Pressing Q will immediately quit!! There is NO progress tracking!