A platformer with an unprecedented five hundred achievements.
WARNING: If your computer runs this game slower than 15 fps, completing the game may be near-impossible. If so, you can play the old version (below) which has a clunkier frame-based timer.
HOWEVER, if you want to stick with this new version, but can't get your framerate high enough to get the speedier achievements, try turning the quality to low (press Q) or zooming out (clicking outside of the Flash window, and pressing Control-Minus). These changes might increase your framerate.
Old version from 2011