Nothing says "we have met the enemy and he is us" like this game. Like okAI mentioned below, I constantly found myself berating past me for the stupid actions I took that screwed up my present. A really good use of the limitation and an excellent implementation of that idea.
The game plays really well, and while I didn't do very well at all, every time I died, it was immediately apparent that my own actions had caused this eventuality. Though with all the precision this game needs, I'd have liked to see a variable jump height.
The simple graphics are easy to read and fits well, and the chipper music served as an excellent soundtrack to the fall of my sanity.