I spent a lot of time on this, and I'm quite proud of the result.
This is a racing game in which you are a ball that rolls around the race course. There are boost squares along the course, and if rolled over, they temporarily remove the the ball's speed limit (and turn it red for effect). It can also keep track of lap times, and it will remember the best lap time too. To use this feature, you must have Alice watch the variables "world.lap time" and "world.best time". I especially like the fact that the ball rolls in sync with it's speed and direction.
Any feedback or questions are welcome.
Edit: I found and fixed a glitch that let you roll backward with no speed limit.
Also, it is possible to trick the lap system, but it isn't really a big deal since tricking it does not actually allow the player to get better lap times. (Also, raised speed limit.)