Note! This review was written for a previous version of this file!
I play Mr. Worm all the time. I don't know why, but I find that there's always something addicting about the simplest games, and this certainly proves true for Mr. Worm. The gameplay is pretty simple: you move your worm around and collect the little dots. After you get enough, a door opens at the top of the screen that advances you to the next level. In each level, the walls get closer and closer together to increase difficulty. The 360° movement really is a plus over all the other Tron/Snake/Worm games, and if you think the game is too easy or hard, there are three speed adjustments to suit your skill level.
Overall, the game is very simple, yet pretty addicting. Even better, it's small and barely takes up any memory on your calculator. It's staying on mine.