Pac-Man, but Luigi. What more can be said?
It's not quite as fun as the real Pac-Man since there aren't any Mario-themed twists. Sometimes Luigi doesn't seem to want to turn down a pass, but it's not a huge problem.
My biggest complaint is the sound. That music was annoying as hell, and there weren't any sound effects. Add in the classic coin sound and maybe Luigi yelling, "Noooo!!!" when he dies. Then lower the volume on the music or change it completely.