I love the use of music, and the gameboy idea. I remember playing the gameboy like that, especially on long car trips for vacations.
The way it turned out, in a simon says kinda way, is pretty fun. Even though there wasn't any damage done, I still played it until I really won. I like the learning curve. It's a neat looking enemy, and the color scheme does remind me of the gameboy, while looking more appealing than the original gameboy colors.