It's plain, simple, and takes a while to get used to. There's not that much content in the levels, as it's just going up, left, down, and right, but the way the controls are set up is that you can't stop moving.

So, you have to think about what button you're going to press, and when you finally get the hang of it, the game tries to throw in different hazards to make you screw up.

If you need a little game to play, and to improve on your memorization and concentration skills, go play this. Just make sure not to anger yourself, and really CONCENTRATE on your movements.