Fun
Graphics: Great, the simple free transform stuff was good despite its simplicity. Colors were nice on the eyes, and it stayed interesting. The only thing that bothered me was when you would make a 2 out of 2's or something, which made the sequencing occasionally hard to follow. I've already memorized 64 digits and I'd like to memorize more... Which this song obviously wasn't meant to help with.
Sound: Pretty good, the only thing that was a little weird is how the theme of it gradually changed throughout the animation... If you replay it just from hearing the end you can hear it just goes insane from beginning to end. Not sure if that's good or bad, though.