EDIT: Went back and did a bit of rewriting to make it more interesting.
DO - RE - MI - FA - SO *PWANG*. That's the rhythm of Built to Scale.
Based on Rhythm Heaven, an extremely popular Nintendo DS game. Nice game, but earning Perfects is as hard as hell. This is based on the very first mini-game, Built to Scale. My current audience is largely Sonic the Hedgehog-oriented, so I don't know if they're familiar with this game.
Rhythm Heaven, Built to Scale, etc. © Nintendo