Create your own platformer that creates music.
This seemed a bit lame at first, but really caught my interest. Sound Shapes is a platformer coming to the Sony NGP. You create your own level, but you can pick different instruments and notes for everything you put into the level. The creating process looks fairy simple and the sound is nice. As far as movement goes, your little ball can jump and stick/ un-stick to surfaces. Red things hurt you and bounce pads record the sequence you hit them, and add that beat to the music! Heres the video.
With a simple music tool it does look really fun. Especially when you create a cool beat to a level and as you play more music is added onto it is a fun idea. Guy in the video said it took around 4 years to make, I don't really see that but ok. Anyone looking forward tot he NGP or toy-around games like this?