I ported my version of Bubble Universe to the Nintendo DS...
https://www.youtube.com/watch?v=rvgFeDGYQ1I
It's heavily optimized and manages to exceed 60fps at all times while simulating over sixteen thousand particles.
You can download the latest version here...
https://github.com/movievertigo/Nintend ... /releases/
Source code can be found here...
https://github.com/movievertigo/Nintend ... eUniverse/