Evolve the bacteria population towards several "color" goals. The bacteria divide and occasionally mutate. Drive them towards the center with the mouse to increase their division rate. Drive them outwards to speed up their death.
This game was developed in 48 hours for the Ludum Dare competition. It uses ThreeJS and PhysiJS, which turned out to be a bit of overkill for this game idea. Also, the memory requirements are insane. Chrome needs about 1-2GB of RAM to run this game, and will freeze sometimes to clean up the mess I left.