You play the role of a single cell organism on its quest to become multicellular. You achieve this by eating the other small organisms. For every organism you eat you gain cells and points. Be carefull not to run into yourself or one of the enemies (large pink organisms) as this results in game over.

http://dl.openhandhelds.org/cgi-bin/wiz.cgi?0,0,0,0,27,81