Grad project by Jenova Chen et al; it works out a game design concept, so has no particular goal at the end. It does look suspiciously like the beginning of Spore.
Things that look like you
Attack from the tail; if you hit the circle just behind their head, they die.
Things that are ovular/oblong
Take out the glowing circles as they pass by. If the creature goes dark, you can't eat the circles.
Big circular critter that kicks you around
Orange means its attacking. White means you can attack it. Drive in and attack the glowy spheres along its perimeter. You have to hit and run. Couldn't attack it very well until I had eaten pretty much everything else.
Red for down, blue for up, click to charge forward. Fun to waste time with.