Wurms
These small wurms you see when running the program, are all living creatures living in a small world. They have a small brain, that tells them what to do. Badly they are very stupid at the beginning – they get a random brain. But as they grow up and make childs, they change randomly. And so they slowly evolve into something smarter. After some time, you got some real geniouses ;). I like watching them, because they often show schemas of reactions, like moving in cirles, but everytime they are different. At the end, when they are smart, they go to the green points, eat them and go on. They have got only few sensors, like there actual speed, their health, how their health changed and their direction. And they only output their new speed and new direction. If you would give them better sensors or give em bigger quests, they should get really clever after some time.