Check out darwin pond: http://www.ventrella.com/darwin/darwin.html http://www.ventrella.com/darwin/darwin.html It's not fancy hmtml, but it's the best genet

Check out darwin pond: http://www.ventrella.com/darwin/darwin.html http://www.ventrella.com/darwin/darwin.html It's not fancy hmtml, but it's the best genetic simulation I've seen. The "swimmers" exist in 2d space, seek out food and mate. Only the best will reach the food fast enough, and there are colors which a given swimmer will prefer to mate with, and space separating different populations. It's very possible to get several distinct populations which behave in entirely different ways.