Projects I've built on this topic

• some-life — WIP - platform for testing evolutionary theories

• Robots versus Electric Sheep — C# simulation of life
• Lecture TimeTabling Using Genetic Algorithms — My undergraduate thesis from 1997

External references

• Spore Prototypes —
• Simulated Evolution
• Cambrian Explosion — evolve worms, rings, stars, or quadrupeds, HN:discussion
• victorqribeiro/invaderz — "Space invaders, but the invaders evolve with genetic algorithm" (demo) — HN:discussion
• introduction to genetic algorithms