@cwebber @darius the creatures had genes, a neuronal network, and an emotion system. Their interactive environment and the way you treated them (slap, stroke, feed, starve, etc.) determined their character. You could breed them with other creatures, mixing genes, and see traits come back in offspring. Both eggs and creatures could be exchanged over the internet via a community. There was a marketplace with all kinds of items for the environment, brain upgrades, gen modifications, with editors.