Looks like a lot of those would benefit from a little more evolving. Apparently the generations varied from 50-100. This paper is really interesting, and shows how detailed the simulation is: http://www.karlsims.com/papers/siggraph94.pdf

That's very cool, especially for 1994. I'd love to play a VR game where you get to breed and play with such creatures, kind of like what Spore should have been.

And here's a genetic walker you can grow in your own browser: https://rednuht.org/genetic_walkers/