Very fun. My attempt to "breed" a face:<p><a href="https://pasteboard.co/V8BwJFPuCVil.png" rel="nofollow">https://pasteboard.co/V8BwJFPuCVil.png</a><p>The experience of finding a trait that you want and then working to preserve it was interesting.
Notice this is a reimplementation in js. It's hosted on GitHub with no db. The original was a bit more sophisticated, with a lot of collaborative breeding stuff enabled by server-side code.