Did you build it with gradle or run the release jar? (It's built on Windows with Java 8) If you get an error message or find the problem it would be cool if you message me.
Hi, I'm the author of the program, I just saw this post.
The evolution process here is about inheritance and variation of static attributes of the creatures like speed, vision range, etc...
Evolution of behavior is a very fascinating subject but was not something I originally planned to include in this project, so I hope I didn't disappoint anyone ;)