So i have been thinking of a way to implement the "choose the best creatures" idea and i think it would be cool if you just got to give the creature a score. The score could be any number, but the higher the score, the better. You could use the same programming as deciding who was best in running, but just plug in the users score instead of distance. The creatures will still try to evolve to get a higher score even though the goal could change. It would be amazing if you put that in. By the way this is probably the coolest simulator i