Try making your own levels by remixing and adding a costume! Make sure to choose a target, too! It's recommended to use turbo mode when evolving your characters. Press Space for stats.
This is a little experiment. How it works is 4 different characters with the same abilities are placed in the same place. Each one has completely random movement. At the end of the generation, all the characters are ranked judging by how close they got to the target. Third and Fourth place die, Second place survives, and First place survives and has two children with near-identical movement patterns with slight differences. Fast-forward a good few thousand generations, and you may want to race them. They might even est you after all the trail and error!