I want to demonstrate how much game play there is in Gene. You must follow in story mode to unlock each level and collect the gems and ship parts. Once complete, you can then replay any level you want again to obtain high score, which you can't do in story mode as you don't have all the mutations yet.
I have created a demo showing how the mutations work in getting through the level and having already completed the level, how much game time you have when you go back to collect all coins and kill all enemies to get 100% high score.