That is by far the most interesting minigame. On the first day, before I landed on the minigame idea, I had the player follow spatialized audio through the fractal. That sort of thing requires headphones though... I could of had another matching minigame where you only change the exponent but that kind of challenge is trivial. I think there is a lot of potential for more exploration based games, I honestly didn't spend much time on the minigames.