Honestly the first time I played I was very confused what to do, but I read through these comments and saw you explain you are trying to generate energy in each of the mini games, went back and was able to decipher what was going on (minus the mammoth one, I still don't understand what I was supposed to do). I really liked the idea of the cryptic graphics, but feel like without a reset on a specific level you should provide a help tab to at least have the player know what you were supposed to do. It felt like the difficulty was tied up in the cryptic lack of explanation.
That aside I really enjoyed the art and music