The layers to this game are really cool. The mechanic of having your jump power increase with your score gives you the feeling of growing stronger, without the need to add other buttons or mechanics. It also means that if you fall from a high place, it's not as punishing because you can get back to where you were quickly. Then, after beating the game realizing that the real challenge is to get to the top while keeping your jump power as low as possible flips the whole game on its head and also triples the length and difficulty. It's this kind of simple yet ingenious design that really blows my mind. A full game of this would go crazy.