Here's the game that I said that I would post with the Xatu animation! Anyways, it's basically just a guessing number game, but with levels and money, and other stuff to make it more interesting. There's a tutorial to explain most of the gameplay, but if you have any questions/bugs you want to tell me, feel free to leave a comment. This game also has a save button, so you can play the game and come back later with the same stats!
BTW: the last level can be unlocked with "onemillionlevelyeah" as the code