EPILEPSY WARNING: By playing it, I'm pretty sure this isn't an epilepsy-friendly project. You have been warned. Double Click the Flag. Have you ever been told something along the lines of, "Oh, you're a mathematician? Name every number."? Struggling to think of the answer to that question, a way of disproving your cowardice and proving to the world that you can do anything? Just send them this project. Unless they have epilepsy. Don't send this to epileptic people.
Credit to scratch for all the stuff. I might add more to it occasionally. Currently it's interesting up until quintillion.