I appreciate the compliment! My theory for why you couldn't launch the game is that you clicked somewhere on the page outside the game before pressing P, and so it didn't register. If that is the case, that's my bad. I blended the game's background with the page's background. If I had the time, I would've made it a button to start the game rather than a key press to avoid that along with giving it the same polish the level up screen has.