I quite like the idea here, but my fingers hurt before I got 'to the point', I'm afraid. I might suggest adding 'keyboard mashing' or 'hold down the key' options, or something like that. I sure would have liked to see what happens when everything is fully /spoiler/. (edit: Oh, and I gave you more points on 'theme' than what I saw, I'm assuming there's some kind of firework/bomb as the climax)
Still, I'm glad I took time to experience at least part of it. Congrats on the submission, good luck