It was a bit finicky to control, but I guess you know that, since you're suggesting fullscreen mode. Fullscreen only helps a little when you got multiple screens though, and on the corner of the screen it was hard to charge up properly. Also toggling the full screen didn't work properly; had to set my browser to full screen before starting the game.
Overall it was a funny little game, with very repetitive music. It's also the first one I'm rating right now, so it's hard to compare it to other submissions at this point.