It's worth separating your source from the download to make it a smaller file.
You may also wanna opt out of art since you used external assets.

It seems like an infinite game, which is fine, except it doesn't track how long I've been playing, and doesn't give me any kind of score which isn't really a good way to keep folks interested since they have no numbers they can compare runs against. I'd recommend adding those in, and maybe something to do with your [Z] and [X] Keys.