The game was unplayable. Even after checking the controls a few times, I couldn't get it to do anything but scroll down (once) and make a fireball appear (once). The music doesn't loop and the game is stuck in a 64x64 window.
Zero sound design is a bit disappointing, but the visuals are well thought out. I do wish there was a tutorial and a replay button (as everyone else has mentioned) but overall, a very fun little strategy game! Could even be a mobile title with a little more development.