Enjoyed playing this - it's such a playable game! Solid arcade action...
I liked the concept of constant progression through replaying, that worked really well!
One think I'd suggest is to have an in game cursor so you know where you're targeting the fireball better... I was playing full screen and I could hardly see the mouse cursor so didn't know where I was aiming.
All-in-all, a really cool and playable game - great job!