This is a great game, took me a bit to find out that you were supposed to destroy the building lol.
The movement is good, the art could be improved but i think it looks good enough. Music and sfx is nice. I think builidng a more juicy reward system when you land on the buildings and shoot out fireballs would be super nice since that's the only thing you're doing in the game.
Overall, great game, I like it a lot :)