Fun idea, I really like the movement of the game, it took a sec to figure out, but once I did I was really drifting around. My only problem with the game, and its very likely a personal error, but I couldn't figure out how to spend my experience on upgrades. Even in the menu it wasn't going up. Anyway, great theme implementation, the graphics were nice, and the movement was very enjoyable. Good job on making this:)