Thank you! I totally agree about having a third mechanic. I experimented with having a shield that used more energy, but it felt a little redundant with the lasers. I should have kept it and had it unlock after a certain number of waves or amount of gold collected. It would be useful because the game gets really hard after a few waves :-P
The gravity switching mechanic is effective (and challenging) and I really like how it's synced with the music. The level design is good too--the timing challenges get harder and require more precision. Very nice work.
