I love the improvisation in the sound effect haha. Honestly this is a pretty solid game. Personally I like to focus on the design more than the aesthetic and I totally get what you're trying to do with the waves. It really captures the unique feel of a boat riding around the vortex. I think it'd be even more fun if during some boss attacks, the waves would speed up or become more intense to capture the desperateness of the cat escaping. Overall I love the vortex movement feature.