I got 31! Very fun, very addictive, and very beautiful to look at and hear!
If I had to improve it I'd work on progressing up to the initials rules. Perhaps I'd start with one circle, then the other, then both but there's a wall in between them. As it stands it's very hard out the gate, which could lead to people quitting!
Does it remind you of Beat Saber?
Check out my etry for something more calm :P