The concept for this is so cool! The way you have all the discs in a row and swap between them to play out different character animations is actually genius!
The boss has TOO much health! I would have liked to try and beat it but going back to the first phase where it's really easy again for what feels like 5 minutes every time made me not want to go back after getting to phase 3 once.
The UI at the start was quite rough to look at since it seemed to be massive and quite low resolution, but stuff seemed fine when I got into the game itself.
The actual in game art is really quite cool and I'd like to see the concept done in a bigger game with more time to polish some of the background details etc.
Nice game!