Really fun game with a unique take on lane switching!
I liked how in the tutorial song the time stops and the game slowly introduces the mechanics.
For me, it was way too confusing to not use fixed rotation, maybe I would have enabled it by default since I had to remember to press space at the beginning of each song, hahaha!
The game offers a good variety of songs with different difficulties, I started with an Easy one, then climbed up to Normal, Hard and finally I managed to beat an Expert one. Good difficulty progression!
The songs are generally well charted and incorporate the rotating mechanic in a nice way. I also really liked that you get an indication for where the notes are going to fall so you can plan ahead.
Overall, really good job with this one, well done :)!
~kiko