Super addictive. We both made games where it speeds up with music and gets chaotic, nice!
I have one note on my experience-- just personal opinion, not docking points at all --I think in games where you are using WASD, it can help to have directional indicators on them, otherwise I have to do a mental mapping of "ok, D, D is on the right, index finger, press." That might just be me :)
The aesthetics are so cute and well coordinated with eachother and the music and sfx all work together really nice. Controls felt tight once I got the hang of them. I got to 45 and it definitely got out of hand XD