Neat idea thus far.
Some initial feedback I got:
1. Add a more crunchy sound when you make a connection
2. Backgrounds are fun, but I think the colors of the BG shouldn't overwhelm or make player lose sight of the blocks
3. I think if you had the beats go to BPM of a song or something I can see it having a chill or atmospheric kinda vibe.
Not related in anyway to mixoluma, but an example of the potential vibe I was thinking!
Anyways. Happy devving!