itch.io

Thanks a lot :) Now I cleared it. I found it interesting that there was an actual learning curve and in the last level it was more like  "okay, now I got it - just balance out one after another" which was very statisfying to do.

It has a lot of potential too. I think you could easily expand upon the idea by introducing more rules or adding  symbols or formulas and it could go quite a long way. I almost but not quite remember a game with a similar "sorting puzzle" concept that I played a few years back. Hm