Man, this concept is so good! Will you add more levels in the future? And maybe also better indicators to differentiate between blocks and filtering areas?^^
Thanks for the lovely comment !
Yeah, I think I will add some content to it, as I had tons of idea for puzzles, but not enough time to implement them :p
I think this is indeed the biggest flaw of the game. I was thinking pf adding outlines, or maybe some light to differentiate them