The change from colors to elements definitely makes the game a lot more intuitive. Unfortunately it makes it a bit too easy to remember so I ended up sort of not caring about elements since it was fairly trivial to set it up so that the end result was the correct element. Then the game basically became a find the right numbers that add up to the sum you want affair which wasn't too exciting.
3 years ago(+1)
I played a bit more to about level 7 into the fourth area. The dark element definitely helps in making the game more varied. The light element on the other hand didn't really do much for me but it wasn't a bad inclusion either. I would suggest maybe shortening the tutorial since the relationship between the three basic elements is relatively straightforward (and even displayed at all times). I would also suggest the restart button be always visible since sometimes you know you already messed up and it's kind of annoying to have to start spamming moves to get the prompt or exit out and go back in.
Lastly, I exited on level 7 (I think?) and the map looked like this where 7 is missing (8 was not the level I exited out of):
I am definitely planning on adding an undo button, which should make it easier to clean up mistakes throughout a level and the level 7 might be a bug, I'll look into that. But it would seem you're one of the players that just clicks very well with the mechanics. Most people I've heard from have taken the tutorial to the full length. That's always hard to balance though, so I suppose that makes sense.
Thanks again for your feedback and insight, really appreciate it!