This was fun and surprisingly relaxing to play!
I don't know if the premise of the game is based on an already existing one, but it struck me as very original and clever.
The fact that I genuinely haven't seen many games like this one yet, funnily, brings me to my only suggestion: I know you're already working on making the tutorial replayable, but I also believe it should be longer and better explained.
As a good teacher of mine always says: teach it to me like I'm 5 y.o.
I was a bit confused at first, as seems to be the case for other players, but everything got so much better as soon as I got the gist of it!
Anyways, I'm looking forward to seeing its final version. Excelent work! ❤
ps. I love that you made even numbers the unstable ones! lol Odd numbers suffer such undeserved hate around where I'm from!