It's always so easy to tell when someone makes a game that they're passionate about, and it's so apparent here! You knew exactly what kind of game you wanted to make and you did it so fucking well, I absolutely love games like this they're so soothing but also intellectually stimulating which is a very tough combo
Ig one addition you could potentially make is adding an "easy" mode which essentially just shows where u are on top of the screen in terms of the grid (IE 7x5) or sumn like that so players who aren't as accustomed to this kind of game could still get a lot of enjoyment out of it in their own way. But that also could very well clash with the vision you have for this game which is the sense of isolation of being stuck in this void
Love it!