Thanks for the feedback!
It's a little noisey on eyes with this really bright maybe just some little darker tone of green of this grid pattern be a little bit less noticeable.
My bad, there is an option to change the game palette in the pause menu but it didn't occur to me to mention it anywhere.
And very easy to keep it alive just update more and more levels and it's a good game to kill some time.
There is some refactoring to do but I'll consider the idea of making a mobile port of the game!