A tutorial would have been nice for people like me who have never played 2048 before, though I can accept that I am probably not the target audience. Had to look up on Youtube how you play that game.
Explaining the controls in-game would have been nice too, since I initially tried to use my mouse only to later realize I should have used the arrow keys.
I'm not sure why you used AI for the cover image, when the rest of it has such striking and eye-catching choices in terms of colors and simple shapes. Just going with that for the cover would honestly have looked much better.
As for the preservation aspect, why not just put the game's web-build (the file you uploaded) in a zip file and offer it up for download right here? Would be an easy problem solved right there.
Still, while I'm probably not the target audience, I did overall have fun with the game.