This is really cool! :D It would be better if you added hunger, and in peaceful mode, make sure hunger never runs out. Also you should add credits and maybe redstone and a little bit more items as well, but this is actually fire!
I can't believe how you put this on a Pico-8 software!
I'd rather also add fishing rods. (And fish) (Now idk if you already added it, because I played a bit of it.)