i was surprised how much i've enjoyed this! really nice work - it generates some very natural-looking worlds (esp considering it's all made of blocks). i really enjoyed just walking about, looking around, collecting the glowy bits, just vibing
one thing to point out, i kinda really wish that it would spread the collectables around just a tad bit more - i didn't really have many reasons to go on exploring the outer reaches of the archipelago it generated. however, the main "island" was really cool in my world, so that's not really a major (nor a minor, really) gripe
in fact, the "main island" in my world was so cool that i even took a picture!
also, there was a tiny little floating island not far from it; idk if it generates them on purpose but it was kinda cool so i hope it does :D
the only actual (really minor!) gripe that i had was climbing uphill. it involved a lot of mashing the space button, and i don't know if that fits the chill atmosphere of it all that much ;D
all in all great job!
oh yeah, i also really liked the exposed terrain mesh generation - seeing a whole world just pop into existence bit by bit is kinda neat and almost makes you feel things