The modpack with all of the mods Forge Labs used in his "100 Days on a Deserted Island" video.
Forge Labs

You're stuck on a deserted island with nothing except your knowledge of nature to survive. You live in constant danger from death. You will have to watch out for dangerous predators, natural events, homeostasis, and severe weather. Build your own shelter to have it ripped apart by storms in just a few days.

Welcome, to Isla Unga Bunga. A modpack created by the youtube creator Forge Labs. This modpack is intended to be played with the map created by Forge Labs, available on his Patreon but can be played on any map of your choosing! You can experience incredible weather, hostile wildlife, poachers and much more! This modpack was created to give you that real deserted Island feel where one wrong step, and you can be bit by a venomous rattlesnake. It's not all bad though, you can build yourself an island resort to satisfy your tropical island needs! A wide variety of interesting mods aimed at creating the environment of a deserted island. Adds early game features such as no tree punching, along with mods like Animania to add new creatures to the game.

Isla Unga Bunga by Forge Labs