SkyBlock Advanced is an interesting sky block survival map where you will have several islands with resources at your disposal. Its main feature is the absence of an abyss, tearing down you will fall into the water, from which you can always rise back.
How to install SkyBlock Advanced map
Download the archive.
Unzip its contents into the ‘saves’ folder located in the game folder.
Launch Minecraft, start a game, choosing the world SkyBlock Advanced.