Minecraft wiki entry for Surviving_in_a_single_area_indefinitely, associated text: If you're in a SkyBlock world, gathering resources is a bit different, due to limited space and resources. The biggest things are to never craft items or blocks unnecessarily, make farms for any renewable resource before using up that resource, and being careful, since a careless player could easily fall into the void in SkyBlock. There are some items and blocks that need to be acquired differently than normal Survival, however.