world 4000x4000 (13).zip is a release file of the Minecraft map Remove server lag with pregenerated worlds 4000x4000, made for Minecraft 1.21.3. It was published on November 30, 2024 and is 439 MB in size. For the full description, screenshots and every other version, visit the Remove server lag with pregenerated worlds 4000x4000 map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.