On Windows, type %appdata% in your search bar and open the .minecraft folder.
Common objectives for this map include crafting four beacons, obtaining full Netherite gear, and eventually defeating the Ender Dragon. Where to Download NiftySmith’s Rainbow Superflat
The "rainbow" effect comes from the colorful variety of blocks stacked on top of each other.
While NiftySmith popularized the concept, various creators have since released versions of the map for public use.
In a standard Superflat world, you are usually limited to grass, dirt, and bedrock. NiftySmith’s version—created for his 100 Days series —is constructed from numerous layers of progressively rarer blocks.
Once you have located a valid download for the Rainbow Superflat world, follow these steps:
You can download a version of the NiftySmith Rainbow Superflat(1.17+) map directly. This tool provides the specific command or world file needed to replicate the experience from the video.