Rikigaku.zip is a release file of the Minecraft map Rikigaku: The Origins, made for Minecraft 1.12.2. It was published on April 17, 2026 and is 1.6 MB in size. For the full description, screenshots and every other version, visit the Rikigaku: The Origins map page.
How to install: Extract the .zip and move the world folder into .minecraft/saves; the map then appears in your Singleplayer list.