Mirror Chunks is a server-side Paper plugin for Minecraft 1.21.x that mirrors player actions across all loaded chunks in the same world.
When a player places or breaks a block, tills dirt with a hoe, empties a water or lava bucket, presses a button or lever, or uses a spawn egg, the action is repeated at the same local chunk coordinates in every loaded chunk.
Changes are saved and applied when previously unloaded chunks load later. Each world has its own separate mirror data, so Overworld, Nether, End, and custom worlds never mix.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as MirrorChunks-1.0.2.jar — drop this file into the mods folder
- Download size: 16 KB
- Download link checked 27 Aug 2026 — working
These come from our own check of the pack file, not from the source page.