Instant World Mirror
by CrabMods
Instant World Mirror lets players create temporary saved mirror worlds from their current location, for testing builds and exploring fresh terrain without touching the original save.
What it does
The mod adds four mirror items. Right-clicking a solid block with a mirror creates an entry, and once the portal has finished copying the generating area, the player steps through into the mirror world. World Reflection Mirror makes a standard temporary copy around the player for normal testing. Heaven Mirror sends the player to a temporary Creative-mode sandbox, though worlds made with it cannot create return portals, so the original entrance is used to come back.
Regenerating from the current seed, a revisit through the terrain-recreating item shows the area as it was generated, with the player's earlier edits left out. Stranded Mirror captures a named slice of the world, either globally or locally, into a cache that can be reopened in another save running the same Minecraft version. Item retention follows the world or server rules, and a copied world includes blocks, block entities, biomes, structures and heightmaps, with entities as an option, inside a configured chunk radius.
Key features
Four mirror items
World Reflection, Heaven, First Dream and Stranded Mirrors each cover a different kind of copy.
Creative sandbox copies
Heaven Mirror opens a temporary Creative-mode world for building and testing combat.
Original terrain recreation
First Dream Mirror regenerates the area from the world seed, discarding the player's earlier changes.
Reusable world slices
Stranded Mirror saves a named slice that can be reopened in another save on the same version.
Configurable copy scope
Options control the chunk radius, whether entities are copied and the terrain refresh rules.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Players who want to test builds, combat or terrain in a disposable copy of their world, and server owners who want to offer the same option to their players.
How it compares
Magic Mirror is a Forge-only mod for 1.20.1 under All rights reserved, and its source code is not open. Overworld Mirror covers Fabric, Forge and NeoForge for 1.21.1 under the Apache License 2.0. Instant World Mirror is open source under the same Apache License 2.0 and targets Forge and NeoForge for 1.20.1 and 1.21.1, with the same client and server environment.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Instant World Mirror | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-08-31 |
| Magic Mirror | Forge | 1.20.1 | Client and server | 2023-09-29 |
| Overworld Mirror | Fabric, Forge and NeoForge | 1.21.1 | Client and server | 2025-05-22 |
Questions
Does Instant World Mirror need to be installed on both sides?
Which loaders does Instant World Mirror support?
Can a Stranded Mirror capture be opened in another save?
In the catalog
Instant World Mirror is one of 8,515 World generation mods on ModsFinder, and one of 5,058 World generation mods for Forge. 32,366 mods support Minecraft 1.21.1.
More from CrabMods
Similar mods
What the author says
Explore boldly while your world stays safe. Scout a temporary copy, test builds in Creative, revisit untouched seed terrain or reopen a captured world slice from another save. ▶ Watch the trailer · 1:26 · 1080p · English captions, music and effects
Official listing
- Modrinth page
- modrinth.com/mod/instant-world-mirror
- Owner
- CrabMods
- Published
- 2026-06-05
- Updated on Modrinth
- 2026-08-31
- Facts verified
- 2026-10-15