Source-checkedMaps & scenarios

World Memory

by Azrael_Maxwell · for Minecraft

This mods add a "git like" functionnality to minecraft maps. You can undo anything that happened on a map and select a certain timestamp or reset the chunk to the seed state (without restarting the game).

79Downloads
6 mo agoLast updated
MITLicense
FabricLoaders

About World Memory

From Modrinth

This mods add a "git like" functionnality to minecraft maps. You can undo anything that happened on a map and select a certain timestamp or reset the chunk to the seed state (without restarting the game).

World Memory it is a prototype of Backup Optimization mod, It add a way to revert back the chunks where you stand and elsewhere to a previous state without having to do backups or restarting a server simply "rewinding time" to a previous iteration of the chunks in a single click.

All chunks are saved in plained strings hashed inside the world file hence reducing the space needed for a normal back up file.

What is saved by the mod ?

  • States before server crash
  • States before corrupted chunks ( Not fully tested but working )
  • States before and after explosion with an automatic rewind in case of crash
  • NBT data of Mobs that has extra data ( Wolves, villager, horses, renamed entity etc... )
  • NBT data stored in blocks ( bed, chest, signs, red stone etc )

Any and all modifications is recorded (normally i hope 🙏) and can be rewinded.

What is not saved and will in the future be saved ?

Spoiler

( yaya i know i misspelled future and i added the "E" )

  • Player Inventories

So far only mob/entities with inventory are saved and can be restored. As for player it is currently not yet implemented given it may cause duplication dupes ( since a player CAN respawn ) for now this feature is "here" but only work for (normally) Hardcore Worlds

  • External mods in general

Some future proofing was done already if a mod adds some tnt just with more power the mod can revert it back but what i like to call "special cases" are not rewindable yet ( custom explosions etc )

The mod is FOR NOW Vanilla+ Intended as a way for server owners to rewind griefed chunks and areas.

Bear in mind that this is a prototype and probably not as optimized as i wish it be. Any issue please report it on my discord or via DM's thank you so much.

Video Dev Testing by yours truly:

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Short Q&A:

Q1: Will there be a version for NeoForge

A: Yes. But i'm alone so it will take time given i have 0 knowledge on Neoforge yet. And no unfortunately no Forge version in mind but it is slightly considered.

Q2: Will there be a [Insert obscure minecraft version] of the mod ?

A: 1.20.1 and higher take it or leave it. Yall can fork it and backport it i simply ask for my name in little letters at the bottom.

Q3: Will there be some version that may be skipped ?

A: Beside what's said in the previous question i will maybe make a 1.19.2 version and also if i find a version too exhausting ( According to modding summary 1.21 is a pain ) i will skip it. Keep in mind i am alone at the moment i am no team leader and i prefer it that way for now.

Q4: Does this mod have an extra scope ?

A: Yes. This mod is simply an happy coïncidence of me thinking of ways to make time travel possible in minecraft and has such will in the futur be more than simply a "back up mod"

Highlights

From source data

Game versions

Built for Minecraft 1.20.1.

Loaders

Runs on Fabric.

Footprint

Rated a light load on a server.

World Memory on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Required on the server
Server type needed
Fabric
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
0.2a-1.20.1 (alpha), released 2026-05-17

Game versions by loader

LoaderGame versionsNewest
Fabric1.20.11.20.1

From 2 recorded builds of World Memory.

Recent builds

BuildReleasedGame versionsLoaders
0.2a-1.20.1 alpha2026-05-171.20.1Fabric
0.1-1.20.1-fabric2026-04-291.20.1Fabric

Run World Memory on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

Maps & scenarios

Custom maps, arenas and scenarios to play on.

Runs on your server

From source side support

Modrinth lists World Memory as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
Fabric
Runs on
Serverrequired on the server
Game versions
1.20.1

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-03Open ↗
  • ✓AuthorAzrael_Maxwell, as published on Modrinth
  • ✓LicenseMITFree

World Memory, answered

Generated from the mod’s own source data.

Do my players need to install World Memory?

Modrinth lists World Memory as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Fabric.

Is it free?

Yes. World Memory is free to download from Modrinth. Its license is MIT.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run World Memory on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add World Memory in one click.