CurseForge · Minecraft mod

Offline Progression

Catches up your persistent claimed chunks after the server was offline by replaying the real server tick loop, so it works generically with any mod (furnaces, crops, fluids, Create machines, and more).

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Offline Progression release should I use?

Updated 29 days ago

Latest stable file Offline Progression 1.0.0

Game version 1.20.1

Loader Fabric

Offline Progression 1.0.0 targets 1.20.1 with Fabric. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.

Where it goes

Is Offline Progression required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say

Dedicated server Source doesn’t say

Loader for this release Fabric

Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does Offline Progression 1.0.0 need?

Offline Progression 1.0.0. Change the file and its required mods may change too.

All 1 required mods have matching files

Install Fabric API first. We found matching files for this game-version and loader setup.

Fabric API Needed by Offline Progression 1.0.0

required

Matching file found Matched file: [1.20.1] Fabric API 0.92.12+1.20.1

We only count dependency files that match this setup. A file for another loader does not fill the gap.

Before you install it

Add Offline Progression without breaking your instance.

Built for Offline Progression 1.0.0. Pick another file and the loader, install side or required mods may change.

01
Stick to this file

Use Offline Progression 1.0.0. It targets 1.20.1 with Fabric; another release may have different loader, side or dependency requirements.
02
Bring the mods it needs

Install Fabric API first. We found matching files for this game-version and loader setup.
03
Put it on the correct side

The project page does not say whether this file belongs on the client, dedicated server, or both.
04
Pick the file you checked

Use the “Get this file” button beside Offline Progression 1.0.0. It opens that exact file at the source.

About this project

What does Offline Progression add?

Catch up your persistent claimed chunks after the server was offline, by replaying the real server tick loop, so any mod's blocks and entities progress correctly, not just a hardcoded list of vanilla mechanics.

What it does

When the server restarts after being offline, this mod fast-forwards time in a small set of player-claimed chunks: furnaces keep smelting, crops keep growing, fluids keep flowing, redstone keeps ticking, animals keep growing up, and any modded machine with a block entity (including Create) keeps working. It does this by actually re-running the game's own tick code, scoped to just those chunks, no per-mechanic simulation code, no guessing.

Commands

/chunkload add claims the chunk you are standing in as persistent (works in any dimension). /chunkload remove [x z] releases a claimed chunk. /chunkload list shows your claimed chunks and their center coordinates. /chunkload stats shows the duration and throughput of the last catch-up.

Gamerule

/gamerule offlineCatchupSpeed <n> multiplies how much time gets caught up (default 1).

Configuration

Editable in config/offlineprogression.json: maxCatchupDays (default 2, longest offline gap simulated) and maxCatchupWallClockSeconds (default 1200, real-time safety budget, the catch-up stops gracefully if it is exceeded).

Notes

2 persistent chunks per player by default. Overworld, Nether and End are all supported. Requires Fabric API.

Project description from CurseForge.

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