How do I install BlueMap: FTBChunks?

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. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does BlueMap: FTBChunks work with?

The listing gives Minecraft 1.21.1, 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

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BlueMap: FTBChunks

Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.

by big_energy · on CurseForge

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader NeoForge1 build
Mod loader Forge1 build

Minecraft version

Minecraft 1.21.1Newest

Minecraft 1.20.1Newest

⬇ Download for 1.21.1 · NeoForge ⬇ Download for 1.20.1 · Forge

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Server-side addon that shows FTB Chunks team claims on your BlueMap web map. See who owns what at a glance, with rich team info popups.

⚠️ 1.20.1 build requires Java 21 and BlueMap 5.12+. It will not work on Java 17 or older BlueMap versions.

What it does

Renders every claimed chunk from FTB Chunks as a colored marker on BlueMap
Both flat 2D and 3D extruded marker layers, toggleable per-map
Groups adjacent claims into single regions (no per-chunk marker spam)
Click a claim to see team info: name, color, members (online/offline), avatars, area, center coords
Live updates when chunks are claimed / unclaimed
Persists state across restarts so the map is correct immediately after server start
Works across all dimensions (Overworld, Nether, End, custom)

Commands

All under /blueftbchunks (requires permission level 2 / op):

Command	What it does
`/blueftbchunks reload`	Full memory flush, reload from disk, re-sync with FTB Chunks, re-render all markers
`/blueftbchunks data save`	Force a save of the current claim state to disk
`/blueftbchunks data init`	Clear data, reload from file, re-sync — without touching markers
`/blueftbchunks data status`	Show how many chunks / teams / dimensions are tracked, and time since last save

Config

Created on first run at config/blueftbchunks-common.toml:

# Toggle FTB Chunks integration entirely.

ftbChunksEnabled = true

# How often to re-sync with FTB Chunks (ms).

claimUpdateIntervalMs = 60000

# Wait this long after server start before first claim sync (ms).

# Increase if claims don't show up on restart.

startupDelayMs = 3000

Saved claim state lives in <world>/blueftbchunks/claim_data.json. Auto-saves every 5 minutes if dirty.

Notes

This is a fork / port of FTB Chunks for BlueMap by Fabra, originally written for NeoForge 1.21.1. This release is a backport to Forge 1.20.1 for servers on the 1.20.1 line who want claim visibility on BlueMap 5.12.
Issues / suggestions → GitHub (link below)

Credits

Fabra — original NeoForge 1.21.1 version
PiglinMine / Big_Energy — Forge 1.20.1 port
BlueColored — BlueMap
FTB Team — FTB Chunks / Teams / Library

License

MIT

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.1, 1.20.1
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 CurseForge — 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.

File checked by MCModsHub

Ships as bluemap-ftbchunks-1.0.1-1.20.1.jar — drop this file into the mods folder
Download size: 87 KB
Download link checked 3 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

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