How do I install BluetherCraft (Flagz)?

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 BluetherCraft (Flagz) 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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BluetherCraft (Flagz)

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

by Ak0sBeluga · 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 →

It's my first mod, so it might be buggy!!!!!!!!!!!!!!!!!!!

I'm still learning, so please tell me if you find a bug. I will apprieciate it!

Every beta version is literally beta, which means that it's always not finished!!!

This project adds new building blocks like Bluestone, Limenite and Orange Calcite, as well as new ores such as Onyx and Cobalt. It introduces new armor and tools made from Emerald, Amethyst, Onyx and Cobalt. The update also adds a new dimension called "Bluether", two new villager professions, and craftable trophies and also Flags.

I recommend using mod Just Enough Items to see craftings.

You can make flags by crafting Flags Extension and cutting it into flags in stonecutter.

Hello I'm back in 2026! (I'm sorry but My Mod will only be supported for Neoforge 26.1.2, You can still download older versions for Forge)

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 flagz-1.12.0-forge-1.20.1.jar — drop this file into the mods folder
Download size: 1.7 MB
Download link checked 2 Oct 2026 — working

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

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All Mods for Java All Minecraft Java mods Java mods for 1.21 Java mods for 1.20