How do I install GrieferGames CustomBlocks?

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 GrieferGames CustomBlocks work with?

The listing gives Minecraft 1.21.4, 1.21.1, 1.20.4, among others. This is the version stated by the author or source site, not something we verified ourselves.

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GrieferGames CustomBlocks

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

by GrieferGamesNW · on CurseForge

Which Minecraft do you have?

Every version of the game needs its own build. Pick yours, then download — the wrong build installs fine and then does nothing in the game. This mod is built for Fabric only.

Minecraft 1.21.4Newest
Minecraft 1.21.1
Minecraft 1.20.4
Minecraft 1.20.2
Minecraft 1.20.1

⬇ Download for 1.21.4 ⬇ Download for 1.21.1 ⬇ Download for 1.20.4 ⬇ Download for 1.20.2 ⬇ Download for 1.20.1

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 →

GrieferGames CustomBlocks — screenshot 1

GrieferGames CustomBlocks — screenshot 2

GrieferGames CustomBlocks — screenshot 3

GrieferGames CustomBlocks — screenshot 4

CustomBlocks is a mod for individual blocks with connection to the servers GrieferGames.net and BauSucht.net.

They are available here for Forge from version 1.8 and for Fabric from version 1.20 as a stand-alone mod.

The mod can be used in single player, but is optimized for use with a multiplayer server!

The Mod has the primary language German, the english language is not completed yet. The block names are almost german.

This mod enables the use of various new blocks in Minecraft. Many different new themes or additional versions of existing blocks are available.

Current overview of the blocks:

chairs & tables
kitchen furniture
garden furniture & decoration
colored beacons, spawners, dragon eggs & redstone lamps
various vooden boxes
slabs, stairs and walls with other materials
material set permafrost
material set lavastone
material set rainbow / rgb
new plant and grass sets (purple, pink, blue)
various individual decorative elements / blocks

You can use this blocks on the following multiplayer servers (almost german language):

Deutsche Beschreibung

CustomBlocks ist eine Mod für individuelle Blöcke mit Anbindung auf den Servern GrieferGames.net und BauSucht.net.

Diese stehen hier für Forge ab der Version 1.8 und für Fabric ab der Version 1.20 eigenständig als Mod zur Verfügung.

Die Mod kann im Singleplayer verwendet werden, ist jedoch auf die Nutzung mit einem kompatiblen Multiplayer-Server optimiert!

Diese Mod ermöglicht die Nutzung von diversen neuen Blöcken in Minecraft. Es stehen viele verschiedene neue Themenbereiche oder zusätzliche Versionen schon existenter Blöcke zur Verfügung.

Aktuelle Übersicht der Blöcke:

Stühle & Tische
Küchenmöbel
Gartenmöbel & -dekoration
Farbige Leuchtfeuer, Spawner, Dracheneier & Redstone-Lampen
Diverse Holzkisten
Stufen, Treppen und Mauern mit weiteren Materialien
Material-Set Permafrost
Material-Set Lavastein
Material-Set Rainbow / RGB
Neue Pflanzen- und Gras-Sets in Lila / Pink / Blau
Diverse einzelne Deko-Elemente / -Blöcke

Auf folgenden Multiplayer-Servern kannst du diese Blöcke verwenden:

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.4, 1.21.1, 1.20.4
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 MysteryBlocks_1.8.9_v1.0.0.jar — drop this file into the mods folder
Download size: 3.8 MB
Download link checked 27 Sept 2026 — working

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

Explore more

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