CurseForge · Minecraft mod
Harmonie's One Block
A mod that turns minecraft into the popular oneblock gamemode, with adjustable blocks (modded and not)
Quick answer
Which Harmonie's One Block release should I use?
Harmonie's One Block v1.0.3 targets 1.21.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Harmonie's One Block required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Harmonie's One Block v1.0.3 need?
Harmonie's One Block v1.0.3. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Harmonie's One Block without breaking your instance.
Built for Harmonie's One Block v1.0.3. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Harmonie's One Block v1.0.3. It targets 1.21.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 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 Harmonie's One Block v1.0.3. It opens that exact file at the source.
About this project
What does Harmonie's One Block add?
The One Block Mod
The One Block Mod is a mod based on the popular gameplay style called one block where players spawn on a single block and gether all their resources from the random blocks that generate as you infinitely break it.
The mod comes with a predefined config file, used to edit the blocks that generate, mobs that spawn, and loot that comes in chests, and how often they spawn.
The 3 main items in this mod:
OB Analyzer - right click on the "one block" to get info on blocks mined and current phase and all the possible loot
OB Maker - creates a "one block" on the interacted block
OB Remover - removes the "one block" 's magical abilities
There are a few commands that come with the mod:
/oneblock setup - spawns in the oneblock island
... More soon (including multiplayer teams, just like skyblock)
To report bugs, get help, chat, or check out my other projects, join my discord server.
https://discord.gg/XFUreAP4g2
Made with ♥️ Harmonie 🙃
Project description from CurseForge.
Pick your setup
Harmonie's One Block by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Harmonie's One Block versions and loaders
Harmonie's One Block v1.0.3
oneblock-1.0.3.jar
29 Aug 2025
Harmonie's One Block v1.0.2
oneblock-1.0.2.jar
27 Aug 2025
Harmonie's One Block v1.0.0
oneblock-1.0.0.jar
25 Aug 2025
Looking for an older file? The official CurseForge project page is in Resources.