CurseForge · Minecraft mod
OneBlock Mod [One Block]
Your entire world begins with a single regenerating block.
Quick answer
Which OneBlock Mod [One Block] release should I use?
OneBlock Mod [One Block] One Block-v1.0 targets 1.21, 1.21.1-Snapshot, 1.21.1 with Fabric, Quilt. 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 OneBlock Mod [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 OneBlock Mod [One Block] One Block-v1.0 need?
One Block-v1.0. 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 OneBlock Mod [One Block] without breaking your instance.
Built for OneBlock Mod [One Block] One Block-v1.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use One Block-v1.0. It targets 1.21, 1.21.1-Snapshot, 1.21.1 with Fabric, Quilt; 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 One Block-v1.0. It opens that exact file at the source.
About this project
What does OneBlock Mod [One Block] add?
Your entire world begins with a single regenerating block.
You spawn on a single, infinitely regenerating block floating in the void.
By continuously mining it, you'll gather building materials, valuable items, encounter mobs and monster parties!
You'll progress through unique phases, each with its own theme, such as Plains, Forest, Deep Ocean, and even the Nether and The End.
Currently Requires the One Block Datapack !!!
This mod also fixes the bottom half dark sky horizon glitch
and disables experimental world features warnings.
Feel free to share any suggestions or report any bugs or glitches you find!
PERFORMANCE
It should be the most performant experience ever! it all starts with only One Block.
From that single block, you begin to shape an entire world.
PLANNED FEATURES:
1 time Monster Party loss drawback + 1 life in multiplayer, second chance in solo
Non-collidable blocks and half-blocks will spawn on the One Block.
Giants, illusioners, still ghasts and more mobs
Monster party revamp
Phase 11: The Deep Dark
Villagers revamp
Wandering Trader revamp
Nether revamp
End revamp
Treasure events found in One Block chests
Running blocks?
Random? events
Custom One Block boss
One Block minion
Players will be able to change biomes
Special Trial Chambers phase unlocked by a trial key or trial spawners
Traps to the above
One Block fire ritual?
Personal One Blocks
Elite mobs (rare mobs with modifiers and better rewards)
Make end portal frames mineable
Update to future versions
Phase 12: Sulfur Caves
Ender Dragon revamp + overworld encounter in phase 9
+++
Project description from CurseForge.
Pick your setup
OneBlock Mod [One Block] by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.1
2 loader builds1.21-Snapshot
2 loader builds1.21
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
OneBlock Mod [One Block] versions and loaders
One Block-v1.0
one-block.jar
1 Oct 2026
Looking for an older file? The official CurseForge project page is in Resources.