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One Block

Mod

One Block: Begin your Minecraft adventure in a desolate world with just one respawning block. Break it, level it up, and unlock richer rewards with each upgrade.

Type

Mod

Modrinth Downloads

333,309

Modrinth ID

necbGNtT

Last Updated

Apr 26, 2026

Description

OneBlock

Survive on a regenerating block in the void. Break it to get new resources, expand, and face random events. Supports solo and multiplayer with per-player islands.

Now supports Minecraft 1.21.11 (Fabric) and all new content.

Installation

Singleplayer:

  1. Install Fabric Loader and Fabric API.
  2. Put OneBlock-<version>.jar in your mods folder.
  3. Create a world with level-type=oneblock:oneblock.

Multiplayer:

  1. Set up a Fabric server with Fabric API and OneBlock in mods.
  2. In server.properties:
    • level-type=oneblock:oneblock
    • Add oneblock:oneblock_multiplayer to initial-enabled-packs for per-player islands.
    • (Optional) Add void/end/nether packs as needed with oneblock\:oneblock_void_nether, oneblock\:oneblock_void_end, or oneblock\:oneblock_no_island.
  3. New: Set oneblock.multiplayerIslandSpacing=<blocks> to control island distance before first world creation.

Recent Changes

  • Configurable multiplayer island spacing via server.properties (set before world creation)
  • Cross-player OneBlock fixes:
    • Owner name and break count shown when breaking another's OneBlock
    • Progression, hardness, and stats follow owner if enabled
  • Respawn bug fixed: No more "Loading terrain" hang
  • Admin panel: (Optional) Change island spacing in-game (if enabled)

Tip: If islands are too close/far, delete the world and set spacing before restarting.

For more, see the in-game admin panel or project wiki.

Compatibility

Mod Loaders

Fabric

Game Versions

1.20.4 1.20.5 1.20.6 1.21.10 1.21.11

Screenshots

Similar Mods

External Resources