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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

399,958

Modrinth ID

necbGNtT

Last Updated

Jun 6, 2026

Description

Version 3.0.1

Target: Minecraft 26.1.2
Loaders: Fabric, Forge, NeoForge, Quilt

What we did

  • Completed true multi-loader support for Fabric, Forge, NeoForge, Quilt.
  • Stabilized worldgen + registry flow across loaders (no more late/frozen registry issues).
  • Fixed built-in pack registration so OneBlock packs appear correctly in pack screens.
  • Updated pack metadata formats for current Minecraft versions.
  • Improved datapack naming with proper friendly translated names.
  • Set OneBlock defaults: structures off in OneBlock overworld.
  • Fixed item behavior: thrown items no longer snap back after being tossed into void.
  • Improved island generation consistency (removed detached starter dirt/grass artifacts).
  • Removed wave-cleared feedback spam while keeping wave logic working.
  • Enforced falling-block config so sand/gravel are excluded when falling blocks are disabled.
  • Minor bug fixes while porting noticed a few potential bugs, fixed these.

Installation

  1. Install your loader for Minecraft 26.1.2 (Fabric / Forge / NeoForge).
  2. Put the matching OneBlock 3.0.1 jar in your mods folder.
  3. Create a world using level-type=oneblock:oneblock.
  4. <OPTIONAL> Enable or disable built-in datapacks to toggle: starting island, multiplayer mode, void nether, void end.

Datapack usage by loader (client + server)

All loaders use the same world preset:

  • level-type=oneblock:oneblock

Built-in pack meanings

  • ...multiplayer = one island slot per player
  • ...void_nether = removes Nether terrain
  • ...void_end = removes End terrain
  • ...no_island = disables initial 3x3 starter island

Fabric (and Quilt)

Singleplayer / client-hosted world

  • In Create World → Data Packs, enable:
    • oneblock:oneblock_multiplayer (optional)
    • oneblock:oneblock_void_nether (optional)
    • oneblock:oneblock_void_end (optional)
    • oneblock:oneblock_no_island (optional)

Dedicated server (server.properties)

  • Set:
    • level-type=oneblock:oneblock
    • initial-enabled-packs=vanilla,oneblock\:oneblock_multiplayer,oneblock\:oneblock_void_nether,oneblock\:oneblock_void_end,oneblock\:oneblock_no_island

Forge

Singleplayer / client-hosted world

  • In Create World → Data Packs, enable:
    • oneblock:oneblock_multiplayer (optional)
    • oneblock:oneblock_void_nether (optional)
    • oneblock:oneblock_void_end (optional)
    • oneblock:oneblock_no_island (optional)

Dedicated server (server.properties)

  • Set:
    • level-type=oneblock:oneblock
    • initial-enabled-packs=vanilla,oneblock\:oneblock_multiplayer,oneblock\:oneblock_void_nether,oneblock\:oneblock_void_end,oneblock\:oneblock_no_island

NeoForge

Singleplayer / client-hosted world

  • In Create World → Data Packs, enable these built-ins:
    • mod/oneblock:resourcepacks/oneblock_multiplayer (optional)
    • mod/oneblock:resourcepacks/oneblock_void_nether (optional)
    • mod/oneblock:resourcepacks/oneblock_void_end (optional)
    • mod/oneblock:resourcepacks/oneblock_no_island (optional)

Dedicated server (server.properties)

  • Set:
    • level-type=oneblock:oneblock
    • initial-enabled-packs=vanilla,mod/oneblock\:resourcepacks/oneblock_multiplayer,mod/oneblock\:resourcepacks/oneblock_void_nether,mod/oneblock\:resourcepacks/oneblock_void_end,mod/oneblock\:resourcepacks/oneblock_no_island

Multiplayer spacing

  • Set oneblock.multiplayerIslandSpacing=<blocks> before first world creation.
  • If spacing was wrong once, delete the world and recreate it after updating this value.

Tip

If island spacing is wrong, delete the world and recreate it after updating spacing.

Compatibility

Mod Loaders

Fabric Forge Neoforge Quilt

Game Versions

1.20.4 1.20.5 1.20.6 1.21.10 1.21.11 26.1 26.1.1 26.1.2

Screenshots

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External Resources