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Modern Beta Forge

Generate Beta, Alpha, and Infdev terrain for Minecraft 1.12.2.
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Updated Jan 20, 2023
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A port of Modern Beta Fabric for Forge 1.12.2!

Enjoy all the toggle-able features of Minecraft 1.12.2 with the faithful re-implementation of the Beta, Alpha, Infdev, and Indev terrain generators. Originally done for a friend's server but now expanded on to match the original Fabric version in feature parity plus additional improvements/fixes. Please don't expect updates beyond bugfixes and minor improvements if I feel like it.

Features

  • Terrain generators:
    • Beta 1.7.3
    • Alpha 1.1.2_01
    • Infdev 20100611
    • Infdev 20100420
    • Infdev 20100415
    • Infdev 20100227
    • Indev 20100223
    • Classic 0.0.23a
    • Beta Skylands
    • Pocket Edition v0.6.0
    • Release (Vanilla) 1.12.2
    • The End
  • Biome generators:
    • Beta 1.7.3
    • Pocket Edition v0.6.0 (with Beta biomes)
    • Single/Fixed
    • Release (Vanilla) 1.12.2 with biome mod support
    • Biomes O' Plenty (when Biomes O' Plenty mod is installed)
  • Mix and match terrain and biome generators.
  • Classic Nether terrain generation.
  • Options to substitute Beta biomes with other vanilla or mod biomes for the Beta biome generator.
  • In-game world generation customization, based on the vanilla Customized world type.
  • Shareable and built-in world generation presets, like with the vanilla Customized world type.
  • Toggleable modern structures and decoration features.
  • Accurate Beta sky and Beta biome colors when playing in SP.
  • Adjustable cloud height for Modern Beta worlds, y108 by default.
  • Modified player spawns that place players on beaches like in classic versions.
  • In-game terrain/biome generation previewer before world creation.
  • Commands for inspecting and editing generator settings in-game.

Server Usage

The following should be done in the server.properties file:

  • Set the 'levelType' field to 'modernbeta', without the quotes.
  • Set generation options in the 'generator-settings' field. You can create the generator options string using the in-game GUI.

Mod Support

Additional support is provided for these mods:

  • Biomes O' Plenty
  • Buildcraft Energy
  • Dynamic Trees
  • Future MC
  • Millénaire - Download config files here
  • Thaumcraft
  • Yung's Better Mineshafts

These mods are known to cause issues:

  • Galacticraft - Sky/Fog visual features will be disabled when this is installed.
  • Muon - This mod is incompatible.
  • Cave Generator - If you are experiencing tick/entity lag, please disable all biome replacement options to improve performance.

Add-ons

Modern Beta supports custom add-ons. Here are a few:

Preset Note

For accurate generation for non-Beta chunk sources, please select from the built-in presets first; simply changing the chunk source will not accordingly update the needed noise settings.

Why no Forge version for current versions of Minecraft?

I have no plans on working on current versions of Minecraft at the moment. Please take a look at Moderner Beta for an alternative!

Credits

Thanks to mrburgerUS, SuperCoder7979, Arenovas, Amb0s, PaulEvs, comp500, and the folks behind RetroMCP.

Modern Beta 1.12.2-1.9.5.1
MC Client, Forge, Server, 1.12.2
Release 2026-07-02 Get
Modern Beta 1.12.2-1.9.5.0
MC Client, Forge, Server, 1.12.2
Release 2026-05-18 Get
Modern Beta 1.12.2-1.9.4.0
MC Client, Forge, Server, 1.12.2
Release 2026-05-02 Get
Modern Beta 1.12.2-1.9.3.1
MC Client, Forge, Server, 1.12.2
Release 2026-04-10 Get
Modern Beta 1.12.2-1.9.3.0
MC Client, Forge, Server, 1.12.2
Release 2026-04-04 Get
Modern Beta 1.12.2-1.9.2.3
MC Client, Forge, Server, 1.12.2
Release 2026-03-31 Get
Modern Beta 1.12.2-1.9.2.2
MC Client, Forge, Server, 1.12.2
Release 2026-03-16 Get
Modern Beta 1.12.2-1.9.2.1
MC Client, Forge, Server, 1.12.2
Release 2026-02-24 Get
Modern Beta 1.12.2-1.9.2.0
MC Client, Forge, Server, 1.12.2
Release 2026-02-17 Get
Modern Beta 1.12.2-1.9.1.0
MC Client, Forge, Server, 1.12.2
Release 2026-01-29 Get
Modern Beta 1.12.2-1.9.0.0
MC Client, Forge, Server, 1.12.2
Release 2025-11-24 Get
Modern Beta 1.12.2-1.8.5.0
MC Client, Forge, Server, 1.12.2
Release 2025-10-31 Get
Modern Beta 1.12.2-1.8.4.0
MC Client, Forge, Server, 1.12.2
Release 2025-09-18 Get
Modern Beta 1.12.2-1.8.3.0
MC Client, Forge, Server, 1.12.2
Release 2025-09-13 Get
Modern Beta 1.12.2-1.8.3.1
MC Client, Forge, Server, 1.12.2
Release 2025-09-13 Get
Modern Beta 1.12.2-1.8.2.0
MC Client, Forge, Server, 1.12.2
Release 2025-09-04 Get
Modern Beta 1.12.2-1.8.2.1
MC Client, Forge, Server, 1.12.2
Release 2025-09-04 Get
Modern Beta 1.12.2-1.8.1.0
MC Client, Forge, Server, 1.12.2
Release 2025-08-31 Get
Modern Beta 1.12.2-1.8.0.0
MC Client, Forge, Server, 1.12.2
Release 2025-08-24 Get
Modern Beta 1.12.2-1.7.2.2
MC Client, Forge, Server, 1.12.2
Release 2025-07-18 Get
Modern Beta 1.12.2-1.7.2.0
MC Client, Forge, Server, 1.12.2
Release 2025-06-23 Get
Modern Beta 1.12.2-1.7.2.1
MC Client, Forge, Server, 1.12.2
Release 2025-06-23 Get
Modern Beta 1.12.2-1.7.1.0
MC Client, Forge, Server, 1.12.2
Release 2025-05-31 Get
Modern Beta 1.12.2-1.7.0.1
MC Client, Forge, Server, 1.12.2
Release 2025-05-20 Get
Modern Beta 1.12.2-1.7.0.0
MC Client, Forge, Server, 1.12.2
Release 2025-04-30 Get
Modern Beta 1.12.2-1.6.1.1
MC Client, Forge, Server, 1.12.2
Release 2025-04-13 Get
Modern Beta 1.12.2-1.6.1.0
MC Client, Forge, Server, 1.12.2
Release 2025-03-21 Get
Modern Beta 1.12.2-1.6.0.1
MC Client, Forge, Server, 1.12.2
Release 2025-03-06 Get
Modern Beta 1.12.2-1.6.0.0
MC Client, Forge, Server, 1.12.2
Release 2025-03-04 Get
Modern Beta 1.12.2-1.5.3.2
MC Client, Forge, Server, 1.12.2
Release 2025-02-11 Get
Modern Beta 1.12.2-1.5.3.1
MC Client, Forge, Server, 1.12.2
Release 2025-02-08 Get
Modern Beta 1.12.2-1.5.3.0
MC Client, Forge, Server, 1.12.2
Release 2025-02-06 Get
Modern Beta 1.12.2-1.5.2.0
MC Client, Forge, Server, 1.12.2
Release 2025-02-03 Get
Modern Beta 1.12.2-1.5.1.1
MC Client, Forge, Server, 1.12.2
Release 2025-01-27 Get
Modern Beta 1.12.2-1.5.1.0
MC Client, Forge, Server, 1.12.2
Release 2025-01-26 Get
Modern Beta 1.12.2-1.5.0.0
MC Client, Forge, Server, 1.12.2
Release 2025-01-20 Get
Modern Beta 1.12.2-1.5.0.1
MC Client, Forge, Server, 1.12.2
Release 2025-01-20 Get
Modern Beta 1.12.2-1.4.1.0
MC Client, Forge, Server, 1.12.2
Release 2025-01-07 Get
Modern Beta 1.12.2-1.4.0.0
MC Client, Forge, Server, 1.12.2
Release 2024-12-31 Get
Modern Beta 1.12.2-1.3.3.0
MC Client, Forge, Server, 1.12.2
Release 2024-12-15 Get
Modern Beta 1.12.2-1.3.2.0
MC Client, Forge, Server, 1.12.2
Release 2024-12-11 Get
Modern Beta 1.12.2-1.3.1.0
MC Client, Forge, Server, 1.12.2
Release 2024-12-04 Get
Modern Beta 1.12.2-1.3.0.0
MC Client, Forge, Server, 1.12.2
Release 2024-11-23 Get
Modern Beta 1.12.2-1.2.2.3
MC Client, Forge, Server, 1.12.2
Release 2024-11-13 Get
Modern Beta 1.12.2-1.2.2.2
MC Client, Forge, Server, 1.12.2
Release 2024-11-11 Get
Modern Beta 1.12.2-1.2.2.1
MC Client, Forge, Server, 1.12.2
Release 2024-11-10 Get
Modern Beta 1.12.2-1.2.2.0
MC Client, Forge, Server, 1.12.2
Release 2024-11-09 Get
Modern Beta 1.12.2-1.2.1.0
MC Client, Forge, Server, 1.12.2
Release 2024-10-31 Get
Modern Beta 1.12.2-1.2.0.0
MC Client, Forge, Server, 1.12.2
Release 2024-10-27 Get
Modern Beta 1.12.2-1.1.0.0
MC Client, Forge, Server, 1.12.2
Release 2024-10-20 Get

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