Source-checkedWorld generation

Modern Beta Forge

by b3spectacled · for Minecraft

Generate Beta, Alpha, Infdev, and Indev terrain for Minecraft 1.12.2

14KDownloads
18d agoLast updated
MITLicense
ForgeLoaders

About Modern Beta Forge

From Modrinth

Generate Beta, Alpha, Infdev, and Indev terrain for Minecraft 1.12.2

Modern Beta Forge

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. Optional in MP.
  • 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.
  • Support for extended height limits when using Depths Update or Cubic Chunks.

Server Usage

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

  • Set the 'levelType' field to 'modernbeta' (or 'modernbetacubic' if using Cubic Chunks), 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
  • Cubic Chunks - Supported for height extension.
  • Depths Update - Supported for height extension.
  • Dynamic Trees
  • Future MC
  • Millénaire - Download config files here
  • Oceanic Expanse
  • 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:

Other recommended mods:

  • Smooth Menus - Increases frame rate for in-game menus, including the customization GUIs.
  • Celeritas

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. The Minecraft Wiki was sourced to provide some descriptions in this mod.

Highlights

From source data

Game versions

Built for Minecraft 1.12.2.

Loaders

Runs on Forge.

Footprint

Rated a light load on a server.

Modern Beta Forge on Nxeon

From our catalogue
One-click install
Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
Server side
Required on the server
Server type needed
Forge
Server load
light
Smallest plan we suggest
Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
Latest build
1.12.2-1.10.3.0, released 2026-10-17

Game versions by loader

LoaderGame versionsNewest
Forge1.12.21.12.2

From 6 recorded builds of Modern Beta Forge.

Recent builds

BuildReleasedGame versionsLoaders
1.12.2-1.10.3.02026-10-171.12.2Forge
1.12.2-1.10.2.22026-09-271.12.2Forge
1.12.2-1.10.2.12026-09-271.12.2Forge
1.12.2-1.10.2.02026-09-181.12.2Forge
1.12.2-1.10.1.02026-09-131.12.2Forge
1.12.2-1.10.0.02026-09-081.12.2Forge

Dependencies

  • Required: modrinth project G1ckZuWK (modrinth, not in our catalogue)

Declared by the newest build that lists any. Required ones are installed with it on one-click installs.

Run Modern Beta Forge on a Minecraft server

Pick a server or deploy a new one above; it is installed in one click.

What kind of mod it is

From the catalog
Listed on Modrinth as “Mods”

World generation

Changes or adds to how new terrain, biomes and structures are created.

Runs on your server

From source side support

Modrinth lists Modern Beta Forge as required on the server. Check its Modrinth page to see whether players need it too.

Compatibility

Game
Minecraft
Loaders
Forge
Runs on
Serverrequired on the server
Game versions
1.12.2

Verified at the source

  • ✓ModrinthOfficial listing, checked 2026-10-18Open ↗
  • ✓Authorb3spectacled, as published on Modrinth
  • ✓LicenseMITFree

Modern Beta Forge, answered

Generated from the mod’s own source data.

Do my players need to install Modern Beta Forge?

Modrinth lists Modern Beta Forge as required on the server. Check its Modrinth page to see whether players need it too.

Which loaders does it support?

Forge.

Is it free?

Yes. Modern Beta Forge is free to download from Modrinth. Its license is MIT.

How do I add it to my Nxeon server?

Use “Add to a server” on this page, or open NxLabs from your dashboard. We install it, restart your server and switch it on.

NxLabs

Run Modern Beta Forge on a Minecraft server.

Deploy in about a minute from $4.99 a month, then add Modern Beta Forge in one click.