Minecraft Mods

Modern Beta for Fabric [1.16.5]

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b3spectacled avatar b3spectacled
Level 48 : Master Miner

A Modern Beta for Modern Minecraft!

Fabric Loader and Fabric API is required!

Welcome to Modern Beta! Modern Beta was born out of the desire to see classic old world generation in modern Minecraft, without having to sacrifice modern vanilla features or additions like the new 1.16 Nether.

This mod re-implements the Beta, Alpha, Infdev, Indev terrain generators for a nearly block-for-block perfect recreation. The mod's highlight feature is the faithful recreation of Minecraft Beta terrain gen, but updated with most modern features and structures. The Alpha, Infdev and Indev terrain generators are more lightly updated. All terrain generators offer a vanilla/modded biome option, if that's more your thing.

Comments, feedback, suggestions are welcome! More information can be found on the CurseForge page.


World Types:
  • Beta (Alpha 1.2 - Beta 1.7)
  • Skylands (Beta 1.6 - 1.8)
  • Alpha (1.1.2_01)
  • Infdev 20100415
  • Infdev 20100227
  • Indev 20100223
  • Beta Islands

World Generation:
  • Beta cave generation. Check out 404!
  • Indev cave generation.
  • Ocean biome assignment for worlds with Beta/Vanilla biomes.
  • Most modern structures/mobs included. Monuments are replaced by the Ocean Shrine in worlds with Beta/Vanilla biomes.
  • Brick pyramid and obsidian wall generation for Infdev 20100227 world type.
  • Noise-based tree generation ported from Beta/Alpha/Infdev
  • Vanilla biome generation for Beta, Alpha, and Infdev worlds. Compatible with Fabric biome mods!

Rendering Options:
  • Clientside Beta sky colors. Enjoy those deep blue and purple skies!
  • Clientside Beta biome colors. Smooth biome color transitions, variation in tall grass coloration!
  • Clientside option to turn off sunset colors.
  • Clientside option to render game version in top-left corner of window.

Other Features:
  • Serverside support, clients don't need the mod to join.

For the authentic Beta look, try the following!
  • Soaring Clouds: Set cloud height to 108!
  • Golden Days: My favorite classic Minecraft resource pack. (I recommend deleting the custom colormaps for accurate biome colors.)
  • Colormatic: For custom colors and textures used by the above resource pack.
  • Sodium: Just nice to have!
  • Custom Fog: For closer fog and that surreal atmosphere!
  • Custom Stars: Also by me, restore the classic big stars with this mod.
  • Custom Void: Also by me, restore the old blue void with this mod.
  • Custom Spawns: Also be me, restore old passive mob spawning with this mod.
  • Damage Tilt: Restore directional damage tilts.


Please see the Modern Beta wiki for more information on configuring rendering and generation options for the mod's various world types.

Some useful links:

Server Configuration

Please see the link for instructions on configuring Modern Beta for servers. Modern Beta only needs to be placed server side!


  • Thanks to SuperCoder7979, whose work helped me understand Fabric, particularly in the area of worldgen, and for allowing me to use their GoVote and mixin code.
  • Thanks to MrBurger, Ted80, Minecrell, and SkyDeckAGoGo, whose lovely mods and data packs inspired me to create Modern Beta.
  • Thanks to Arenovas, for Indev 20100223 mappings, and ClassiCube, for documenting the Minecraft Classic generation algorithm and providing additional implementation details.
  • Thanks to Amb0s and Paulevs for their assistance in porting the Infdev 20100415 terrain generator and allowing me to reference their ports.
  • Thanks to comp500 for contributing a crash fix.
CreditSuperCoder7979, MrBurger, Ted80, Minecrell, SkyDeckAGoGo, Arenovas, ClassiCube, Amb0s, Paulevs, comp500
Progress95% complete
Game VersionMinecraft 1.16.5

2 Update Logs

Modern Beta v1.1.0 : by b3spectacled 04/11/2021 3:54:33 amApr 11th, 2021

NOTE: This update brings significant internal changes. Please back up your world before updating if you would like to try this version. Worlds made on versions 1.0.0+ should still work fine.

* Major GUI and Biome provider changes/improvements/fixes:
  • Reworked World Customization GUI, all Modern Beta world types stuffed into single MC World Type, titled "Modern Beta".
  • Players are no longer restricted to Sky, Classic, Winter, and Plus biome presets. These presets have been removed and replaced with a Single biome option; for any world type, you can now pick any biome though the Buffet biome customization interface.
  • Players can now customize which biomes generate for the Beta biome type. You can pick any biome through the Buffet biome customization interface to generate in place of a particular Beta biome.
  • Players can now customize land and ocean biome sizes for the Vanilla biome type.
  • Players can now pick any biome type for Indev worlds. Indev themes still apply for various time/weather effects. Snowy Indev theme has been removed.
* Configuration has now been split into multiple files under config/modern_beta.
* Added a new custom world type: Beta Islands
  • Based on The End terrain generation, accurate Beta terrain gen but generating as large island chains separated by expansive oceans!
  • Players start on a medium-sized island(s) centered on 0/0. Go out far enough and you'll discover large island chains.
  • Players can adjust various settings governing the generation of the center and outer islands, see below:
* Added several settings for the Beta Islands world type:
  • centerOceanLerpDistance: Length of transition from center ocean to outer islands in chunks.
  • centerOceanRadius: Center ocean radius in chunks.
  • centerIslandFalloff: Controls how quickly the center island transitions into ocean, effectively controlling center island size.
  • outerIslandNoiseScale: Controls outer island/ocean size. Higher values means more Beta terrain will be exposed and larger oceans.
  • outerIslandNoiseOffset: Controls the proportion of the outer islands/ocean. Higher values means more Beta terrain will be exposed.
* Improved surface generation for certain vanilla biomes, notably Mountain and Badlands biomes.
* Adjusted tall grass density to more accurately reflect Beta 1.7.3 generation.
* Adjusted mob spawns for most biomes, removed fish from non-ocean biomes.
* Reworked how features generate on Indev worlds; Indev Edge biomes no longer generate.

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01/02/2022 3:47 pm
Level 25 : Expert Modder
0nelife avatar
goes well with my alpha Minecraft texturepack :)
06/02/2021 4:16 amhistory
Level 1 : New Miner
PierraNova avatar
Sorry to bother, how would I go about changing the sky colour with Colormatic in the Plains biome, and changing the grass to be slightly more vibrant? I've tried using your mod's clientside rendering options with and without Golden Days and whilst quite close to what I'm looking for, it's not quite vibrant enough.
06/02/2021 2:47 pm
Level 48 : Master Miner
b3spectacled avatar
I would modify the color maps themselves in an external photoediting program like Photoshop or Paint.net. The Beta sky colors are derived from the temperature noise map and are not modifiable, but you can turn that rendering option off and have it fall back to the sky color map in the resource pack.
04/12/2021 11:51 am
Level 39 : Artisan Sweetheart
ThatRetsukoFan avatar
I love this.
02/12/2021 11:23 am
Level 34 : Artisan Creeper
ObenCraft avatar
*sad forge player noises*
01/02/2022 3:47 pm
Level 25 : Expert Modder
0nelife avatar
get fabric too (i use both)
02/12/2021 4:39 am
Level 20 : Expert Modder
UXT1 avatar
02/12/2021 1:21 pm
Level 48 : Master Miner
b3spectacled avatar
Sorry, I won't be doing a Forge version.
02/13/2021 6:02 am
Level 20 : Expert Modder
UXT1 avatar
why why you wont ı mıss beta days plzzz
02/05/2021 12:09 pm
Level 1 : New Miner
Dream_official avatar
so are the farlands included
Planet Minecraft


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