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Flattological

Flattological

DATA PACK
Do you want a Flat world? Are you using Hydrological Mod by Apothicon? Take this Datapack!
by Lilac_Wendy
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Updated Oct 14, 2026
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Adventure Mod Support Utility
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Flattological – A Hydrological Addon Datapack

 

Flattological is a datapack addon for the Hydrological mod, designed to modify terrain generation toward flatter, more navigable landscapes while keeping the mod’s signature style and biome diversity.

This addon reshapes the wild, varied terrain of Hydrological into a more subdued, exploration- and building-friendly world, with features like:

  • Flattened terrain for easier traversal and building.
  • Dry Oceans and intermittent Rivers, giving the world a parched, ancient look while still allowing for interesting topography.
  • Fully playable and survival-ready world generation.
  • Retains Hydrological’s biome overhauls and terrain uniqueness.

 

Recommendation

Pair with a Biome Replacer mod for best biome distribution across the flattened terrain.

 

Requirements

Hydrological mod by Apothicon

And default world generation. DO NOT USE SUPERFLAT. 

 

Yes, i used Comic Sans to write this. Deal with it. 

Also, here is the Hydrological (Apothicon) Discord Link, because he basically made it, i just asked for help of "How you do this with that".

 

 

Flattological Version 1.5
MC 1.21, 1.20.1, 1.21.1
Release 2025-07-06 Get
Flattological Hydrological 0.1.zip
MC 1.20.2, 1.20.1, 1.21.1
Release 2025-07-03 Get

Requirements & install

How to use this data pack in Minecraft
Mods needed
None, works in vanilla
Minecraft
1.20.1 – 1.21.1
Install folder
saves/<world>/datapacks

How to install data packs

  1. Download the data pack .zip file (do not extract it).
  2. New world: click Data Packs on the world creation screen and drop the .zip in. Existing world: open .minecraft/saves/<world>/datapacks.
  3. Put the .zip into the datapacks folder of the world (servers: world/datapacks).
  4. Run /reload in game (or rejoin the world) and check it with /datapack list.
Browse more: Data Packs for 1.21.1 All data packs

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