
Modrinth · Minecraft mod
Flat Dimensions
Datapack that caps the world terrain at sea-level for the Overworld, Nether, and End.
Quick answer
Which Flat Dimensions release should I use?
Flat Dimensions 1.0.1+mod targets 1.20, 1.20.1, 1.20.2 with Fabric, Forge, NeoForge. Installation on the client is optional. Installation on the dedicated server is optional. No extra mods listed for this file.
Where it goes
Is Flat Dimensions required on the client, server, or both?
Installation on the client is optional. Installation on the dedicated server is optional.
The source marks this as usable on both the client and server.
What else does Flat Dimensions 1.0.1+mod need?
1.0.1+mod. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Flat Dimensions without breaking your instance.
Built for Flat Dimensions 1.0.1+mod. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.0.1+mod. It targets 1.20, 1.20.1, 1.20.2 with Fabric, Forge, NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
Installation on the client is optional. Installation on the dedicated server is optional.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.0.1+mod. It opens that exact file at the source.
About this project
What does Flat Dimensions add?
Flat Dimensions
This is a datapack that overrides the default world generation to cap the terrain at sea-level for the Overworld, Nether, and End, so its kind of like having the "Overworld" Superflat preset applied to all dimensions, with all biomes and structures. Except it also has caves, oceans, rivers, and ponds.
"Aw I wish it was just like the 'Overworld' Superflat Preset, where it doesn't have caves..."
Check out my No Caves pack! It now has support for this pack, meaning you can have a caveless overworld and nether for a true superflat experience!
Please note when using this, just add the datapack on the world creation screen and create a world like normal. You should not to use the Superflat Preset.
Why does it replace the default overworld, and why can't it use a preset?
Datapacks allow creators to edit many things in Minecraft, but some things are hardcoded, meaning they require a mod to change. Datapacks do allow for custom superflat presets, but unfortunately they only allow for single-biome worlds. Datapacks also allow for custom world presets, but unfortunately, any changes outside of the terrain must be done globally, meaning anytime I need to change the structure or feature generation to get it to fit, it would change it for all presets. If I made a preset and someone was using the mod version of this pack, then they could easily be unknowingly altering vanilla worldgen!Superflat Version
If you wish it was more like the Classic Superflat with 4 blocks of terrain...
Checkout Superflat Dimensions
Compatibility Notes:
This pack should work with biome mods (although there may be some weirdness, depending on how the mod was made).
If you've never used terrain mods together, you should know that they generally override each other. The same case is for this mod.
Generation Notes:
Pre-1.21
- Nether Fossils will spawn below lava in the Nether, for technical reasons, a solution to this wasn't available until 1.21.
Project description from Modrinth.
Pick your setup
Flat Dimensions by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.9
5 loader builds1.21.8
5 loader builds1.21.7
5 loader builds1.21.6
5 loader builds1.21.5
5 loader builds1.21.4
5 loader builds1.21.3
5 loader builds1.21.2
5 loader builds1.21.1
5 loader builds1.21
5 loader builds1.20.6
5 loader buildsShowing the newest 12 of 18 game versions. Older files are in the list below.
Check the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Flat Dimensions versions and loaders
1.0.1+mod
flat-dimensions-1.0.1.jar
17 Oct 2025
1.0.1
Flat_Dimensions_1.0.1.zip
17 Oct 2025
1.0.0+mod
flat-dimensions-1.0.0.jar
4 Aug 2025
1.0.0
Flat_Dimensions_1.0.0.zip
4 Aug 2025
Looking for an older file? The official Modrinth project page is in Resources.