Flat Bedrock Mod Wiki
Flat Bedrock Mod Wiki & Guide
wiki.9minecraft.net/flat-bedrock-mod/
Flat Bedrock Mod by default generates the bedrock layer from the overworld en both bedrock layers in the nether flat. Other dimensions can easily be added to this list by creating a custom JSON file (see below). Most dimensions should work with this.
Guides
Step-by-step, in-game.
Adding a Custom Dimension to Flat Bedrock with a JSON FileThe mod ships with configs for the Overworld and the Nether, but any dimension that has a bedrock layer can be added…Choosing Which Block Replaces Bedrock and Which Layers to FlattenFlat Bedrock does not just delete bedrock; it replaces the flattened layer with a block you choose. Getting that…Flattening Bedrock in a World You Already StartedInstalling the mod into an existing save does not automatically fix bedrock you have already generated. New chunks…How to Make the Nether Roof and Floor Flat with Flat BedrockThe Nether is the dimension where this mod changes the most, because it has bedrock both at the bottom of the world…
Frequently asked questions
How do I make the Bedrock flat in a world I already started?
Set retroGenTop or retroGenBottom to true in the relevant dimension's JSON file in /config/flatbedrock/dimensions/. This makes the mod re-run generation on already-loaded chunks, so existing bedrock gets flattened too.
What does genTop and genBottom actually mean?
GenBottom controls the floor layer of bedrock at the bottom of the dimension, and genTop controls the ceiling layer at the top. Set each to true for the layer you want flattened and false to leave it alone.
How do I add a new dimension to Flat Bedrock?
Create a new JSON file in /config/flatbedrock/dimensions/ named after the dimension, and set dimID to that dimension's numerical ID. Copy the structure of overworld.json or nether.json and adjust genTop, genBottom, and fillBlock as needed.
What number do I put for dimID?
DimID is the numerical dimension ID, not the name — the overworld uses 1 and the nether uses its own ID in the default nether.json. Check the mod or dimension you're targeting for its registered numeric ID rather than guessing.
See all 10 Flat Bedrock questions ›
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