Terralith: Flat Savanna

FlatSavanna for Terralith flattens Terralith's savanna terrain into wide, open plains while preserving the surrounding elevation, biome character, water features and smooth terrain transitions. Instead of replacing Terralith's terrain generation, it reshapes the finished savanna surface so the result blends naturally into the rest of the world.

Install on both the client and the server. Works in singleplayer out of the box.

Dependencies: Terralith is required on every loader, for the same Minecraft version (Terralith 2.6 and newer also needs Lithostitched). Fabric also needs Fabric API and Architectury API. NeoForge also needs Architectury API. Forge needs nothing besides Terralith.

Free to use in any modpack — public or private, no permission needed.

What it does

• Flattens savanna terrain — hills, dunes and shallow hollows are reshaped into broad open plains while keeping the biome's natural elevation.
• Blends naturally — flattening fades out near biome borders and softens larger highland formations instead of creating hard edges.
• Slopes down to water — inside a savanna, the plain eases down to lakes, rivers and shores, so water never sits at the bottom of a pit.
• Preserves water and surfaces — rivers, lakes, grass, dirt, coarse dirt, red sand and other surface layers remain intact.
• Keeps world generation clean — terrain is reshaped before vegetation is placed, so trees, grass and other features generate on the new ground.
• Seamless across chunks — flattened terrain continues smoothly across chunk borders without visible steps or seams.

Supported Biomes

The add-on automatically affects vanilla and Terralith savanna biomes.

Other mods can add compatible biomes through the #fsterralith:savanna biome tag.

Details

• New chunks only — the mod changes world generation, so existing chunks are not modified. Start a new world or explore into newly generated terrain to see the changes.
• World decoration may differ — the same seed may look different with and without the mod, since trees, vegetation and other features are placed on the reshaped ground.
• No configuration — no config file and no setup beyond installing it with Terralith.

For modpack makers

• The mod does not replace Terralith's terrain generator — it reshapes terrain after the main terrain is generated but before vegetation and decoration, so Terralith's landscapes, biome elevations, rivers and surface materials stay intact.
• Add more biomes to the flattening through the #fsterralith:savanna biome tag.

Feedback

Please report any bugs, errors, or feature suggestions on Discord: https://discord.gg/HTkn94BXmA

More mods by Nikrecs: Fields · Better Caravans

My other mods that I recommend.