Extreme Worldgen

This datapack modify the terrain generation and most of trees

2.0K Downloads

datapackfabricforgeneoforgequiltadventureworldgen

Rent Server with this Mod

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About this Mod

Extreme worldgen

This datapack "Extreme worldgen" change the default vanilla minecraft generator terrain.

Mountains are more realistics, caves are way more extreme, and nether is way more difficult, even with and open celling.

Extreme worldgen changes the default trees too, to more big trees.

Two new biomes added, maple forest and samurai garden.

Nether more overworld like terrain.
nether extreme

Available Versions

1.21.5release

MC 1.21.5fabric, forge, neoforge, quilt

May 3, 2025

1.21.5release

MC 1.21.5datapack

May 3, 2025

Extreme 1.0release

MC 1.21.4fabric, forge, neoforge, quilt

March 25, 2025

Extreme 1.0release

MC 1.21.4datapack

March 22, 2025

How to Install Extreme Worldgen on Your Server

Order Server

Order a Minecraft Java server with at least 4 GB RAM (6 GB recommended).

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (1.21.5).

Install Mod

Open the mod browser in the dashboard and search for "Extreme Worldgen". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

1.21.5, 1.21.4

Server-side

✓ Required

Recommended RAM

6 GB(min. 4 GB)

Frequently Asked Questions

Extreme Worldgen server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 4 GB RAM is allocated and the loader matches the mod version (1.21.5). You can switch loaders with one click in the panel.

Is Extreme Worldgen compatible with datapack and fabric and forge and neoforge and quilt?

Extreme Worldgen officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 1.21.5, 1.21.4. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Extreme Worldgen – how to optimize performance?

Recommended RAM: 6 GB (per 5 players). Use /spark profiler to check if Extreme Worldgen consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.