William Wythers' Overhauled Overworld
ModThis mod overhauls all vanilla biomes, with different sub biomes!
Type
Mod
Modrinth Downloads
1,566,790
Modrinth ID
II7t6llZ
Last Updated
Jun 12, 2026
Description
Welcome to William Wythers' Overhauled Overworld for 1.20.1 and higher!

Introduction
This mod attempts to recreate the familiar landscapes you know and love in a way that creates a more realistic and atmospheric world.
WWOO/WWEE difference
We decided to split WWOO in two distinct mods:
- Expanded Ecosphere: This mod includes new biomes and builds upon the old 1.19/1.20 WWOO (bad compatibility with other world-gen mods).
- WWOO: This new project is focused on overhauling the vanilla biomes and is inspired by the style of the old 1.16/1.17 WWOO (good compatibility with other world-gen mods).
Use one or the other! Don't use both. Many features might be doubled and they are NOT intended to be combined.
Key Features
Overhauled Biomes
Every biome has been reworked to provide a more realistic and immersive environment. Say goodbye to the standard biomes and welcome an enhanced world filled with diverse landscapes and exciting adventures.
For an extensive showcase of the (sub)biomes, join our Discord and check out this channel (1.21.5+).
Biome Transitions
Discover the new transitions between biomes, that eliminate jarring shifts between environments, allowing for a more natural world flow. Check out this example picture in the Gallery.
Compatibility with Vanilla Clients
Worried about compatibility issues with your friends? Fear not! Overhauled Overworld exclusively uses vanilla blocks, ensuring that you can install this mod on your server, and your friends can join with their vanilla clients. This makes for a hassle-free and enjoyable multiplayer experience.
Enhance Your Experience
Since WWOO 2.6.0 these are included in the mod and can be enabled via the config!
-
Navigable Rivers: Improve your river experience with this travel-friendly add-on. Download Here
-
Cliffs and Coves: Improve your world with better coastlines using this add-on. Download Here
-
Towering Tepuis: Add a forbidding and mysterious area of adventure to your world. Download Here
If you prefer a datapack over a mod, click here to download the datapack version of WWOO.
Join Our Community
If you have any questions, suggestions, or just want to connect with fellow adventurers, we invite you to join our Discord Server. While there's no Wiki available yet, our friendly community is always ready to assist you on your journey through the Overhauled Overworld.
Compatibility
Mod Loaders
Game Versions
Screenshots
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