About William Wythers' Overhauled Overworld
From ModrinthThis mod overhauls all vanilla biomes, with different sub biomes!
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.
Highlights
From source dataGame versions
Supports 17 Minecraft versions, the newest being 26.3.
Loaders
Runs on Fabric, Forge, NeoForge and Quilt.
Footprint
Rated a light load on a server.
William Wythers' Overhauled Overworld on Nxeon
From our catalogue- One-click install
- Supported on Nxeon Minecraft servers. We download it from Modrinth, place it, and restart the server.
- Server side
- Required on the server
- Server type needed
- Fabric, Forge, NeoForge, Quilt
- Server load
- light
- Smallest plan we suggest
- Minecraft — 2 GB (2 GB RAM). This follows our own load rating above, not a benchmark.
- Latest build
- 3.0.1 (beta), released 2026-09-16
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| NeoForge | 26.1.2 to 26.3 (3 versions) | 26.3 |
| Fabric | 26.2 to 26.3 (2 versions) | 26.3 |
| Quilt | 26.2 to 26.3 (2 versions) | 26.3 |
From 5 recorded builds of William Wythers' Overhauled Overworld.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| 3.0.1 beta | 2026-09-16 | 26.3 | NeoForge |
| 3.0.1 beta | 2026-09-16 | 26.3 | Fabric, Quilt |
| 2.7.1 beta | 2026-09-12 | 26.2 | Fabric, Quilt |
| 2.7.1 beta | 2026-09-12 | 26.2 | NeoForge |
| 2.7.0 beta | 2026-07-16 | 26.1.2 | NeoForge |
Run William Wythers' Overhauled Overworld on a Minecraft server
Pick a server or deploy a new one above; it is installed in one click.
What kind of mod it is
From the catalogWorld generation
Changes or adds to how new terrain, biomes and structures are created.
Runs on your server
From source side supportModrinth lists William Wythers' Overhauled Overworld as required on the server. Check its Modrinth page to see whether players need it too.
Compatibility
- Game
- Minecraft
- Loaders
- FabricForgeNeoForgeQuilt
- Runs on
- Serverrequired on the server
- Game versions
- 26.3 and 16 earlier
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
- ✓AuthorCristelknight, as published on Modrinth
- ✓LicenseCC-BY-NC-ND-4.0Free
