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William Wythers' Overhauled Overworld

William Wythers' Overhauled Overworld

MOD
This mod overhauls all vanilla biomes, with different sub biomes!
by Cristelknight
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5,848,579 downloads
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Updated Oct 14, 2026
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Adventure and RPG Biomes World Gen
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Welcome to William Wythers' Overhauled Overworld for 1.20.1 and higher!

William Wythers' Overhauled Overworld

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.

WWOO 3.0.0
MC Client, Fabric, Server, Quilt, 26.3
Beta 2026-09-16 Get
WWOO 3.0.0
MC Client, NeoForge, Server, 26.3
Beta 2026-09-16 Get
WWOO 3.0.1
MC Client, Fabric, Server, Quilt, 26.3
Beta 2026-09-16 Get
WWOO 3.0.1
MC Client, NeoForge, Server, 26.3
Beta 2026-09-16 Get
WWOO 2.7.1
MC Client, NeoForge, Server, 26.2
Beta 2026-09-12 Get
WWOO 2.7.1
MC Client, Fabric, Server, Quilt, 26.2
Beta 2026-09-12 Get
WWOO 2.7.0
MC Client, Fabric, Server, Quilt, 26.1.2
Beta 2026-07-16 Get
WWOO 2.7.0
MC Client, NeoForge, Server, 26.1.2
Beta 2026-07-16 Get
WWOO 2.6.7
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-28 Get
WWOO 2.6.7
MC Client, Fabric, 1.21.1, Server, Quilt
Release 2026-05-28 Get
WWOO 2.6.6
MC Client, Fabric, 1.21.1, Server, Quilt
Release 2026-05-23 Get
WWOO 2.6.6
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-23 Get
WWOO 2.6.5
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-22 Get
WWOO 2.6.5
MC Client, Fabric, 1.21.1, Server
Release 2026-05-22 Get
WWOO 2.6.4
MC Client, 1.21.1, NeoForge, Server
Release 2026-05-21 Get
WWOO 2.6.4
MC Client, Fabric, 1.21.1, Server, Quilt
Release 2026-05-21 Get
WWOO 2.6.4
MC Client, NeoForge, Server, 1.21.11
Release 2026-03-25 Get
WWOO 2.6.4
MC Client, Fabric, Server, Quilt, 1.21.11
Release 2026-03-25 Get
WWOO 2.6.3 NeoForge
MC Client, NeoForge, Server, 1.21.11
Release 2026-02-12 Get
WWOO 2.6.3 Fabric
MC Client, Fabric, Server, 1.21.11
Release 2026-02-12 Get
WWOO 2.6.2 NeoForge
MC Client, NeoForge, Server, 1.21.11
Release 2026-01-08 Get
WWOO 2.6.2 Fabric
MC Client, Fabric, Server, 1.21.11
Release 2026-01-08 Get
WWOO 2.6.0 Fabric
MC Client, Fabric, Server, 1.21.10
Release 2025-12-18 Get
WWOO 2.6.1 NeoForge
MC Client, NeoForge, Server, 1.21.11
Release 2025-12-15 Get
WWOO 2.6.1 Fabric
MC Client, Fabric, Server, 1.21.11
Release 2025-12-15 Get
WWOO 2.6.0 NeoForge
MC Client, 1.21.10, NeoForge, Server
Release 2025-10-15 Get
WWOO 2.5.3 [HUGE UPDATE]
MC Client, Fabric, 1.21.8, 1.21.5, 1.21.6, 1.21.7, NeoForge, Server
Release 2025-06-20 Get
WWOO-2.4.4
MC 1.21.5, Fabric, Client, NeoForge, Server
Release 2025-04-28 Get
WWOO-2.4.3
MC Fabric, Client, 1.21.4, NeoForge, Server
Release 2024-12-13 Get
WWOO-2.3.4
MC 1.21, Fabric, Client, NeoForge, 1.21.1, Server
Release 2024-06-29 Get
WWOO-2.3.1
MC 1.20.5, Fabric, Client, Forge, 1.20.6, 1.20.4, Server
Release 2024-05-16 Get
WWOO-2.3.0
MC 1.20.5, Fabric, Client, Forge, 1.20.6, 1.20.4, Server
Release 2024-05-15 Get
WWOO-2.0.1
MC Fabric, Client, Forge, 1.20.4, Server
Release 2023-12-29 Get
WWOO-2.0.0
MC 1.20.2, Fabric, Client, NeoForge, 1.20.1, Forge, Server, Quilt
Release 2023-10-11 Get

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