About William Wythers' Expanded Ecosphere
From ModrinthA realistic Minecraft world gen mod that adds nearly 200 new biomes and overhauls all vanilla biomes.
William Wythers' Expanded Ecosphere
This Fabric / NeoForge mod soughts to re-create the vanilla overworld in a way that makes a more realistic and atmospheric world.
Description
In the 1.19 update to this mod I have gone far beyond what I ever did before, adding close to 200 new biomes to make a world infinitely more immersive than any of this mod's earlier iterations. With such a large scope, there will surely be areas where refinement is needed. If you see any such places, please give me your feedback in the comments below or even better on Discord.
Where is WWOO (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).
You can find the WWOO project here.
Features Expanded Ecosphere
- Large Biomes! Because of some problems with world presets, you should not use the vanilla world presets. Instead use the forceLargeBiomes option, found in the WWOO config.
- A config menu is available if you install Cloth Config and on fabric also Mod Menu.
- The overworld isn't piglin safe. (On datapack it is, so that the Hoglins which can spawn in the overworld don't mutate to Zoglins)
List of all Biomes
Expanded Ecosphere also changes Vanilla biomes. But those aren't listed here. <pre> Ancient Copper Beech Forest Ancient Emerald Beech Forest Ancient Golden Beech Forest Ancient Moss Forest Ancient Mossy Swamp Ancient Oak Swamp Ancient Taiga Andesite Crags Aspen Crags Autumnal Birch Forest Autumnal Crags Autumnal Flower Forest Autumnal Forest Autumnal Forest Edge Autumnal Plains Autumnal Swamp Ayers Rock Badlands Canyon Badlands Desert Badlands River Bamboo Jungle Canyon Bamboo Jungle Highlands Bamboo Jungle Swamp Bamboo Swamp Bayou Berry Bog Billabong Birch Swamp Birch Taiga Black Beach Black River Boreal Forest Red Boreal Forest Yellow Cactus Desert Calcite Caverns Calcite Coast Chaparral Coastal Mangroves Cold Island Cold Plains Cold Stony Shore Cool Forest Cool Forest Edge Cool Plains Cool Stony Canyons Cool Stony Peaks Crimson Tundra Danakil Desert Deep Dark Forest Deep Dark Incursion Deep Desert Deep Desert River Deep Icy Ocean Deep Snowy Taiga Deep Underground Deepslate Shore Desert Beach Desert Island Desert Lakes Desert Pinnacles Desert River Dripleaf Swamp Dry Savanna Dry Tropical Forest Dry Tropical Grassland Eucalyptus Deanei Forest Eucalyptus Jungle Eucalyptus Jungle Canyon Eucalyptus Salubris Woodland Eucalyptus Woodland Fen Flooded Jungle Flooded Rainforest Flooded Savanna Flooded Temperate Rainforest Flowering Pantanal Forbidden Forest Forest Edge Forested Highlands Frigid Island Frozen Island Fungous Dripstone Caves Giant Sequoia Forest Glacial Cliffs Granite Canyon Gravelly Beach Gravelly River Guelta Harvest Fields Highland Plains Highland Tropical Rainforest Highlands Huangshan Highlands Humid Tropical Grassland Ice Cap Icy Crags Icy Ocean Icy River Icy Shore Icy Volcano Jacaranda Savanna Jade Highlands Jungle Canyon Jungle Island Jungle River Kwongan Heath Lantern River Lapacho Plains Larch Taiga Lichenous Caves Lichenous Dripstone Caves Lush Dripstone Caves Lush Fungous Dripstone Caves Lush Shroom Caves Maple Mountains Marsh Mediterranean Island Mediterranean Island Thermal Springs Mossy Caves Mossy Dripstone Caves Mud Pools Mushroom Caves Mushroom Island Old Growth Taiga Crags Old Growth Taiga Swamp Outback Outback Desert Pantanal Phantasmal Forest Phantasmal Swamp Pine Barrens Red Desert Red Rock Canyon Sakura Forest Salt Lakes Pink Salt Lakes Turquoise Salt Lakes White Sand Dunes Sandy Jungle Savanna Badlands Savanna Basaltic Incursions Savanna River Scrub Forest Scrubland Snowy Bog Snowy Canyon Snowy Fen Snowy Peaks Snowy Thermal Taiga Snowy Tundra Sparse Bamboo Jungle Sparse Eucalyptus Jungle Sparse Eucalyptus Woodland Spring Flower Fields Spring Flower Forest Stony Canyon Subtropical Forest Subtropical Forest Edge Subtropical Grassland Taiga Crags Tangled Forest Temperate Island Temperate Rainforest Temperate Rainforest Crags Tepui Thermal Taiga Thermal Taiga Crags Tibesti Mountains Tropical Beach Tropical Forest Tropical Forest Canyon Tropical Forest River Tropical Grassland Tropical Island Tropical Rainforest Tropical Volcano Tsingy Forest Tundra Underground Volcanic Chamber Volcanic Crater Volcano Warm Birch Forest Warm Stony Shore Waterlily Swamp Windswept Jungle Wistman Woods Wooded Desert Wooded Savanna </pre>Questions, or need more information? Check out the GitHub!
Highlights
From source dataGame versions
Supports 10 Minecraft versions, the newest being 1.21.3.
Loaders
Runs on Fabric, Forge, NeoForge and Quilt.
Footprint
Rated a light load on a server.
William Wythers' Expanded Ecosphere 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
- fabric-1.21.1-3.4.7, released 2026-07-04
Game versions by loader
| Loader | Game versions | Newest |
|---|---|---|
| Fabric | 1.21.1 | 1.21.1 |
| NeoForge | 1.21.1 | 1.21.1 |
From 5 recorded builds of William Wythers' Expanded Ecosphere.
Recent builds
| Build | Released | Game versions | Loaders |
|---|---|---|---|
| fabric-1.21.1-3.4.7 | 2026-07-04 | 1.21.1 | Fabric |
| neoforge-1.21.1-3.4.7 | 2026-07-04 | 1.21.1 | NeoForge |
| fabric-1.21.1-3.4.6 | 2026-05-27 | 1.21.1 | Fabric |
| neoforge-1.21.1-3.4.6 | 2026-05-27 | 1.21.1 | NeoForge |
| 3.4.5 | 2025-12-04 | 1.21.1 | Fabric |
Run William Wythers' Expanded Ecosphere 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 catalogListed on Modrinth as “Mods”
World generation
Changes or adds to how new terrain, biomes and structures are created.
Runs on your server
From source side supportModrinth lists William Wythers' Expanded Ecosphere 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
- 1.21.3 and 9 earlier
Verified at the source
- ✓ModrinthOfficial listing, checked 2026-10-01Open ↗
- ✓AuthorCristelknight, as published on Modrinth
- ✓LicenseCC-BY-ND-4.0Free
