Wetland
by Zaills
Wetland adds a biome named Wetland that takes over half of the overworld swamp areas, with moss cover on the surface.
What it does
Worlds generated with Wetland gain a new biome, also called Wetland, which replaces about half of the existing swamp regions. The biome uses a moss swamp feature, so its ground is covered in moss over roughly 60 percent of the surface. Rivers sit lower in the terrain than in other biomes, giving the landscape a different shape near water.
The biome keeps the same swamp spawns as vanilla, and it does not add extra slime spawning. Because Wetland is generated during world creation, it applies to new worlds and new chunks rather than changing terrain that already exists. The mod requires Biolith, which provides the biome and feature hooks it uses.
Wetland is server-side only, so players join a server running it without installing anything. It is published for Fabric only, with files for 1.21.8, 1.21.11 and 26.1, and the latest file is 1.0-1.21.11-fogfix for 1.21.11. The code is open source under the MIT License.
Key features
Wetland biome
A new biome replaces about half of the overworld swamps, keeping the swamp layout familiar in new terrain.
Moss swamp surface
A moss swamp feature covers roughly 60 percent of the surface in the Wetland biome.
Lower river terrain
Rivers within the biome sit lower in the terrain than rivers in other biomes.
Vanilla swamp spawns
Spawns match the vanilla swamp, with no extra slime spawning added.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Survival exploration
Players exploring new worlds find swamp areas with moss cover and deeper rivers in place of standard swamps.
Server worldgen
Server owners who want a different swamp appearance can run Wetland without requiring players to install it.
Who it’s for: Players and server owners who want a moss-covered swamp variant with lower rivers in newly generated overworld terrain. The mod suits servers that generate new worlds, since it applies during world creation.
How it compares
Giant Swamp Tree is a client and server mod for Fabric, Forge and NeoForge across 1.19.2 – 1.21.11 under All rights reserved, so it must be installed on both sides. Immersive Swamps is server required with client optional, MIT licensed, and is built for 26.3 on Fabric, Forge, NeoForge and Quilt. TerraBiomes is also server required with client optional, open source under the MIT License, and covers 1.21.5 – 26.2 on four loaders.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Wetland | Fabric | 1.21.8 – 26.1 | Server-side only | 2026-07-01 |
| Giant Swamp Tree | Fabric, Forge and NeoForge | 1.19.2 – 1.21.11 | Client and server | 2026-02-06 |
| Immersive Swamps | Fabric, Forge, NeoForge and Quilt | 26.3 | Server required, client optional | 2026-09-26 |
| TerraBiomes | Fabric, Forge, NeoForge and Quilt | 1.21.5 – 26.2 | Server required, client optional | 2026-07-23 |
Questions
Does Wetland need another mod to run?
Does a player need Wetland installed to join a server?
Which versions does Wetland support?
In the catalog
Wetland is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 11,959 mods support Minecraft 26.1.
More from Zaills
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/wetland
- Owner
- Zaills
- Published
- 2025-09-04
- Updated on Modrinth
- 2026-07-01
- Facts verified
- 2026-10-15