Tectonic Mountains Add-On
Tectonic Mountains Add-On changes the mountain terrain that the Tectonic mod generates, adding greenery, denser forests and fewer villages to those ranges.
What it does
The add-on is a simple extension for Tectonic. Its mountains are covered in greenery rather than bare stone, and forests grow denser where the ranges meet lower land. Rivers, valleys and hills are shaped to sit between the peaks, so a generated world reads as one continuous landform instead of isolated ridges. Village generation is removed from these mountain areas.
Required dependencies are Lithostitched, Tectonic and Terralith, which must be installed on the server alongside this add-on. Tectonic Mountains Add-On runs on the server only, so players join without installing anything. It is published for Fabric, Forge and NeoForge, with files for 1.20.1 and 1.21.1 released 2026-08-07 under the MIT License. The code is not open source.
Key features
Greenery on mountains
Mountain slopes and peaks are covered in vegetation instead of bare rock, which changes how the ranges look from a distance.
Denser forests
Forest generation is increased in the areas around the mountain ranges, so treelines sit closer to the peaks.
Rivers, valleys and hills
The terrain between mountain ranges gets rivers, valleys and rolling hills, so transitions between biomes feel less abrupt.
Villages removed
Villages do not generate within the mountain areas this add-on changes, leaving those ranges uninhabited.
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 3
Use cases
Realistic mountain worlds
Servers that want a more naturalistic mountain setting can use the add-on to fill ranges with vegetation and surrounding terrain.
Exploring unsettled ranges
Because villages are removed from the mountains, players who travel through them find no settlements along the way.
Who it’s for: Server owners who already run Tectonic and want more natural mountain terrain on their world. Players only need the server to run it.
How it compares
Cliffs is an open source mod under the MIT License that runs on Fabric, Forge and NeoForge for 1.20.1 – 1.21.11, and the server needs it while clients may leave it out. Dynamic Trees - Dense Trees is open source under the MIT License and targets Forge and NeoForge for 1.20.1 – 1.21.1, where both the server and every player need it. Tectonic Mountains Add-On is server-side only and targets the same loaders and range as Dynamic Trees - Dense Trees.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Tectonic Mountains Add-On | Fabric, Forge and NeoForge | 1.20.1 – 1.21.1 | Server-side only | 2026-08-07 |
| Cliffs | Fabric, Forge and NeoForge | 1.20.1 – 1.21.11 | Server required, client optional | 2025-12-14 |
| Dynamic Trees - Dense Trees | Forge and NeoForge | 1.20.1 – 1.21.1 | Client and server | 2026-01-12 |
Questions
Does Tectonic Mountains Add-On need Tectonic?
Do players need to install the add-on?
Which loaders and versions are supported?
In the catalog
Tectonic Mountains Add-On is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 32,366 mods support Minecraft 1.21.1.
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What the author says
This is Tectonic Mountains, Its a simple add-on for the Mod "Tectonic" All this does it make it more dedicated to a realistic mountain experience. This mod changes Tectonic to add: - Green Mountains (makes all mountains covered in greenery) - More Dense Forests - Rivers, Valleys, Hills - Removes Villiages
Official listing
- Modrinth page
- modrinth.com/mod/tectonic-mountains-add-on
- Owner
- QuantumDuality
- Published
- 2026-08-07
- Updated on Modrinth
- 2026-08-07
- Facts verified
- 2026-10-15