ModsFinder

Tectonic

by Apollo

Tectonic reshapes overworld terrain with taller mountain ranges, deeper oceans, larger canyons and a new set of islands between continents.

FabricForgeNeoForgeQuiltServer required, client optionalMIT LicenseOpen source1.18.2 – 26.3

What it does

Mountain ranges in Tectonic reach very long distances and rise high enough to approach the build limit. Where the terrain is too steep for surface rivers, rivers continue underground and connect back to the surface, so a river can be followed without a break. Ocean floors are deeper than in vanilla, and some deep oceans reach into the deepslate layer with overhangs and valleys. Ocean Monuments generate deeper when the mod is installed.

Smaller islands up to around a thousand blocks across sit between continents and use vanilla mountain shaping, which allows traditional mountain rings to appear. Jungles can have pillars over a hundred blocks tall, badlands can contain very large canyons, and most deserts have smooth rolling dunes. Servers need Tectonic, while players can join without it. Installation depends on Fabric API and Lithostitched. Builds are published for Fabric, Forge, NeoForge and Quilt. Open source under the MIT License, the project has files for 1.18.2 – 26.3, with snapshot builds also published. Biome mods that add their biomes through worldgen hooks are compatible with it.

Key features

  1. Tall mountain ranges

    Ranges extend across great distances and can reach close to the build limit in height.

  2. Underground river continuation

    Rivers pass underground through terrain too towering for surface rivers and link back up with them.

  3. Deep oceans

    Oceans are deeper than in vanilla, with some extending into the deepslate layer and featuring overhangs.

  4. Islands between continents

    Islands up to around a thousand blocks across use mountain shaping and can host calderas and volcanoes when a companion mod is installed.

  5. Config screen

    Version 3 includes an in-game config screen that describes what each field changes, and the mod version offers a config for many features.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.33.0.31-fabric-26.3Not available3.0.31-neoforge-26.3Not available
26.23.0.28-fabric-26.2Not available3.0.28-neoforge-26.2Not available
26.1.23.0.28-fabric-26.1Not available3.0.28-neoforge-26.1Not available
26.1.13.0.28-fabric-26.1Not available3.0.28-neoforge-26.1Not available
26.13.0.28-fabric-26.1Not available3.0.28-neoforge-26.1Not available
1.21.x12 of 12 versions with builds
1.21.113.0.19Not available3.0.19Not available
1.21.103.0.17Not available3.0.17Not available
1.21.93.0.13Not availableNot availableNot available
1.21.83.0.13Not available3.0.13Not available
1.21.73.0.3-fabric-1.21.6Not available3.0.3-neoforge-1.21.6Not available
1.21.63.0.3-fabric-1.21.6Not available3.0.3-neoforge-1.21.6Not available
1.21.53.0.1-fabric-1.21.5Not available3.0.1-neoforge-1.21.5Not available
1.21.42.4.3Not available2.4.32.4.3
1.21.32.4.2Not available2.4.22.4.2
1.21.22.4.2Not available2.4.22.4.2
1.21.13.0.28-fabric-21.1Not available3.0.28-neoforge-21.12.4.3
1.213.0.1-fabric-1.21.1Not available3.0.1-neoforge-1.21.12.4.3
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x1 of 1 version with builds
ReleaseBetaAlphaNot available

This mod also publishes snapshot builds. Snapshots are not shown in the matrix.

Requirements

Dependencies declared by the latest file for each loader.

Required 2

Fabric APILightweight and modular API providing common hooks and intercompatibility measures utilized by mods using the Fabric toolchain.
Required
LithostitchedLibrary mod with new configurability and compatibility enhancements for worldgen
Required

Required by 2 mods

Middgard Foxed1.21.1Tectonic Mountains Add-On1.20.1 – 1.21.1

How it compares

Full comparison

Revamped Floating Islands is server required with an optional client, under the MIT License, and has files for 1.19 – 26.1. Oceanus is also server required with an optional client and open source under the MIT License, with files for 1.19 – 1.21.8. Unnatural Geophobia - Biome Overhaul is server required with an optional client, is not open source and is published under All rights reserved for 1.20 – 1.21.1. Aetherial Islands targets 1.19 – 1.21.11 under the MIT License and is server required with an optional client.

ModLoadersGame versionsEnvironmentUpdated
TectonicFabric, Forge, NeoForge and Quilt1.18.2 – 26.3Server required, client optional2026-09-27
Revamped Floating IslandsFabric, Forge, NeoForge and Quilt1.19 – 26.1Server required, client optional2026-03-25
OceanusFabric, Forge, NeoForge and Quilt1.19 – 1.21.8Server required, client optional2025-08-15
Unnatural Geophobia - Biome OverhaulFabric, Forge, NeoForge and Quilt1.20 – 1.21.1Server required, client optional2026-10-11
Aetherial IslandsFabric, Forge, NeoForge and Quilt1.19 – 1.21.11Server required, client optional2026-02-11

Questions

Does Tectonic need Fabric API on every loader?

Required dependencies are Fabric API and Lithostitched, and both must be installed alongside Tectonic.

Does Tectonic have to be installed on a client?

No. Server required with an optional client means the server needs the mod and players can join without it.

Which versions are supported?

The author supports 1.21.1 and 26.1, and says other versions will not have issues fixed. Files are listed for 1.18.2 – 26.3.

Can Tectonic be used with biome mods?

Yes. It is compatible with biome mods that add their biomes through worldgen hooks, and the author lists this as a supported setup.

In the catalog

Tectonic is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 8,071 mods support Minecraft 26.3.

World generation mods8,515Fabric modsMods for 26.38,071

More from Apollo

All projects
Lithostitched1.20 – 26.3Regions Unexplored1.18.2 – 26.1.2Abridged1.20.1 – 26.2Improved Village Placement1.20.1 – 26.2Reintegrated: Chipped1.20 – 1.21.1Trimmable Tools1.19.4 – 26.2

Similar mods

Biomes O' Plenty1.7.10 – 26.3Cobblemon1.19.2 – 1.21.1Terralith1.18.2 – 26.3YUNG's Better Nether Fortresses1.18.2 – 26.1.2Dungeons and Taverns1.19 – 26.3Yeetus Experimentus1.18.2 – 26.3

What the author says

Welcome to Tectonic, a world generation project that aims to transform how terrain is shaped. Tectonic's supported versions right now are 1.21.1 and 26.1. Other versions will not have issues fixed on them.
Apollo, on the Modrinth page

Official listing

Owner
Apollo
Published
2022-10-06
Updated on Modrinth
2026-09-27
Facts verified
2026-10-15

Tags

AdventureWorld generation
Open on ModrinthCompare