Screenshot 1 of 7. Tectonic mod thumbnail with title text over a sweeping mountain range backdrop
What Tectonic works with.
| Platform | Java Edition |
|---|---|
| Loaders | Fabric, NeoForge, Forge |
| Minecraft versions | 1.18.2, 1.19.4, 1.20.6, 1.21.11, 26.1.2, 26.2, 26.3 |
| Environment | Client, Server |
Tectonic is a Minecraft Java worldgen mod by Apollo that rebuilds the overworld into continent-sized landmasses, ocean islands and mountain ranges that stretch for tens of thousands of blocks. It runs on Fabric, NeoForge and Forge, and a plain datapack covers 1.18.2 to 26.3. The server needs it, the client is optional. Apollo's own notes name 1.21.1 and 26.1 as the versions that still get fixes.
What Tectonic changes in your world
Tectonic changes terrain shape, not gameplay. The mod form has a config for editing many of the features below, and v3 adds a config screen.
- Continents thousands to tens of thousands of blocks wide, with smaller islands between them that use vanilla mountain shaping.
- Oceans much deeper than vanilla, with deep oceans reaching the deepslate layer.
- Mountain ranges that can climb close to the height limit.
- Underground rivers that connect to surface rivers, plus lava tunnels far below.
- Jungle pillars, large badlands canyons, desert dunes, tiered plateaus, valleys and low wetlands.
Loaders, versions and dependencies
- Fabric: 1.18.2 to 26.3. The newest release (3.1.0 beta 1) requires Fabric API and Lithostitched.
- NeoForge: 1.19.3 to 26.3. The newest release (3.1.0 beta 1) requires Lithostitched.
- Forge: 1.18.2 to 1.20.4. The newest file, 3.0.17 from November 2025, requires nothing.
- Datapack: 1.18.2 to 26.3, no required dependencies.
- Quilt: builds stopped in February 2025 at 1.21.4.
Older releases list different dependencies, so read the list on the file you download. The trade-off is that the newest Fabric and NeoForge releases are beta.
How to install Tectonic
- 1.For the mod, install Fabric, or Forge or NeoForge, for your Minecraft version.
- 2.Download the matching Tectonic jar from Modrinth, plus its required dependencies.
- 3.Put every jar in the mods folder (.minecraft/mods by default) and launch with the loader's profile.
- 4.Tectonic also ships as a plain datapack, which lists no required dependencies, if you would rather not use a mod loader.
Biome mods, Terralith and CliffTree
Tectonic works with biome mods that add their biomes through TerraBlender or Biolith, including Biomes O' Plenty, Regions Unexplored, Nature's Spirit and BWG. The mod includes a Terralith-compatible version, also offered as a standalone datapack, and with Terralith installed the ocean islands spawn calderas and volcanoes. CliffTree is not compatible on 1.20. On 1.21 it needs small tweaks that ship with the mod and are also available as a datapack.
Questions about Tectonic.
5 questions
Does Tectonic need Lithostitched?
It depends on the loader and release. The newest Fabric and NeoForge releases (3.1.0 beta 1) require Lithostitched, and Fabric also needs Fabric API. The newest Forge file (3.0.17) and the datapack list no required dependencies. Older releases differ, so check the dependency list on the file you download.
Which Minecraft versions does Tectonic support?
Fabric reaches 26.3 from 1.18.2, NeoForge reaches 26.3 from 1.19.3, Forge covers 1.18.2 to 1.20.4, and the datapack covers 1.18.2 to 26.3. Apollo's notes say only 1.21.1 and 26.1 get fixes, so choose one of those if you want current support.
Does Tectonic work on multiplayer servers?
Yes. Tectonic is required on the server and optional on the client, so a server without it will not generate Tectonic terrain. Install the mod or apply the datapack on the server, and players can then join with or without the mod on their own side.
Is there a Tectonic addon for Bedrock?
No. This Tectonic is a Java Edition mod and datapack, and Bedrock Edition cannot load Java mod jars. The project has no Bedrock release, so Bedrock players cannot install it from this page.
Does Tectonic work with Terralith?
Yes. Tectonic includes a special Terralith-compatible version in the mod, and the same version is available as a standalone datapack. With Terralith installed, the islands between continents spawn calderas and volcanoes.
