Terratonic is a data pack that lets Tectonic's terrain work with Terralith's biomes. It is a modified Tectonic with Terralith compatibility, built for worlds that run Terralith as a data pack. It is required on the host of a multiplayer world, and players who join do not need it.
Supported versions
- Minecraft 1.19 to 26.2. Builds for 1.19 to 1.21.11 require Terralith.
What Terratonic changes
Tectonic reshapes terrain on its own. Terralith adds its own biomes and world files.
- Keeps every feature of Tectonic.
- Adjusts terrain shaping to fit Terralith's biomes.
- Adds the other files needed for fairly smooth play with both.
The trade-off is a narrow scope. This is a Tectonic variant tuned for Terralith, and it links no wiki of its own. It points to the Tectonic Wiki for installation instructions.
How to install Terratonic
- 1.Get the .zip from the Modrinth page.
- 2.Place it in saves/<world>/datapacks, or add it from the Data Packs button while creating a new world.
- 3.Install Terralith too wherever the supported releases list above says it is required.
- 4.In an existing world, run /reload or restart. Terrain changes only affect chunks generated after that, so explore fresh ground or start a new world.
- 5.For multiplayer, put the .zip in the datapacks folder of the world on the host.
Pack not showing up? The guide to installing data packs covers folder layout, and a separate guide covers packs that fail to appear in the list.
Questions about Terratonic.
4 questions
What is Terratonic?
Terratonic is a data pack by Apollo that adapts Tectonic's terrain shaping to Terralith's biomes. It keeps all Tectonic features, changes the terrain so it suits Terralith, and adds the extra files needed for smooth play. It targets Java worlds that use Terralith as a data pack.
Do I need Terratonic if I use the Terralith mod?
No. Players who run the mod release of Terralith should use the Tectonic mod, which has Terratonic built in. This pack is meant for people who run Terralith as a data pack and want Tectonic terrain on top of it.
Does Terratonic work in multiplayer?
Yes, but the pack is required on the host, so install it there. Put the .zip in the datapacks folder of the world. Players who join do not need to install it, since their side is optional. Data packs that change world generation only affect newly generated chunks, so new terrain shows up as players explore fresh ground.
Why do I not see any change in an existing world?
Data packs that change world generation only affect chunks generated after the pack loads. Terrain you have already explored stays as it was. Run /reload or restart, then travel to unexplored areas, or create a new world to see the full effect.






