server, only datapack and mod all modloaders

Tectonic is a world generation datapack and mod that aims to transform how terrain is shaped.


Mountain Ranges

The way mountains generate has been completely overhauled, with them forming huge mountain ranges that can stretch for thousands of blocks. These can stretch higher than vanilla mountains do, sometimes reaching peaks above y300!

Underground Rivers

In mountainous terrain that is too towering to allow regular river generation, terrain gets carved for rivers to continue underground. These link right up to the regular rivers, so there's no interruption in exploring along rivers. Very deep underground, you can even find a deeper variant with lava instead of water.

Oceanside Cliffs

On steep cliff faces in the Stony Shore biome, waves and wind carve into the cliff. (Disclaimer: waves and wind not included.)

Smoother Surfaces

One of (if not the most) notable changes to generation you'll see with Tectonic is that terrain is much smoother than normal. This means the strange staircasing on some hills - also referred to as "lerp" issues - is gone. In previous Tectonic versions this meant that Windswept biomes were removed from generation, but in v2 and above they will once again generate.


Smooth desert dunes will generate in some Desert biomes, giving Deserts a special look to them.

Deeper Oceans

Oceans are much deeper than they are in vanilla, with deep oceans even extending into the deepslate layer!

Removed Features

Previous versions of Tectonic included things like custom biomes, trees, and more. These were removed for both performance and compatibility reasons. For improved biome vegetation, check out Not Just Biomes.