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Welcome to Tectonic, a world generation project that aims to transform how terrain is shaped.

Tectonic is available as a datapack and as a Fabric/Neoforge mod. Forge mod versions are discontinued starting with 1.20.5.

If you are using Terralith with Tectonic as datapacks, install Terratonic instead of Tectonic. If you are using the two projects as mods, you don't need to install anything extra.

Tectonic makes several large, impactful changes to worldgen.

Features labeled with 🎚️ can be toggled on and off in the mod version's config file.

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!

The mod version's config file provides several options for customizing mountain generation:

• terrain_scale: Vertically scales terrain, higher values = more extreme terrain heights
• horizontal_mountain_scale: Horizontally scales mountains, lower values = less steep mountain slopes
• increased_height: Enables a built-in datapack that increases the Overworld build and generation height to 640

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.

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

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.

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

If the mod version is installed, vanilla Ocean Monuments will generate deeper to compensate for the deeper oceans.