Do these seeds work with Terralith and Tectonic on Bedrock Edition?

Yes. These seeds work across all Bedrock platforms including Windows 10, Xbox, PlayStation, Nintendo Switch, iOS, and Android. Just make sure you have the mods or equivalent behavior packs installed.

Can I use these seeds with just Terralith or just Tectonic?

These seeds are optimized for both mods together, but they'll still generate fine with just one. You'll just see fewer of the unique features that the missing mod would add.

What Minecraft versions do these seeds work with?

These seeds are tested for Minecraft 1.20.1 and 1.20.6 on Java Edition with Forge or Fabric, and the latest Bedrock versions across all platforms.

Do I need to download anything extra to use these seeds?

No. You just need the Terralith and Tectonic mods installed in your Minecraft setup. The seeds themselves are free and don't require separate downloads.

Which seed is best for multiplayer servers?

Any of these work for multiplayer, but Seeds #3 and #5 are especially good because they have plenty of space and varied terrain for multiple players to build and explore separately.

Best Minecraft Seeds for Terralith & Tectonic 1.20

If you’re running Terralith and Tectonic mods, you know how much they change the game. Terralith adds dozens of new biomes with unique terrain, plants, and features. Tectonic ramps things up with massive mountain ranges, deep ravines, and wild elevation changes. Getting a good seed is huge because it sets the tone for everything you’re going to build and explore.

These five seeds showcase what both mods can do. You’ll find sprawling deserts with new resources, towering mountain chains, hidden caves, and terrain that actually feels alive. Each seed has something different to offer, so pick one that matches what you want from your world.

The 5 Best Seeds

Seed #1: 85425578410475571

A solid all-rounder with diverse biomes and good cave systems. Great if you want a little bit of everything without traveling too far from spawn.

Seed #2: -1549229570210257776

This one’s packed with dramatic mountain formations and deep valleys. Perfect for players who want those towering peaks that Tectonic is known for.

Seed #3: -7336665974400178215

Tons of open space and varied terrain. Good for large-scale building projects and exploration. The landscape has some really cool natural features.

Seed #4: 138660467146790

Heavy on cave systems and underground exploration. If you’re into caving and mining, this seed delivers plenty of action below the surface.

Seed #5: -5757465302180938436

A balanced mix of terrain types with some standout visual moments. Biomes flow nicely into each other, making for smooth exploration.

Compatibility

Java Edition: Works with Minecraft 1.20.1 and 1.20.6 using Forge or Fabric with Terralith and Tectonic installed.

Bedrock Edition: These seeds work on Windows 10/11, iOS, Android, Xbox, PlayStation, and Nintendo Switch. You’ll need to have both mods or the equivalent behavior packs installed.

How to Install

For detailed step-by-step instructions on installing seeds in your Minecraft world, check out our full guide here: How To Install Minecraft Seeds

Just copy the seed number, create a new world, paste it into the seed field, make sure Terralith and Tectonic are active, and you’re good to go.