Terralith
Terralith: A free Overworld overhaul with more than 95 biomes, custom caves and structures. Ranked #1 of 31 in Minecraft World Generation Mods by our editors (8.9/10); pricing: Free plan; best for players wanting a broad Overworld overhaul.
At a glance
- Editor score8.9 / 10
- PricingFree plan
- Best forPlayers wanting a broad Overworld overhaul
- Free planYes
- Paid fromNone
- World coverageOverworld
- Facts checked11 Oct 2026
Where it wins
- Adds more than 95 biomes and updates many vanilla biomes
- Generates canyons, floating islands, deep ocean trenches and custom caves
- Available as a mod or datapack across multiple Minecraft versions
Where it doesn't
- Focused on the Overworld, not additional-dimension generation
- Removing it from an existing world is discouraged; start a new world
- Structure, skyland and terrain-slab configuration is limited to the mod version
Our verdict on Terralith
Terralith changes Minecraft Java Edition's Overworld generation through a free mod or datapack. It is aimed at players who want a broad change to the landscape rather than a terrain-only adjustment: it adds more than 95 biomes, updates many vanilla biomes, and generates custom caves and structures such as fortified villages and glacial huts. Its scope is the Overworld, so players looking for additional-dimension terrain generation should choose a different option.
Its breadth extends across several terrain types, including canyons, floating islands and deep ocean trenches. The mod version adds configuration options for structures, skylands and terrain slabs, and supports superflat, single-biome, large-biome and amplified world types. Those options make the mod version the more configurable choice; players preferring datapacks can still use Terralith, but the listed configuration controls are specifically for the mod.
Terralith is available for Minecraft versions 26.3, 26.2, 26.1.x, 1.21.x, 1.20.x, 1.19.x and 1.18.2, with Fabric, Forge, NeoForge and Quilt support as well as datapack availability. It supports singleplayer and server-side play. The project recommends starting a new world and warns against removing Terralith from an existing one, so it is a better fit for a planned world-generation overhaul than for changing an established world. Choose it for variety across the Overworld; skip it if additional dimensions or mid-world removal are central requirements.
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Terralith pricing
Terralith fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Minecraft versions | 26.3, 26.2, 26.1.x, 1.21.x, 1.20.x, 1.19.x, 1.18.2 |
| Mod loaders | Fabric, Forge, NeoForge, Quilt; also available as a datapack |
| World coverage | Overworld |
| Adds biomes | Yes |
| Terrain customization | Yes |
| Dimension generation | No |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan |
| Website | modrinth.com |
| Facts checked | 11 Oct 2026 |
Alternatives to Terralith
- TectonicA free terrain-focused project for players who want larger landforms and varied seas.8.8
- LithosphereA free Overworld generator for players who want continents, rivers, varied terrain and reworked caves.8.7
- CascadesA free Overworld datapack for players who want varied terrain without leaving vanilla behind.8.5
See all Terralith alternatives →
Terralith vs the competition
- Terralith vs Tectonic
- Terralith vs Lithosphere
- Terralith vs Cascades
- Terralith vs Oh The Biomes We've Gone
- Terralith vs Regions Unexplored
- Terralith vs Tellus
Compare Terralith with any tool side by side →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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