Description
🌄 Connected Biomes
Tired of biomes that end in a perfectly straight wall? Connected Biomes makes borders between biomes flow into each other naturally, then softens the blocky terrain with partial-height tiles and optional rounded ground.

🌿 Natural Biome Transitions
- Biome borders are warped by noise into fingers, islands and gradual blends instead of hard lines
- Vegetation bleed: trees and plants from a compatible neighbour sparsely cross the border, so a forest fades into the plains instead of stopping
- Adjustable transition width, blending intensity and noise scale
- Smart compatibility reads modded biomes' data (climate, tags, trees) to decide how they should blend, so it works with worldgen mods out of the box
- Blacklist any mod or single biome (
modidormodid:biome) to keep its vanilla borders

🧱 Terrain Tiles
One-block height steps are smoothed during world generation with partial-height tiles: blocks split into 2, 4 or 8 layers (your choice).
23 tile types: grass, dirt, coarse dirt, rooted dirt, podzol, mycelium, moss, mud, clay, sand, red sand, gravel, snow, stone, deepslate, granite, diorite, andesite, tuff, calcite, sandstone, red sandstone and terracotta.
- Tiles behave like their parent block: grass spreads, sand and gravel fall
- Choose whether a mined tile drops a full block or a proportional amount
🔵 Rounded Terrain (experimental, visual only)
- Rounded tiles: smooth tile surfaces (collision stays stepped)
- Round edges: soften exposed corners of tiles and snow
- Rounded Blocks: ground next to tiles is rounded along with them
- Every Block Rounded: round all the ground in the world
- Full rounding: no edges or corners left at all, with curved surfaces
- Trees, leaves, crafting tables and builds are never touched
- Applies instantly, even in existing worlds
🎥 Smooth Step Camera
Your camera glides up steps, tiles and rounded terrain instead of snapping.
⚙️ Configuration
- Full in-game settings screen via Mod Menu + Cloth Config
- Presets:
natural,subtle,dramatic,smooth_world,performance. You can also save your own. - Command:
/connectedbiomes preset - Works with Sodium
ℹ️ Biome transitions and tiles only affect newly generated chunks. Rounding is visual and works anywhere.
📦 Versions
| Loader | Minecraft |
|---|---|
| Fabric | 1.21.1, 1.21.11, 26.1.2, 26.2, 26.3 |
| Forge | 1.20.1 |
Requires: Fabric API (on Fabric) Recommended: Mod Menu, Cloth Config
❓ FAQ
Can I use it in modpacks? Yes! It's MIT-licensed. A link back is appreciated. Does it work with other worldgen mods? Yes, that's what Smart compatibility is for. If a biome looks wrong, add it to the blacklist and report it. Server-side? Install it on both the server and the client.




