Regions Unexplored: New Biomes and Blocks
Regions Unexplored is a worldgen mod that overhauls the overworld and nether with 64 new biomes and many new blocks and items. This guide covers what to expect.
New biomes
With 64 new biomes, the mod dramatically expands what generation looks like — new forests, plains, wetlands, deserts, and nether regions, each with its own trees, plants and atmosphere. Exploring for the mod's unique regions is the core of the experience.
New blocks and materials
Each biome brings new wood types, plants and decorative blocks, giving builders a much wider natural palette. Because the mod overhauls generation, these materials appear as you travel rather than being crafted from a tech tree.
Getting started
There is no machine or progression to set up — just explore. Travel widely to find the new biomes, gather their woods and plants for building, and use the mod's blocks to match the environments you discover. Regions Unexplored is about the journey through a richer overworld and nether rather than a crafting goal.
The recipe list shrank between versions
Regions Unexplored is one of the few mods here where the older build is larger: 628 crafting recipes on 1.20.1 against 594 on 1.21.1. The other categories are unchanged — 18 stonecutting, 6 smelting, 3 blasting and 1 smoking on both.
Thirty-four recipes went away in the port. If a wood or stone variant you remember is missing on the newer build, that is where it went.
584 blocks, 151 items
735 pages, and four fifths of them are blocks. That ratio is what a biome mod looks like from the inside — the content is terrain, wood sets and plants, with items only where a plant produces something.
Almost everything is a crafting recipe
With 594 of 622 recipes in the ordinary crafting category, there is no machine to build and no processing chain to unlock. Every wood set behaves like vanilla wood: plank it, then make the same family of blocks from the planks.
No structures
The mod generates no worldgen structures at all. Its biomes are the content — there is no dungeon, ruin or village variant to find inside them, so exploration here is about terrain rather than loot.
Where to start
Travel before you craft. Nothing in the recipe list is reachable without first finding the biome that grows its wood, and the biomes are the reason to install the mod in the first place. The builds are 0.6.2 on 1.21.1 and 0.5.6 on 1.20.1.