Tundra World
by KURONAMI
Tundra World recolours the overworld with a frozen climate, so glaciers, ice spikes and snowfields replace the usual biome set on NeoForge 1.21.1.
What it does
The mod reshapes the overworld into an all-frozen world in which the surface is covered by snow, ice and glacier bands. Continentalness still varies from one region to the next, so frozen seas, icy peaks and snowy plains sit in different places, under a pale winter sky. Each region reads differently from the others, yet the whole overworld stays one continuous cold world.
Underneath the new surface, the vanilla terrain, ore veins, structures and mobs keep generating as before, so familiar features stay where they are. Tundra World is built on Isekai API, which supplies the worldgen primitives it uses, and that library must be installed alongside it. The mod is server-side only, so players join without installing it, and it is distributed for NeoForge 1.21.1 alone. It belongs to a set of sister worlds that includes Mountain World, Sky World and Tropical World, each reshaping the overworld in its own way.
Key features
All-frozen overworld
The entire surface of the overworld takes on snow, ice and glacier coverage, with no warm biomes left on the surface.
Distributed frozen regions
Frozen seas, ice spikes, snowy taiga and frozen peaks are spread across the map by a banded continentalness layout.
Vanilla content preserved
Ores, structures and mobs still generate beneath the reskinned surface, so the world keeps its usual contents.
Sister world set
Tundra World is one of four worlds that reshape the overworld, alongside Mountain World, Sky World and Tropical World.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
A cold survival world
A survival world can be started with the frozen overworld, where cold biomes replace the warmer ones of the default generator.
Who it’s for: Server owners who want a frozen overworld for a multiplayer world, and single-player players who want a winter setting.
How it compares
KT's Jungle Worldgen is server-side only, open source under the MIT License and published for 1.21 – 1.21.1, so it covers the same versions but reshapes the world into a jungle instead of a frozen one. Winter Wonderland is a client and server mod under the MIT License for 1.21.4 only, so it targets a different version and needs installing on both sides. Tundra World is not open source and is distributed under All rights reserved.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Tundra World | NeoForge | 1.21.1 | Server-side only | 2026-06-02 |
| KT's Jungle Worldgen | NeoForge | 1.21 – 1.21.1 | Server-side only | 2026-06-14 |
| Winter Wonderland | NeoForge | 1.21.4 | Client and server | 2025-12-25 |
Questions
Does Tundra World need Isekai API?
Do players need to install Tundra World?
Is Tundra World available for other versions?
In the catalog
Tundra World is one of 8,515 World generation mods on ModsFinder, and one of 4,175 World generation mods for NeoForge. 32,366 mods support Minecraft 1.21.1.
More from KURONAMI
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What the author says
The overworld frozen end to end. Glaciers, ice spikes, snowfields, and frozen seas under a pale winter sky — one continuous cold world. Powered by Isekai API. Tundra World recolours the whole overworld into a snow-and-ice biome set distributed by climate band — frozen ocean, snowy plains, ice spikes, snowy taiga, and…
Official listing
- Modrinth page
- modrinth.com/mod/tundra-world
- Owner
- KURONAMI
- Published
- 2026-06-02
- Updated on Modrinth
- 2026-06-02
- Facts verified
- 2026-10-15