Reef
by TeamVoided
Reef is a Fabric library from TeamVoided that exposes vanilla world generation features as configurable replacements for other mods to build on.
What it does
The library extends vanilla worldgen with alternatives to features that cannot be changed in place. Its main goal is to take vanilla world generation and make it configurable, and it reaches that goal by adding new, identical features next to the originals rather than editing them. Reef's own feature list includes a customizable Spike Ice Spike, an upside-down Inverted Spike, a customizable Monster Room dungeon, a fossil-like Structure Piece with a forced height offset, and a Large Cave Pillar built on Large Dripstone. A Feature List entry places several features in order, and Custom Tags let icebergs and eroded badlands generation be enabled in chosen biomes.
Reef depends on Fabric API, Fabric Language Kotlin and Lithostitched, which must be installed alongside it. Because the mod is server-side only, players join a server running it without installing anything, and only the server needs the jar. Files are published for Fabric alone, for 1.20.5 – 1.21.11, with 0.3.0+1.21.11 for 1.21.11 as the latest file. The code is under the MIT License and is open source.
Key features
Configurable vanilla features
Spike, inverted spike, monster room and fossil-style features are provided as configurable duplicates of vanilla features.
Large cave pillars
The Large Cave Pillar feature builds on Large Dripstone and can be customized for cave generation.
Feature lists
A Feature List entry places a set of features in a defined order, so a biome's generation can be assembled from parts.
Custom tags
Custom tags enable icebergs and eroded badlands generation in the biomes they are added to.
Custom structure pools
A custom StructurePool projection is included, though it is still experimental and does not yet behave as expected.
Compatibility
Latest build for each game version and loader.
1.21.x7 of 7 versions with builds
1.20.x2 of 2 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
Questions
Which libraries does Reef require?
Does Reef need to be installed on clients?
Is Reef ready for use in a world?
In the catalog
Reef is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from TeamVoided
Similar mods
What the author says
Library that extends vanilla worldgen by providing alternatives to unmodifiable features The main goal of Reef is to take vanilla world gen and make it configurable. The way we want to achieve this is by not changing vanilla, but adding to it. So let's say we want to be able to customize the Ice Spike feature, the…
Official listing
- Modrinth page
- modrinth.com/mod/reef
- Owner
- TeamVoided
- Published
- 2024-04-20
- Updated on Modrinth
- 2026-03-29
- Facts verified
- 2026-10-15