Worldgen Patches
by Apollo
Worldgen Patches corrects several small world generation quirks in vanilla Minecraft, from Jagged Peaks stone faces to snow layers under trees.
What it does
The patches target a handful of minor world generation issues rather than adding new biomes or structures. Steep surface rules in vanilla cause Jagged Peaks stone faces to appear on certain sides, and the mod changes that rule. Snow layers are adjusted so they generate correctly beneath trees, and igloos no longer produce a trapdoor basement.
Beached shipwrecks are also corrected, so they keep their intended heights and block palettes consistently across chunk boundaries. The mod is server-side only, which means players join without installing it and only the server runs it. It requires Fabric API on Fabric, and files are published for Fabric and NeoForge across 16 release versions, 1.21 – 26.2, with the latest files for 26.2 dated 2026-07-11.
The source code is open and the mod is released under the MIT License. Both loaders share the same feature set as far as the author notes describe.
Key features
Jagged Peaks stone faces
Adjusts the steep surface rule so stone faces stop appearing on north and east-facing slopes of Jagged Peaks.
Snow layers under trees
Snow layers now generate correctly beneath trees instead of being placed in the wrong spots.
Beached shipwreck heights
Beached shipwrecks keep consistent heights and block palettes across chunk borders.
Igloo basements removed
Igloos no longer generate a trapdoor basement, leaving the structure as vanilla intended.
Gallery
Compatibility
Latest build for each game version and loader.
26.x4 of 4 versions with builds
1.21.x12 of 12 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 1
Use cases
Who it’s for: Server owners who want vanilla world generation to behave more consistently without adding new content. Players on a server that runs it need nothing installed.
How it compares
WorldgenTweaks is a Fabric-only, server-side mod for 1.21.8 – 1.21.11 under the GNU General Public License v3.0 or later. Corrected Shipwrecks is also server-side and open source under the MIT License, but it targets 26.2 only and covers shipwrecks alone. Dimension Fix is the older option, a client and server mod for 1.16.2 – 1.18.1 under the GNU Lesser General Public License v2.1 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Worldgen Patches | Fabric and NeoForge | 1.21 – 26.2 | Server-side only | 2026-07-11 |
| WorldgenTweaks | Fabric | 1.21.8 – 1.21.11 | Server-side only | 2025-12-21 |
| Corrected Shipwrecks | Fabric | 26.2 | Server-side only | 2026-07-30 |
| Dimension Fix (Some Forge Patches Ported) | Fabric | 1.16.2 – 1.18.1 | Client and server | 2022-02-28 |
Questions
Does Worldgen Patches need Fabric API?
Do players need to install Worldgen Patches?
Which game versions have files?
In the catalog
Worldgen Patches is one of 8,515 World generation mods on ModsFinder, and one of 4,027 World generation mods for Fabric. 13,894 mods support Minecraft 26.2.
More from Apollo
Similar mods
What the author says
This mod aims to patch some minor issues/quirks with world generation. Currently, this includes the following fixes: - The steep surface rule (which in vanilla gives Jagged Peaks stone faces) now affects all directions, not just the north and east-facing sides. - Snow layers correctly generate both below and on…
Official listing
- Modrinth page
- modrinth.com/mod/worldgen-patches
- Owner
- Apollo
- Published
- 2025-03-18
- Updated on Modrinth
- 2026-07-11
- Facts verified
- 2026-10-15