What Lithostitched works with.
| Platform | Java Edition |
|---|---|
| Loaders | Fabric, Forge, NeoForge |
| Minecraft versions | 1.20, 1.20.4, 1.21, 1.21.11, 26.1, 26.2 |
| Environment | Server |
Lithostitched is a server-side Java library mod that gives datapack and mod creators new data-driven worldgen tools: biome modifiers, template pool injectors, and surface rule modifiers. It ships separate builds for Fabric, Forge, and NeoForge, and Modrinth lists its client side as unsupported, so it does nothing when installed alone with no matching content behind it. Most players who have it are running a datapack, modpack, or another mod that lists Lithostitched as a required dependency.
What Lithostitched actually does
On its own, Lithostitched changes nothing in a vanilla world. It exists so other creators can define new worldgen behavior in a datapack instead of writing custom mod code for it. Three systems make up the current feature set: biome modifiers that add or change biome properties through data, template pool injectors that add jigsaw structure pieces without replacing the originals, and surface rule modifiers that adjust terrain surface rules the same way. All of it is configured through JSON files a datapack or mod ships, not through anything a player sees or clicks.
Why Lithostitched is in your mods folder
If a modpack, datapack, or another mod requires Lithostitched, install the matching loader build alongside it: Fabric, Forge, or NeoForge. Fabric builds also need Fabric API installed, since Lithostitched declares it as a required dependency on that loader. Forge and NeoForge builds need no extra library mod to run Lithostitched itself.
Loader and Minecraft version support
Fabric and NeoForge both reached Minecraft 26.2 with release-channel builds published September 6, 2026. Forge support stalled earlier: its newest release-channel build still only targets Minecraft 1.20.4, a ceiling that has not moved since July 2024. A Forge pack built for a current Minecraft version cannot use Lithostitched.
- Fabric: reaches Minecraft 26.2, requires Fabric API
- NeoForge: reaches Minecraft 26.2, no extra library needed
- Forge: capped at Minecraft 1.20.4, unchanged since mid-2024
What Lithostitched does not cover
Lithostitched has no client-side component, no in-game menu, and no visuals of its own, because everything it does routes through data files rather than anything you interact with directly. If you are trying to disable a specific terrain or structure change and removing Lithostitched does not do it, the datapack or mod that uses Lithostitched controls that behavior, not Lithostitched itself. The same applies to library mods like Puzzles Lib: they supply shared tools, and the content built on top of them decides what actually changes in the world.
Frequently asked questions
Questions about Lithostitched.
5 questions
What does Lithostitched do?
Lithostitched is a data-driven library that lets datapacks and other mods add biome modifiers, jigsaw structure pieces, and surface rule changes without writing custom mod code. It has no features of its own, and a vanilla install with only Lithostitched added looks and plays exactly like vanilla Minecraft.
Why do I have Lithostitched installed if I didn't add it myself?
A modpack, datapack, or another mod you installed most likely lists Lithostitched as a required dependency. Check that mod or pack's own page to see what it uses Lithostitched to do. Removing Lithostitched will break whatever content depends on its worldgen tools.
Does Lithostitched work with Forge and NeoForge?
Yes. Lithostitched ships separate builds for Fabric, Forge, and NeoForge, each installed like any other loader-specific mod. Fabric and NeoForge builds both reach Minecraft 26.2, but Forge support stopped at Minecraft 1.20.4 and has not moved since mid-2024, so a Forge pack built for a newer version cannot use it.
Do I need Fabric API to run Lithostitched?
Only on Fabric. The Fabric build of Lithostitched lists Fabric API as a required dependency, so install both together or Lithostitched will fail to load. Forge and NeoForge builds do not need Fabric API or any other library mod, since neither loader uses Fabric's dependency system.
Can I use Lithostitched on a client without a matching server?
No. Modrinth marks Lithostitched's client side as unsupported and its server side as required, since all of its worldgen tools run during world generation on the server. Installing it alone on a client changes nothing, and a server running it needs no matching client-side copy for players to join.
