Required: Core

Core is the foundation of the Required mod series. It adds shared materials and items, such as Plant Fiber, that other Required entries can use as common resources. Its common code and unified crafting logic are meant to be reused across the series, which reduces conflicts between those mods. Core provides no regular gameplay of its own, so a world with only Core installed looks like a vanilla world.

Core is required by one other mod in the catalog, Flint Required, so Flint Required will not start without it. The series is expected to grow with more entries, such as String Required and Copper Required, and Core is meant to keep future additions working with the existing ones. Other Required mods rely on it for material dependencies and mechanics, and the game will not start with a Required mod that depends on Core unless Core is installed as well.

Core runs on the client and the server, so the server and every player need it when a Required mod that depends on it is in use. Files are published for Forge only, for Minecraft 1.20.1. The latest Forge file is 1.0.1, released on 2025-12-29, and the mod is released under All rights reserved, so it is not open source. Public links exist for its wiki.