Reborn Core Mod for Minecraft 1.20.4, 1.20.2, 1.20.1 and 1.19.2, is another “mod library”, in this case, for Fabric, and as with other cases, will allow certain mods to run. Basically, if this add-on is not installed, certain mods will not be able to run.
Normally, Reborn Core is used by mod developers themselves, as it contains various content and code necessary for some features to work. Therefore, it is not recommended to install it on its own, as it will be of practically no use.
As an add-on, this mod does not modify anything independently, and its function is simply to provide support and basic data for other mods to work properly. It is also the most downloaded add-on for Fabric in the entire community.
The mod provides a set of classes and other resources for mods that use the “Tech Reborn” team, basically, almost all mods that make use of this add-on are developed by the same creator. However, its use is also permitted as long as it is for a related use.
Actually, Reborn Core does not add any extra features independently, but is a basic requirement for the operation of other mods. You will only need to use it if you want to use a mod developed by the “Tech Reborn” team.