GameFramework & Custom Cosmetics Overview
Please also be aware. The following two CurseForge categories should not be used unless the mod is using one of these systems.
"Custom Cosmetics" : Any mods listed as custom cosmetics will only load the data for custom cosmetics support. these will not be usable as regular mods on Curseforge and will not list in the SinglePlayer menu. Installed Custom Cosmetics will be loaded automatically on singleplayer and for servers that they are whitelisted for.
"Total Conversion" : Mods with the Total Conversion category will now load in the same manner as mods with the "Maps" category, they will also warn the player if they try to launch a total conversion mod while other mods are enabled. (edited)