I am completely new to mods and relatively new to Minecraft. I have only ever played on a Realm that my friend has had for about five years. My spouse and I want to create our own Multiplayer world, and we want to use the Mo' Creatures mod with it. (Incidentally, can anyone tell me how mods work for Multiplayer worlds?) My issue is, I don't want the mod to mess up the Realm, or even appear on it at all. I only want to use the mod on this Multiplayer world. How do I make this work? I feel like it will have something to do with a different Launch Configuration, but I don't really know how these work either. I feel like a high school Physics student trying to launch a rocket: I know the basic principles, but I have no idea how to make it actually work!