Minecraft – Mods in single- and multi-player

minecraft-java-editionmods

I have a question about mods for Minecraft.

I fumbled on the internet recently and I liked a few of them and I would like to play with them a little bit, but there is one thing that bothers me. The person with whom I play multiplayer via Hamachi wanted to stay with the regular version and did not upload anything.

What would happen if I have uploaded myself a mod that changes something in the game, and my friend does not? I would like to play in our shared world as usual (without mods) but when I create a new world for the single player I want the mods to work.

Is this possible?

Best Answer

Get and use MagicLauncher instead of the vanilla Minecraft launcher, and use its "profile" manager to set up one profile with mods for single-player and another profile without mods for multiplayer.

Because it loads mods dynamically, you don't have to alter the minecraft.jar, leaving you a perfectly-vanilla game for multiplayer. In your single-player profile's setup just add the mods to the lists of internal and external mods, and the launcher will add them to Minecraft only when you start the game with the single-player profile. When you want to play online, quit and restart to login with the vanilla, multiplayer profile.