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How to make a minecraft mod 1.12.2

Author

Emma Payne

Published Mar 22, 2026

How to make a minecraft mod 1.12.2

This is an in-depth tutorial going over on how to make a modded server on Minecraft 1.12.2 using Forge by portforwarding. Be sure to leave a like rating if i…

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Follow the steps below: Download the desired mods from the Forge mod database. Paste the downloaded mods .jar files into your modded server folder. Right-click the main “Server” folder and select “New,” then “Text Document.” Name it “Server Launcher.” Paste the following line into the document: …

Locate the minecraft application folder. On windows open Run from the start menu, type %appdata% and click Run. On mac open finder, hold down ALT and click Go then Library in the top menu bar. Open the folder Application Support and look for Minecraft. Place the mod you have just downloaded (.jar file) into the Mods folder.

Install just like any other Forge mod: Search, download and run the Forge Installer for Minecraft 1.12.2 (recommended or latest version). Download this mod and place the JAR file into the “mods” folder in your Minecraft directory Open the Minecraft Client and select the Forge Profile. Run Minecraft Forge. DISCLAIMER BACKUP YOUR MINECRAFT WORLDS.

There is no simple way or program to do this. You would need to set up an IDE with the source code of each mod and manually update all of the code inside them individually. Modded development questions are off-topic here, but you can find modded tutorials online if you really want to try to update them. –

Wait until there’s MCreator for 1.14.4, then open and resave your 1.12.2 MCreator mod file in the 1.14.4 MCreator.

Coding with Minecraft. Gift. Create Minecraft mods, add-ons, texture packs, and more! Tynker makes modding Minecraft easy and fun. Get a private Java server to deploy mods with 1-click and invite friends to explore and play! Create Minecraft Resources.

Create runs on Minecraft Forge only. When installing mods manually, make sure to add Flywheel to the mods folder alongside it. (Not required on Servers as of 1.18.1-0.4d) Mod-launcher clients such as Curse or GDLauncher will do this automatically. Thanks to our wonderful Patrons

How to make Minecraft mods?

Minecraft mods can be created using different methods. Perhaps, the most popular software for making new mods is Minecraft Forge. Bear in mind that this method requires extensive programming knowledge. Here’s how to install the Forge and set it up before you start coding:

How do I add mods to a Minecraft server?

Go to the search bar and type %appdata% and open the folder that shows up in the search. When this folder is open, go to and open the .minecraft folder. Inside this .minecraft folder, you should see a mods folder, open up this folder. Next, paste in your mod we copied earlier.

What version of Minecraft do I need to download to mod?

Next you will need to download the 1.12.2 version Minecraft Forge, as this will allow us to mod Minecraft 1.12.2. The instructions shown here should work for any Minecraft version from 1.12.2 onwards. You can find the download link HERE, and just follow the instructions we’ve laid out below.

How do I add mods to my Minecraft profile?

Enter your profile name and select your Minecraft Version, then click “Create.” Click “Add More Content” on the page that appears. Select the desired mods from the Forge catalog and click “Install” next to each one. Once the pack is created, click “Play” next to its name to start playing with the selected mods.