Install 1.12.2/1.20/1.21 Optimized Forgium in GDLauncher
1.12.2/1.20/1.21 Optimized Forgium runs on Forge. Pick whichever your existing instance uses, or create a new one. GDLauncher installs the correct loader automatically.
Install on Forge
- Open GDLauncher and create a new instance (the + button on the Library page).
- Pick the Forge loader and a Minecraft version that 1.12.2/1.20/1.21 Optimized Forgium supports (1.21.1, 1.20.1, 1.12.2 are common choices).
- Open the new instance, go to the Addons tab, and click Add Addons.
- Paste the Quick Install ID
#optimized-forgium, find 1.12.2/1.20/1.21 Optimized Forgium in the results, and hit Download. GDLauncher pulls dependencies automatically. - Hit Play. That's it.
Before you install
Make sure your Minecraft version matches what 1.12.2/1.20/1.21 Optimized Forgium supports. As of the latest release, 1.21.1, 1.20.1, 1.12.2 are supported. 1.12.2/1.20/1.21 Optimized Forgium only runs on Forge; mods built for other loaders won't work. GDLauncher checks compatibility for you and won't install something incompatible with the instance you've chosen.
Frequently Asked Questions
Is 1.12.2/1.20/1.21 Optimized Forgium free?
Yes. 1.12.2/1.20/1.21 Optimized Forgium is free to download and install through GDLauncher. GDLauncher itself is also free and ad-free.
What Minecraft versions does 1.12.2/1.20/1.21 Optimized Forgium support?
1.12.2/1.20/1.21 Optimized Forgium supports Minecraft 1.21.1, 1.20.1, 1.12.2. GDLauncher will automatically pick a compatible version when you install it.
Does 1.12.2/1.20/1.21 Optimized Forgium require Forge or Fabric?
1.12.2/1.20/1.21 Optimized Forgium requires Forge. GDLauncher will install the correct loader automatically when you create an instance.
How do I install 1.12.2/1.20/1.21 Optimized Forgium?
Open GDLauncher, go to your instance's Addons tab, click Add Addons, and paste the Quick Install ID #optimized-forgium. GDLauncher handles dependencies and the right Minecraft version automatically.
Who made 1.12.2/1.20/1.21 Optimized Forgium?
1.12.2/1.20/1.21 Optimized Forgium is made by Hardi4938. The full project lives on Modrinth (https://modrinth.com/modpack/optimized-forgium).
Need help?
Read our troubleshooting guide, check the guides section, or join the GDLauncher Discord community.