Under settings - Java, make sure you are using a version of 64-bit Java 8.

Download a MMC version of the pack from and drag it into the MultiMC window to create the instance.

If you are on Windows 10 or 11, make sure you are not installing it in a OneDrive folder! If you are experiencing issues with fullscreen mode, set a resolution in your launcher and check other settings in the config/lwjgl3ify.cfg config file. You only want the Java args from that page, nothing else.

If you are using MultiMC you also need to add the additional Java arguments from here.

In the case of Java 17 make sure you are updated to at least 17.0.6, older variants can cause start-up errors.

Under settings - Java, make sure you are using a new version of Java, best 64-bit Java 17 or 64-bit Java 20.

Drag it into the MultiMC/Prism window to create the instance.

Download a MMC/Prism Java17-20 version of the pack from (they are currently labelled as java17-19 or java17-20).MultiMC or Prism Launcher with Java 17-20 Īt the moment, newer Java versions can only be used with MultiMC or Prism Launcher. Even if you don't plan to play a dev build, that page will list any critical current issues, so have a look. If you want to play on the more experimental dev releases for testing or to get the latest features, you can check Dev Release Stability to see if they have serious problems. For multiplayer servers, your GTNH client needs to be of the same version as the server.It's strongly encouraged to install the latest stable release - a version that ends on '.0'.For all launchers, 5-7 GB of memory (RAM) is recommended for GTNH in single player.

Use the latest stable, which will end in zero. The latest build of GTNH is often a dev build, and might have serious or even game-breaking bugs.

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