> For the complete documentation index, see [llms.txt](https://cesium.gitbook.io/cesium-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cesium.gitbook.io/cesium-docs/support/java-forge-fabric.md).

# Do I need Java, Forge or Fabric installed?

You do not install Cesium into Minecraft, so mod loaders are not part of the setup.

{% hint style="info" %}
You do not install Cesium into Minecraft, so mod loaders are not part of the setup.
{% endhint %}

## Short answer

* Java: you do not install anything extra. Minecraft brings its own Java runtime and Cesium uses the game as it is. The old jar loader needed Java 17; the launcher does not.
* Forge or Fabric: not required. Cesium is not a mod. It loads into the running game from the launcher.

## What you do need

* Windows 10 or newer.
* A supported Minecraft version. See [Supported Minecraft versions and launchers](/cesium-docs/support/supported-versions.md).
* The Cesium Launcher. See [Install the launcher](/cesium-docs/getting-started/install-the-launcher.md).


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