To install this specific legacy version, you typically use the standalone installer or manually place it in your Minecraft "versions" folder:

: Accessed by pressing Right Shift (or Right Control in some versions), this interface lets you toggle and customize dozens of modules.

: Open the Minecraft Launcher , create a "New Installation," and select the version labeled "release 1.8-Wurst-6.35.3". Safety & Usage Warning

The v6.35.3 release is a legacy version specifically maintained for compatibility with Minecraft 1.8. It includes:

: If using the .jar installer, ensure you have Java installed. Run the file and select "Install" to create a new profile in your launcher.