Super Mario Galaxy on PC: Nebula

Nebula runs Super Mario Galaxy natively on Windows. The game is built as native code from the Petari decompilation; Nebula supplies what the Wii supplied: a Direct3D 12 (or Vulkan) renderer for the GX graphics commands, audio, Wii Remote input from keyboard, mouse and controllers, disc and save storage, and video timing. According to the project, the game is playable from start to finish, although bugs remain.

It contains no Nintendo code or assets: you need your own copy. The author states the host, renderer, installer and documentation were written with AI agents (Claude) directed and tested by one person. GigaROM hosts neither the port nor the game; the download comes from the official page.

• Super Mario Galaxy USA (RMGE01), revision 0, as an ISO, RVZ or extracted folder.
• 64-bit Windows 10 (1803 or newer) or 11, a Direct3D 12 GPU and a CPU with AVX2.
• 8 GB of RAM and about 5 GB of disk space.

1. Download Nebula-Setup.exe from the releases page (“Go to official project” button); it is not signed and SmartScreen will warn: choose “More info” then “Run anyway”.
2. Select your game and press “Install”.
3. Start Nebula from the Start menu. Setup also updates, repairs and uninstalls.

• Bugs remain: see the project’s known issues.
• Windows only and USA revision 0 only.
• The installer is not code-signed.

If your computer does not meet the requirements, you do not have the exact version the port asks for, or you prefer the classic route, you can play the original with a Nintendo Wii emulator: Dolphin and its install and setup guide.