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What was done
Nebula enables native execution of Super Mario Galaxy on Windows by providing a custom host and renderer for the Petari decompilation. It supports modern graphics features like ray tracing and DLSS, requiring a user-provided game disc image.
Nebula is a project that enables Super Mario Galaxy to run natively on Windows. It functions by wrapping the Petari decompilation of the game, providing a native replacement for the original Wii SDK. The project supplies essential console services, including a Direct3D 12 or Vulkan renderer for GX graphics commands, audio output, controller input, and storage management. The game logic, including physics, is derived from the decompilation. The project's host, renderer, installer, documentation, and testing infrastructure were developed with the assistance of Anthropic's Claude AI, under the direction and review of the author. Recent development has focused on advanced rendering features, such as ray-traced lighting and ambient occlusion, with AI agents co-authoring implementation details for shadow denoising and light grid management. While the game is reported to be playable from start to finish, the author notes that bugs remain. Users must provide their own copy of the USA release (RMGE01) to use the software. The installer is not code-signed, which may trigger Windows SmartScreen warnings.
Reproduce it
Download the latest release from the project repository. Use the Nebula-Setup.exe to import a supported Super Mario Galaxy disc image (USA, RMGE01). Once installed, launch the game via Nebula.exe.
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