Nintendo Takes Down More Than 400 Switch Emulator Repositories

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Nintendo sent seven DMCA notices in a coordinated action against projects linked to the Yuzu, Suyu and Skyline emulators on GitHub.

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Nintendo has removed more than 400 repositories related to Nintendo Switch emulators in a GitHub-focused crackdown. The action came through seven DMCA-based takedown notices sent as part of a coordinated campaign earlier this week.

The move targeted Yuzu forks, copies of the Suyu emulator and repositories linked to Skyline. The removed pages now display notices detailing Nintendo’s allegations that the projects violate technological protection measures.

In the documents, the company claims the projects offer, direct users to or facilitate access to Nintendo Switch emulators. According to Nintendo, the programs are primarily designed to run games for the console and illegally circumvent its technological protection measures.

The company also says that Switch games use proprietary cryptographic keys, known as prod.keys, to prevent unauthorized access and copying. According to the justification provided, the emulators use unauthorized copies of these keys to decrypt ROMs during or immediately before execution.

Nintendo argues that distributing these programs constitutes the unlawful trafficking of technology primarily designed to circumvent a protection measure controlling access to copyrighted works.

The crackdown expands a dispute that has already affected several well-known projects. Nintendo took legal action against Yuzu in 2024. Months later, development of Ryujinx ended, while Skyline halted its work in 2023 because of potential legal risks. Earlier this year, the company also targeted other emulators and repositories on GitHub.

Removing the projects from the platform may be quick, but keeping the code off the internet is more difficult. New forks may reappear faster than the takedown notices can be processed, keeping the clash between Nintendo and emulator developers active.