Nintendo has escalated its efforts to combat Nintendo Switch emulation, filing multiple DMCA notices against repositories on GitHub. These actions have resulted in the removal of over 400 codebases associated with Switch emulators.
The emulators targeted include Suyu, Skyline, and Yuzu. This move follows a significant legal development in 2024 where Nintendo settled with Tropic Haze, the company behind Yuzu, for $2.4 million. As part of that settlement, Tropic Haze was compelled to cease development of the emulator and remove its code. However, the open-source nature of the software allowed for code forking, which subsequently led to the creation of successor emulators like Suyu.
Earlier in 2023, developers of the Android-based Skyline emulator also discontinued the project, citing pressure from Nintendo. Nintendo's stance is that emulators facilitate piracy by bypassing the console's "technological protection measures" (TPM). These TPMs are described by Nintendo as encryption built into the Switch console and game files, designed to prevent unauthorized access and copying of games.
Nintendo's DMCA notices assert that emulators like Yuzu and Suyu "illegally circumvent Nintendo’s TPMs in order to run illegal copies of Nintendo Switch games." The company argues that these emulators require the use of unauthorized cryptographic keys to decrypt pirated game files, or ROMs, without permission. Nintendo referenced the settlement with Tropic Haze and a separate case against content creator Jesse “EveryGameGuru” Keighin, who streamed pre-release pirated games, in its takedown requests. Neither of these cases went to trial; the Tropic Haze case concluded with a settlement, and Nintendo obtained a default judgment against Keighin after he ceased communication and reportedly destroyed evidence.
Prior to these recent actions, Nintendo also reached an out-of-court agreement with the Switch emulator Ryujinx to have that project taken offline. The company has a history of aggressive legal action against Switch piracy, including a previous lawsuit seeking $4.5 million against a Reddit moderator for promoting pirated games.