A Nintendo Lawyer has clearly described what the company may or may not deem illegal regarding the emulation of their consoles.

One of the heads of Nintendo's intellectual property department gave a speech outlining what Nintendo views as illegal use of emulators.

Nishiura added that if the emulator also disables security measures like encryption, that could also be considered illegal. He said this counts for other methods such as flash carts, citing the use of Nintendo DS flash carts (such as the R4) which bypassed security by imitating a legitimate DS game.

Nintendo's emulator takedowns, with the likes of Yuzu and Ryujinx both biting the dust after facing the company's wrath. Now, at a recent lecture hosted by Japan’s Association of Copyright for Computer Software,

Last year, the world of video game emulation faced significant challenges as Nintendo ramped up its efforts to shut down several major projects, including Yuzu, Citra, and Ryujinx.

Koji Nishiura, Nintendo's patent attorney, weighs in on the legality of video game emulators.

Nintendo is famously litigious when it comes to emulators. In March 2024, developers of Nintendo Switch emulator Yuzu were ordered to pay $2.4 million in damages after a court settlement with Nintendo.

"To begin with, are emulators illegal or not," Nishiura asks. "This is a point often debated. While you can't immediately claim that an emulator is illegal in itself, it can becom