A British high court has ruled against R4 companies Playables Limited and Wai Dat Chan. It is now illegal to import, advertise and sell R4 cartridges in the United Kingdom.
The R4 emulator carts are used to pirate Nintendo DS games.
According to website Develop, the court set a legal precedent by ruling the carts were illegal because they bypass the Nintendo DS's security measures in order to run games.
"Nintendo promotes and fosters game development and creativity, and strongly supports the game developers who legitimately create new and innovative applications," Nintendo said in a written statement. "Nintendo initiates these actions not only on its own behalf, but also on behalf of over 1400 video game-development companies that depend on legitimate sales of games for their survival."
Previously, Nintendo blamed piracy for a 50 per cent sales drop in Europe.
Nintendo victory as R4 emulator is outlawed [Develop Thanks, Zelda did it!]