Nintendo and 54 other game software companies take R4 distributors to court citing the Unfair Competition Prevention Law as their legal grounding.
Nintendo filed a lawsuit today with the Tokyo District Court against companies distributing the "R4 Revolution for DS." For those unfamiliar, the device allows gamers to play ROMs on their DS systems. After downloading illegal ROMs from the internet players need only to transfer them to a mini-SD card and insert it into the R4 DS game shell.
Though the R4 can be used for more harmless tasks, such as homebrew development, it is also being used as a pirated game player to a large enough extent to draw attention. Nintendo, Arc System Works, SNK, Capcom, Koei, Jaleco, Square Enix, Taito, Sega, Tomy, Tecmo, Hudson, Bandai Namco, The Pokemon Company, Yukes, Level Five, and others are pursuing the case in an attempt to curb piracy.