Nintendo has filed a lawsuit in Japan against five retailers for "importing and selling equipment that enables illegal game programs to be played on [the Nintendo DS]" -- presumably flash carts such as R4. According to Reuters, Nintendo is joined by 54 other Japanese developers.

While the lawsuit is intended to thwart piracy, an unfortunate side effect is a hit to the homebrew community. If you were ever planning to pick up a flash cart for the DS, you might want to go ahead and grab one while you can.

This article was originally published on Joystiq.

PSP hardware and software sales for Q1 2009