NeoFlash's MK6-Motion is proof that not all flash cart manufacturers are out to capitalize on video game piracy. The cart's 16 megabits of flash memory gives users enough room to burn a passme ROM or a small homebrew project, but not commercial releases. As its name suggests, the MK6-Motion's appeal lies in its built-in accelerometer and gyro sensor.
Since the release of the DS Motion Card earlier this year, over a dozen homebrew games have already incorporated motion sensing features. The MK6-Motion slot-1 cart improves on the technology, bypassing the need for a flashed DS or an additional passthrough device to load software. The hardware doesn't have complete compatibility with existing games yet, but developers will be able to update their homebrew projects to work with the new cart.
You can pre-order NeoFlash's MK6-Motion for $49. The DS Motion Card is available at several online shops for about $30-40.