…with the new slide controller! Available only in Japan, it’s basically a sled that you can put your DS on, then slide the whole thing around on a flat surface. A motion sensor built into the sled communicates the movement to the DS. It’s currently shipping with a robot repair game.
In the other forum where people actually care about consoles not made by Microsoft there’s a report by someone who played an import copy of the game (Slide Adventure: Mag Kid).