Comment Re:DS Improvements a good thing (Score 2, Informative) 187
What I'm most surprised about is that no one has developed a gyro/motion sensor that would fit into the advance cartridge slot to make games more Wii like.
Oh but they have...
http://nintendo.joystiq.com/2006/12/06/third-party-card-brings-motion-sensing-to-the-ds/
This was a third-party accessory, and because of this only homebrew could take advantage of it. It's not mentioned in the article, but there were versions for both Slot1 and Slot2. There were several homebrew games written that took advantage of this. It seems like the company that made this went out of business unfortunately.