Nintendo has shown just a handful of actual DS games, and many of them only in video form. In addition to the following titles, however, they did show a dozen or so technical demos, each demonstrating different ideas for how developers might use the DS. In one, you could carve a spinning piece of wood by using the stylus on the touch screen; in another, you controlled various levers and gauges on a submarine by grabbing and sliding them. A particularly interesting demo from Namco had the player use the stylus to sketch a Pac-Man, which would then come to life and chomp its way across the screen. Here are the few games we got to see...