It has a built-in shooter called Face Raiders, which lets you put your face (and presumably those of your friends) in the game as targets.
It uses AR cards, like in PS3 game Eye of Judgement. It has built-in augmented reality games, which look to put monsters in environments as you observe them through the camera.It uses a built-in pedometer to record your activity, Wii Fit-style.Though it didn't seem to work very well even in the trailer. The built in cameras (one for standard photos, one set of two for 3D pics) will allow you to automatically build a base Mii from a mugshot.The 3DS is backward compatible with "most " DS games.The new Nintendo e-store will sell Game Boy and Game Boy Color games for download.It comes with a 2GbSD memory card for removable storage.Justin is currently having a whale of a time using it to aim his slingshot in The Legend of Zelda: Ocarina of Time, and it's also been confirmed for use as a periscope control in submarine shooter Steel Diver. It has a built-in gyroscope for motion control.It appears to have an iPhone-style Home button to allow multi-tasking while you take a break from a game.There will be but a single, solitary, universal Friend Code for all games.There's a whole lot you don't know, but now if you'll allow me, I'll happily splurge it in your direction. Games, release dates, prices, multimedia content, all the extra tricks, bells and whistles of the hardware itself.