Guitar Hero is officially coming to DS, with Guitar Hero: On Tour. But how is a game that uses a guitar attachment going to work on the tiny Nintendo DS? Simple: A guitar attachment especially for DS, called a "Guitar Grip" that has the tried and true fret buttons (but it looks like only 4 buttons will be used). With 6 characters, 2-player co-op or competitive play, and unlockable venues, songs and outfits, this game looks promising. Look for it in June.