Guitar Hero On Tour (ギターヒーローオンツアー, Gitaru Hīrō On Tsuā) is a music rhythm game developed by Vicarious Visions and published by Activision for the Nintendo DS handheld video game console. It is the third installment in the Guitar Hero series, and the first to be released for a handheld platform. The game features 25 songs from various artists, and players use the DS's stylus and buttons to match notes that scroll on the touch screen. Players can also challenge their friends to a 'Face-Off' duel, or play together in 'Co-op' mode. The game also includes a 'Create-A-Song' mode, which allows players to create their own custom songs. Guitar Hero On Tour is the first Guitar Hero game to feature the DS's wireless multiplayer capabilities, allowing up to four players to compete in a 'Battle' mode. With its innovative touch screen controls and wireless multiplayer capabilities, Guitar Hero On Tour offers an exciting and unique gaming experience on the Nintendo DS.