 Guitar Hero : On Tour was released on the Nintendo DS hand @-@ held system on June 22 , 2008 . The game includes a peripheral , dubbed the " Guitar Grip " , a rectangular device that fits into the second slot of the Nintendo DS or DS Lite . The peripheral only features the first four fret buttons and a strap so the Nintendo DS can be held sideways comfortably for play . The game also includes a guitar pick shaped stylus for use with strumming in the game , which players move across the <unk> . Guitar Hero : On Tour was developed by Vicarious Visions , who also ported the Guitar Hero games to Nintendo 's Wii console . 
