Activision today announced Guitar Hero: On Tour has sold in excess of 300,000 units in North America in the first seven days since its launch, making it the largest North American launch for the Nintendo DS in the company’s history by more than a factor of eight.

In addition, Guitar Hero: On Tour’s performance ranks it as one of Activision’s top 5 best-selling launches of any title on any platform in the company’s history.
Guitar Hero: On Tour transforms your Nintendo DS into a shredding machine with the included 4-Button hardware accessory.
Guitar Hero: On Tour for the DS features over 20 tracks and 4 different game play modes. In Single Player Mode you prove your guitar shredding skills while navigating through Career or Quick Play modes. In Multiplayer Modes you can play: Face Off, Pro Face Off, Guitar Duel and Co-op. In Guitar Duel Mode you battle it out with different attacks, including DS-microphone and Touch Screen attacks. In Practice Mode you practice using the Guitar Hero Guitar Grip to nail those tricky solos.

Guitar Hero for the Nintendo DS sells on Amazon.com for $49.99.
Via the Activison site.