Originally our guitar controllers were designed to work with Guitar Hero™, however, because of changes made to the code in Guitar Hero II™ and Guitar Hero Encore, the older versions of guitar controllers, such as the Rocking V Guitar, Shredder Guitar and the Rock Guitar, are not compatible with Guitar Hero II™. To ensure you can enjoy Guitar Hero II and Guitar HEro Encore™ with our products and to preserve your investment, pick up one of the Guitar Hero II Wired Guitar Adapter and enjoy endless hours of fun with Guitar Hero II™.