 The default camera system centers the action on Ryu and his surroundings, but reviewers were frustrated by occasions when the camera locked on to part of the scenery, thus losing track of Ryu.Tecmo attempted to address this with the introduction of manual camera controls in the Hurricane Packs, and most critics judged that either the camera frame was usually acceptable, or that "Ninja Gaiden" was a good enough game that its flaws could be overlooked.Consumers purchased 1.5 million copies of "Ninja Gaiden" and "Black" to August 2007, with the bulk of these sales going to North America and Europe.