rating. Other terminology Calling a game a "Grand Theft Auto clone" is sometimes considered unfair or insulting. This is because reviewers sometimes use this term to suggest that the "clone" is a mere imitation, which commonly occurs in the video game industry, designed for the sole purpose of capitalizing on the success of the Grand Theft Auto series. However, this term can also be used as a neutral description of a game, which can range from good to bad. Reviewers have used "Grand Theft Auto clone" to describe games that rest on their own merits, and do not necessarily dismiss the entire class of games as mere imitators. Games of this type are sometimes defined under the broader terminology "open world games" or "sandbox games". However, many games that predate Grand Theft Auto III, such as Metroid from 1986, are also called open world games. Conflictingly, games such as Grand Theft Auto III and Body Harvest are credited with inventing this genre more than a decade later.i. ii. Furthermore, reviewers have stated that this genre does not include every game with a freely explorable world and that this genre is much more specific, thus excluding the free-roaming titles Spider-Man 2 and The Incredible Hulk: Ultimate Destruction from this class of games. The terminology is inconsistent, sometimes including any game with open level design, while other times focusing on a specific genre created at the turn of the century. Without clear classifications to describe the genre popularized by Grand Theft Auto, reviewers have created a number of alternate names for this genre. Some reviewers have focused on the pervasive criminal themes and content in the genre, using terminology such as "crime games", "crime-based action games", and what CNN called the "gangsta genre". Other journalists have emphasized gameplay by describing the genre as "free roaming action adventure games", "driving-and-shooting games", and "driving action hybrids". Game design Driving and shootingGrand Theft Auto clones offer players the ability to steal and drive a number of vehicles. Games have included all kinds of vehicles, such as cars, motorcycles, helicopters, boats, fixed-wing aircraft, and military vehicles. Reviewers have compared these games based on the number of vehicles they offer, with greater choice resulting in better reviews. Players can also use vehicles as weapons, either by driving into enemies, or by damaging the vehicle until it explodes. Some games allow vehicles to perform stunts. Games in the