Princess of Mars (retitled and re-released in 2012 as John Carter of Mars) is a 2009 direct-to-DVD science fiction film made by American independent studio The Asylum, loosely based on the Edgar Rice Burroughs novel A Princess of Mars (1917). The film's promotional art mentions how the original story inspired some elements of the James Cameron film Avatar (2009), but neither the credits nor promotional material mention Edgar Rice Burroughs. It is not to be confused with the higher-budget science fantasy film John Carter (2012), which is a direct adaptation of the novel. In the UK, the film was released with the title The Martian Colony Wars, and in other international markets (such as Japan) with the title Avatar of Mars.