It is built around a series of action-adventure games focused on various incarnations of the eponymous Prince, set in ancient and medieval Persia. The first two games in the series, Prince of Persia and Prince of Persia 2: The Shadow and the Flame , were published by Broderbund. Prince of Persia 3D , named for being the first installment to use 3D computer graphics, was developed by Red Orb Entertainment and published by The Learning Company on PC; The Dreamcast version was developed by Avalanche Software and published by Mattel Interactive. Ubisoft bought the rights to the franchise in 2001 and rebooted it with Prince of Persia: The Sands of Time . Ubisoft's Assassin's Creed franchise is considered to be the spiritual successor to the series. The Sands of Time continuity The first game in the series was created by Jordan Mechner after the success of Karateka. Drawing from multiple general sources of inspiration, including the One Thousand and One Nights stories, and films like Raiders of the Lost Ark and The Adventures of Robin Hood, the protagonist's character animation was created using a technique called rotoscoping, with Mechner using his brother as the model for the titular prince. The original Prince of Persia, with its more than 20 platform ports, is one of the most ported games in video game history. Mechner enrolled in New York University's film department, producing an award-winning short film during his time there, before returning to design and direct a sequel to the original game. The sequel, Prince of Persia 2: The Shadow and the Flame, was developed internally at Broderbund with Mechner's supervision. The Broderbund/Learning Company's games division, the assets of which included the Prince of Persia franchise, was subsequently sold to Ubisoft. Mechner, who owned the Prince of Persia intellectual property, was brought in to work with Ubisoft on a reboot of the franchise, titled The Sands of Time, although he was originally wary after the failure of Prince of Persia 3D. The team they worked with was also working on Tom Clancy's Splinter Cell: their aim with the game was to "breathe new life into the action-adventure genre". Mechner did not take part in the production of the next game, Prince of Persia: Warrior Within, and he commented on finding the dark atmosphere and heightened level of violence unappealing. For The Two Thrones, the developers and artists tried to strike a balance between the light, cartoon-like tones of The Sands of Time, and the grittier mediums of Warrior Within. In November 2008, Ubisoft revealed that it was working on a new entry in the franchise, which was later revealed to be Prince of Persia: The Forgotten Sands.