AO rating. However, in recent years the pornographic content in video games has been promoted particularly by Playboy. Playboy: The Mansion became the first game built around the "Playboy" license. A downloadable mod—"Hot Coffee" for the game Grand Theft Auto: San Andreas brought attention to the need to discuss the challenges faced in creating games with pornographic content. Meanwhile, Grand Theft Auto: San Andreas was pulled from shelves by Rockstar Games after it became public knowledge that, with the use of a Gameshark cheating device, the scene could be unlocked portraying the protagonist having sex with another character, although in the scene both characters have their clothes on. The game was later sold without the unlockable scene. PlayStation 2 video game God of War (2005), based on Greek mythology, features an event in the first part of the game where protagonist Kratos can have sex with two topless prostitutes, who reside in a bedroom on his boat. Although no sexual acts are depicted (they occur off-screen and are indicated by sound effects), the women are shown topless. The player interacts by performing button and joystick commands that appear on screen which results in an experience reward for the player. This type of sex mini-game became a prominent feature for the God of War series, being included in its sequels God of War II (2007), God of War: Chains of Olympus (2008), God of War III (2010), and God of War: Ghost of Sparta (2010), with the latter being the final game to feature it. The adult sections of American comic book stores frequently carry a large number of translations of Japanese hardcore comics, as well as an increasing number of home imitations. One of the Japanese animation porn movies, which started the American adult video market, was Urotsukidoji. The adult animation market exists primarily through direct sales: mail-order to customers, and wholesale to specialty shops which cater to animation and to comic-book fans. The legal framework in both countries regarding the regulation of obscene and pornographic material is overall rather similar. Internet The Internet maintains a significant part of American adult entertainment, also because the 1997 Reno v. American Civil Liberties Union case specified that the term "indecent" has no specific legal meaning in the context of the Internet. More recent federal efforts, such as the CAN-SPAM Act of 2003 expressly addressed the Internet. On May 1, 2000, American Express