3 version of the game (ported by 4J Studios) was released on March 20, 2007, in North America and on April 27, 2007, in Europe. This version includes graphical improvements that had been made since the PC and Xbox 360 release, and was subsequently praised for its enhanced visual appeal. A PlayStation Portable version of the game was also in development before being canceled. At the 2007 E3, the Game of the Year edition for Oblivion was announced. In North America and Europe, the game was released in September 2007, for the Xbox 360 and PC, and in October 2007, for the PS3; in Australia, it was released in September 2007, for the Xbox 360 and PC, and in December 2007, for the PS3. It was also released on Steam on June 16, 2009. A 5th-anniversary edition of Oblivion was announced and released in North America in July 2011 and in Europe two months later. An Xbox 360 version of Fallout 3 and Oblivion double pack was announced for release in North America on April 3; however, it was not mentioned whether the bundled games include any of the downloadable content released for either game. Rating change On May 3, 2006, the Entertainment Software Rating Board (ESRB) in North America changed Oblivions rating from T (Teen 13+) to M (Mature 17+), citing game content not considered in the ESRB review, i.e., "the presence in the PC version of the game of a locked-out art file that, if accessed by using an apparently unauthorized third party tool, allows the user to play the game with topless versions of female characters." In response to the new content, the ESRB conducted a review of Oblivion, showing to its reviewers the content originally submitted by Bethesda along with the newly disclosed content. The ESRB reported that Bethesda Softworks would promptly notify all retailers of the change, issue stickers for retailers and distributors to affix on the product, display the new rating in all following product shipments and marketing, and create a downloadable patch rendering the topless skin inaccessible. Bethesda complied with the request but disagreed with the ESRB's rationale. Some retailers began to check for ID before selling Oblivion as a result, and one California Assemblyman used the event to criticize the ESRB's inefficiency. Additional content Starting in April 2006, Bethesda released small packages of additional downloadable content (DLC) for the game from their