Question: MxO was billed as an official continuation of the storyline of a franshise created by film directors formerly known as what?
Context: Dariusz Adam Wolski (born 7 May 1956) is a Polish film and music video cinematographer.  He is best known for his work as the cinematographer on the "Pirates of the Caribbean" film series and on Alex Proyas' cult classics "The Crow" and "Dark City".  Many of his collaborations include working with film directors like Ridley Scott, Rob Marshall, Tony Scott, Gore Verbinski and Tim Burton.  He has been a member of the American Society of Cinematographers since 1996 and a member of the Academy of Motion Picture Arts and Sciences since 2004.  Along with working with many film directors, Wolski has also worked on several music videos with artists such as Elton John, Eminem, David Bowie, Sting, Aerosmith, and Neil Young. Kim Ki-duk ( ] ; born December 20, 1960) is a South Korean filmmaker noted for his idiosyncratic art-house cinematic works.  His films have received many distinctions in the festival circuit, making him one of the most important contemporary Asian film directors.  Major festival awards include Golden Lion at 69th Venice International Film Festival for "Pietà", Silver Lion for Best Director at 61st Venice International Film Festival for "3-Iron", Silver bear for Best Director at 54th Berlin International Film Festival for "Samaria" and Un Certain Regard prize at 2011 Cannes Film Festival for Arirang.  His most widely known feature is "Spring, Summer, Fall, Winter... and Spring" (2003), included in film critic Roger Ebert's Great Movies.  Two of his films served as official submissions for Academy award for best foreign language film as South Korean entries.  He has given scripts to several of his former assistant directors including Juhn Jai-hong ("Beautiful" and "Poongsan") and Jang Hoon ("Rough Cut"). The Matrix Online (officially abbreviated as MxO) was a massively multiplayer online role-playing game (MMORPG) initially developed by Monolith Productions and later, a few months after launch, by Sony Online Entertainment.  It was billed as an official continuation of the storyline of "The Matrix films", as The Wachowskis, the franchise's creators, gave their blessing to the notion of gamers "inherit[ing] the storyline".  The game began closed beta-testing in June 2004 which was then opened for people who pre-ordered the game in November 2004.  Warner Bros. and Sega officially released "MxO" on March 22, 2005 in the United States.  It was released in Europe on April 15, 2005.  In June 2005 it was announced that Warner Bros. sold the rights to the game to Sony Online Entertainment, and the game's development and operation was transitioned to the latter on August 15, 2005.  Sony Online Entertainment shut down operation of the game on July 31, 2009. Metro 2034 (Russian: Метро 2034 ) is a novel written by Russian author Dmitry Glukhovsky and is a sequel to his novel Metro 2033.  Although Metro 2034 is the official continuation of the Metro 2033 storyline, the 2013 video game – the sequel to the video game adaptation of the original novel – has no similarities to the novel in its plot.  Metro: Last Light has been adapted into the novel Metro 2035. Monticello Regional Airport (IATA: MXO, ICAO: KMXO, FAA LID: MXO) , formerly known as Monticello Municipal Airport, is a public airport located two miles (3 km) southeast of the central business district of Monticello, a city in Jones County, Iowa, United States.  It is owned by the City of Monticello. Montazur Rahman Akbar is a Bangladeshi film director, screenwriter, producer, social activist and entrepreneur known for his film work in Dhallywood, the Bengali-language film industry centered in Dhaka, Bangladesh.  He was also a freedom fighter in Bangladesh Liberation War in 1971 in Sector Number 7 under the command of Sector Commander Quazi Nuruzzaman.  After returning from war, he joined the local theater group Akkelpur Adorsho Club and directed a number of plays.  He started his career as an assistant director under prominent film directors Matin Rahman, Azizur Rahman, Zillur Rahman, Saiful Azam Kashem and Narayan Ghosh Mita.  He worked as an assistant with the crew of successful films like "Chhutir Ghonta", "Janata Express" and many more from 1979 to 1990.  He debuted as a director with "Takar Pahar" (1993) but its release got delayed.  Thus the first film released under his direction is "NayJudhdhu" (1991).  He has directed successful commercial films from 1990's.  He works most often in the action genre with Superstar Manna.  He has collaborated with action hero Manna in 22 films, writer Abdullah Zahir Babu in 46 films, actor Dipjol in 13 films, editor Amzad Hossain in 22 films.  Akbar writes screenplays for most of his films.  He has written a single song in his film "Big Boss" (2003).  He was owner of the production company Nayan-Apon Production.  This company produced the films "Kukhato Khuni" in 2000 and "Babar Junno Judhdhu" in 2008 with Star Plus.  His films have introduced Dipjol, Popy, Keya, Riya Sen, Shakiba, Songita, Antara Biswas and Pushpi to Dhallywood.  His sibling Istofa Rahman is a cinematographer in Dhallywood.  He served as board executive member of Bangladesh Film Producers Distributors Association and Bangladesh Film Directors Association.  He won awards such as the Zia Sommamona Prodok (2003) and Jonotar Nishas Personality Award (2009).  He also founded a development NGO named Prochesta.  He has directed television commercials with agencies like Greenland Training Center, Decent Holding and Hiton TV.  He has directed television drama and drama serials like Pakhal, Golden Swarna, Pakhi Ebong Manushera.  He has been invited as a guest judge in television channel programs like "Super Hero Super Heroin", "Voice Of The Nation" and "Mirakkel Akkel Challenger".  He is also interested in business in his hometown Joypurhat.  His business enterprises include Apu Electronics Bazar, Mariam Traders, Furniture Village and Cholte Cholte. Alan Smithee (also Allen Smithee) is an official pseudonym used by film directors who wish to disown a project.  Coined in 1968 and used until it was formally discontinued in 2000, it was the sole pseudonym used by members of the Directors Guild of America (DGA) when a director, dissatisfied with the final product, proved to the satisfaction of a guild panel that he or she had not been able to exercise creative control over a film.  The director was also required by guild rules not to discuss the circumstances leading to the move or even to acknowledge being the project's director. The Neuchâtel International Fantastic Film Festival (NIFFF) is a Swiss film festival dedicated to fantastic movies.  It was created in 2000 and is now renowned internationally as one of the foremost film festivals in the world for genre cinema.  The NIFFF defines itself through a rich and diversified programming, constructed around three central axes: Fantastic cinema, Asian cinema and Digital images.  The films shown at the Festival are very diversified, ranging from major works by renowned directors to unknown and underground "films d'auteurs".  Famous fantastic film directors have already honored the NIFFF with their presences, including George A. Romero, Joe Dante, John Landis, Terry Gilliam, Hideo Nakata. Lana Wachowski (formerly Laurence "Larry" Wachowski, born June 21, 1965) and Lilly Wachowski (formerly Andrew Paul "Andy" Wachowski, born December 29, 1967) are American film directors, screenwriters, and producers.  They are siblings, and are both trans women.  Collectively known as The Wachowskis ( ) and formerly as The Wachowski Brothers, the pair made their directing debut in 1996 with "Bound", and achieved fame with their second film "The Matrix" (1999), a major box office success for which they won the Saturn Award for Best Director.  They wrote and directed its two sequels: "The Matrix Reloaded" and "The Matrix Revolutions" (both in 2003), and were deeply involved in the writing and production of other works in that franchise. The Directors Guild of Japan (日本映画監督協会 , Nihon Eiga Kantoku Kyōkai ) is a trade union created to represent the interests of film directors in the film industry in Japan.  It was founded in 1936, with Minoru Murata serving as the first president, and has continued to this day apart from a period between 1943 and 1949 when it was disbanded at first on orders from the government.  It is particularly concerned with protecting the copyright and other rights the director has over the work, defending freedom of expression, and promoting the economic interests of its members.  For instance, it has issued protests against efforts to prevent screenings of such films as "Yasukuni" and "The Cove".  The Guild also produced the film "Eiga kantoku tte nan da" ("What Is a Film Director?")  on the occasion of its 70th anniversary to promote its view that the director possesses the copyright of a film.
Answer: The Wachowski Brothers