Question: Robert A. Kotick is CEO of which American video game developer?
Context: Tim Rogers (born June 7, 1979) is an American video game journalist and developer.  In games journalism, he is known for his association with mid-2000s New Games Journalism, his verbose writing style, and his video game reviews website "ActionButton.net".  "The Guardian" cited his 2005 "Dreaming in an empty room: a defense of "Metal Gear Solid 2"" as a core example of New Games Journalism, a style of video game journalism that emphasizes the author's subjective and personal experiences in relation to the game world.  Rogers has also written for "Next Generation", "GamesTM", "Play", "Game Developer", and "Kotaku". Alexander Seropian (born 1969) is an American video game developer, one of the initial founders and later president of Bungie Software Products Corporation, the developer of the "Marathon", "Myth", and "Halo" video game series.  Seropian became interested in computer programming in college and teamed up with fellow student Jason Jones to publish Jones's game "".  The two became partners, and Bungie grew to become the best-known Apple Macintosh game developer before being bought by Microsoft in 2001. Imagic was a short-lived American video game developer and publisher that created games initially for the Atari 2600 and later for other consoles.  Founded in 1981 by Atari and Mattel Intellivision expatriates, its best-selling titles were "Atlantis", "Cosmic Ark", and "Demon Attack".  Imagic also released games for the Mattel Intellivision, ColecoVision, Texas Instruments TI-99/4A, IBM PCjr, Commodore VIC-20, Commodore 64 and Magnavox Odyssey².  Their Odyssey² ports of "Demon Attack" and "Atlantis" were the only third party releases for that system in America.  The company never recovered from the North American video game crash of 1983 and was liquidated in 1986. Atari, Inc. was an American video game developer and home computer company founded in 1972 by Nolan Bushnell and Ted Dabney.  Primarily responsible for the formation of the video arcade and modern video game industries, the company was closed and its assets split in 1984 as a direct result of the North American video game crash of 1983. Ruffian Games is a British video game developer founded in 2008.  The developer was formed by two members, Billy Thomson and Gaz Liddon, of the video game developer Realtime Worlds.  Ruffian Games originally consisted of members from Realtime Worlds and Xen Studios, among others.  They have made "Crackdown 2", the sequel to the 2007 video game, "Crackdown". A video game developer is a software developer that specializes in video game development – the process and related disciplines of creating video games.  A game developer can range from one person who undertakes all tasks to a large business with employee responsibilities split between individual disciplines, such as programming, design, art, testing, etc.  Most game development companies have video game publisher financial and usually marketing support.  Self-funded developers are known as independent or indie developers and usually make indie games. Robert A. Kotick (born 1963) is an American businessman who serves as CEO of Activision Blizzard. Amaze Entertainment was an American video game developer from the United States that developed over 100 games in its ten-year history spanning 12 years from 1997 to 2009.  (selling nearly 40 million units), for several video game platforms, with headquarters located in Kirkland, Washington.  Amaze was founded by serial entrepreneur Dan Elenbaas and his business partners Todd Gilbertsen and David Mann.  Amaze’s primary focus was licensed games based on movie franchises, comic series, and original titles for established video game franchises.  Amaze grew to become one of the world's largest independent video game developers, with nearly 300 employees in four studios.  Amaze was acquired by Foundation 9 Entertainment on November 14, 2006. Crystal Dynamics is an American video game developer that was founded in 1992 by Judy Lang, Madaline Canepa and Dave Morris.  Based in the San Francisco Bay Area, California, Crystal Dynamics was the first licensed developer for Panasonic's original 3DO console, a gaming hardware platform founded by Kleiner Perkins.  Their first release, "Crash N Burn", was a launch game for the system and was included as a pack-in game with the console.  The 3DO's launch during the 1993 Christmas season was a commercial failure, severely damaging Crystal Dynamics' software strategy.  In 1994, the company became a publisher for two new gaming platforms, the PlayStation and the Sega Saturn.  The studio was acquired by Eidos Interactive, a British video game publisher, in 1998.  After Square Enix acquired Eidos in 2009, Crystal Dynamics became a subsidiary of Square Enix. Activision Blizzard, Inc. is an American video game developer.  Headquartered in Santa Monica, California and founded in 2008 through the merger of Vivendi Games and Activision, the company is traded on the NASDAQ stock exchange under the ticker symbol NASDAQ: ATVI , and since 2015 has been one of the stocks that make up the S&P 500.  Activision Blizzard currently includes five business units: Activision, Blizzard Entertainment, Major League Gaming, Activision Blizzard Studios, and King Digital Entertainment.
Answer: Activision Blizzard