Title: Ninja Gaiden (NES video game)
Content:  credits), the term "ninja" was gaining popularity in North America, prompting Tecmo to develop a ninja-related game for the NES at the same time the arcade version of Ninja Gaiden was being developed. Hideo Yoshizawa (listed as "Sakurazaki") developed and directed the NES version. Ninja Gaiden was Masato Kato's first full-time project as a video game designer, and he contributed the game's graphics, animations and instruction manual illustrations. Drawing inspiration from the Mario series, Yoshizawa kept the same title but changed everything else; it became a platform game as opposed to a beat 'em up such as Double Dragon; the gameplay was modeled after Konami's Castlevania, 
Title: Ninja Gaiden 3
Content:  Ninja Gaiden 3 (忍者龍剣伝3) is a 2012 hack and slash game developed by Team Ninja and published by Tecmo Koei. It is the sequel to Ninja Gaiden II and was released worldwide for the PlayStation 3 and the Xbox 360 in March. An updated version titled Ninja Gaiden 3: Razor's Edge was released later that year, originally published by Nintendo for the Wii U, and later ported to multiple platforms. The game is the first in the modern series to be directed by someone other than Tomonobu Itagaki, the former franchise director. Fumihiko Yasuda and Yosuke Hayashi are the new directors.
Title: Ninja Gaiden (NES video game)
Content:  dressed as a ninja. Tecmo predicted that the game would be the top-selling, third-party title for the NES. Demand for the game eventually exceeded its supply. While Tecmo anticipated the game would be a hit, according to Kohler they did not realize at the time the impact it would have on the video game industry "with its groundbreaking use of cinematics". Yoshizawa would go on to direct the sequel Ninja Gaiden II: The Dark Sword of Chaos (1990) and remained as an executive producer for Ninja Gaiden III: The Ancient Ship of Doom (1991), while Masato Kato took over directing the game design.
Title: Ninja Gaiden (2004 video game)
Content:  Ninja Gaiden (忍者龍剣伝) is a 2004 hack and slash game developed by Team Ninja and published by Tecmo. It was released in March, originally for the Xbox. Players control Ryu Hayabusa, a master ninja, in his quest to recover a stolen sword and avenge the slaughter of his clan. It was inspired by Tecmo's Ninja Gaiden series, and is set in the same continuity as Team Ninja's Dead or Alive fighting games. Tecmo developed Ninja Gaiden for five years, targeting a western audience. The game's violence created difficulties obtaining content ratings, and it was censored in some regions. Making use of the Xbox's internet connectivity, Tecmo promoted Ninja Gaiden with a series of international online contests; record-breaking numbers of players competed for places in the 
Title: Ninja Gaiden
Content:  Ninja Gaiden (NINJA 外伝) is a series of action video games by Tecmo featuring the ninja Ryu Hayabusa as its protagonist. The series was originally known as Ninja Ryukenden (忍者龍剣伝) in Japan. The word "gaiden" in the North American Ninja Gaiden title means “side story” in Japanese. The original arcade version, first two Nintendo Entertainment System games and Game Boy game were released as Shadow Warriors in PAL regions. As of 2008, the series has shipped over 7.7 million copies. The series gained popularity on the 8-bit NES for its tight action-platform gameplay, catchy music and, according to G4's X-Play, for being the first console game to have the 
Title: Ninja Gaiden (Game Gear)
Content:  Ninja Gaiden (忍者外伝) is an action video game released for the Game Gear in 1991 by Sega with license from Tecmo. It stars Ryu Hayabusa and is part of the Ninja Gaiden series, although it features a plot not connected to any of the other Ninja Gaiden games. The gameplay is similar to previous Ninja Gaiden games where the player jumps between platforms defeating and avoiding enemies.
Title: Ninja Gaiden (1992 video game)
Content:  Ninja Gaiden is a side-scrolling, hack & slash, platform-action video game developed by SIMS and released by Sega for the Master System in 1992, with license from Tecmo. This video game stars Ryu Hayabusa and is part of the Ninja Gaiden series, although it features a plot not connected to any of the other Ninja Gaiden games. Due to the discontinued support of the console in Japan and North America, the game was only released in Europe, Australia and other PAL territories, bearing the Ninja Gaiden label instead of the Shadow Warriors one that was usually used for the series by the time in PAL releases.
Title: Ninja Gaiden (NES video game)
Content:  Ninja Gaiden, released in Japan as Ninja Ryūkenden (忍者龍剣伝) and as Shadow Warriors in Europe, is a hack-and-slash platform game. Tecmo developed and published it for the Nintendo Entertainment System (NES). Its development and release coincided with the beat 'em up arcade version of the same name. It was released in December 1988 in Japan, in March 1989 in North America, and in August 1991 in Europe. It has been ported to several other platforms, including the PC Engine, the Super NES, and mobile phones. The story follows a ninja named Ryu Hayabusa as he journeys to America to avenge his murdered father. There, he learns that a person named "the Jaquio" plans to take control of the world by unleashing an ancient demon through the power contained in 
Title: Ninja Gaiden
Content:   Although series director Tomonobu Itagaki left shortly after the release of Ninja Gaiden II, Tecmo Koei still owned the franchise and planned to instigate developments of another title, with a newly restructured Team Ninja. This title was revealed as Ninja Gaiden III at the Tokyo Game Show 2010. Information about the game in the coming months revealed that the new director, Yosuke Hayashi, would be taking the series to new directions, including the addition of "resistance" in cutting through enemies. Later, at the E3 2011, the game was unveiled as Ninja Gaiden 3. Changes to gameplay included removing dismemberment, replacing the roll with a new "slide" maneuver, and a "kunai climb" technique that would allow Ryu to scale certain walls. Tecmo Koei released the game on March 20, 2012 for both the PlayStation 3 and Xbox 360. An expanded version of the game titled Ninja Gaiden 3: Razor's Edge was released later on November 18th of the same year for the Wii U. In early 2013, Razor's Edge was released for the PlayStation 3 and Xbox 360 as well.
Title: Ninja Gaiden (NES video game)
Content:  statues. Featuring side-scrolling platform gameplay similar to Castlevania, players control Ryu through six "Acts" that comprise 20 levels; they encounter enemies that must be dispatched with Ryu's katana and other secondary weapons. Ninja Gaiden has an elaborate story told through anime-like cinematic cutscenes. It received extensive coverage and won several awards from video gaming magazines, while criticism focused on its high difficulty, particularly in the later levels. Director Hideo Yoshizawa named Ninja Gaiden as his most commercially successful project. More than fifteen years after its release, the game continued to receive acclaim from print and online publications, being cited as one of the greatest video games of all time. It was novelized as part of the Worlds of Power game adaptations written by Seth Godin and Peter Lerangis.

Question: Who was the director of Ninja Gaiden?
Answer: Tomonobu Itagaki.