Ace Combat: Assault Horizon (エースコンバット アサルト・ホライゾン , Ēsu Konbatto Asaruto Horaizon ) is an installment of the "Ace Combat" arcade combat flight video game series.
 It was developed by Project Aces and published by Namco Bandai Games for the PlayStation 3 and Xbox 360 platforms in October 2011.
 The game was later released on Microsoft Windows in January 2013 through Steam.
Ace Combat Zero: The Belkan War (エースコンバット・ゼロ　ザ・ベルカン・ウォー , Ēsu Konbatto Zero Za Berukan Wō ) is a semi-realistic flight simulator developed by Bandai Namco Games for the PlayStation 2 video game console.
 It is part of the "Ace Combat" series of games.
 In Europe the game was released under the title "Ace Combat: The Belkan War".
Ace Combat: Assault Horizon Legacy, released as Ace Combat 3D: Cross Rumble (エースコンバット 3D クロスランブル , Ēsu Konbatto Surī Dī Kurosu Ranburu ) in Japan, is an action video game for the Nintendo 3DS, developed by Access Games and published by Namco Bandai Games and it is a remake of "Ace Combat 2".
 First impressions of the game were released by the "Official Nintendo Magazine" in July 2011 and were also leaked by IGN in the same month.
 Despite the game's international title outside Japan, it is not a direct sequel to the "" and has little relation to the game.
 The original Japanese version features compatibility with the Circle Pad Pro accessory.
Ace Combat 04: Shattered Skies (エースコンバット04　シャッタード・スカイ , Ēsu Konbatto Zero Yon Shattādo Sukai ) (Ace Combat: Distant Thunder in Europe) is a semi-realistic flight simulation developed by Namco for the PlayStation 2 video game console.
 It is the first in the "Ace Combat" series to be released for the PlayStation 2 and the fourth installment in the "Ace Combat" series.
Ace Combat Infinity (Japanese: エースコンバット インフィニティ ; "Ēsu Konbatto Infiniti") is a free-to-play combat flight simulator video game developed by Project Aces and published by Bandai Namco Games for the PlayStation 3.
 It is the eighteenth title in the "Ace Combat" series, and was released worldwide in May 2014.
 It is the first free-to-play title in the series, and unlike most games in the series, "Infinity" takes place on Earth.
 However, it includes certain elements from past "Ace Combat" games, including historical events, organizations, superweapons, and original aircraft.
Ace Combat: Joint Assault , or Ace Combat X²: Joint Assault in Japan, is a 2010 3D arcade, combat flight video game developed by Access Games and published by Namco Bandai Games for the PlayStation Portable.
 It is the second in the series released for the PlayStation Portable and the fourth for a portable platform.
 It is also the first game in the Ace Combat franchise to be set in the real world.
 The game was released on August 26, 2010 in Japan, on August 31, in North America, and in Europe on September 24.
Ace Combat Advance is a video game in the "Ace Combat" series.
 It is the first in the series for a handheld gaming system.
 Unlike other flight simulators, it's a top-down shooter similar to Strike series, but using fighter jets.
 It has been criticized for awkward controls, lack of appeal, difficulty and very poor graphics.
 Unlike other "Ace Combat" games, a Japanese release for the title was absent.
Official Nintendo Magazine, or ONM, is a retired British video game magazine which covered the Nintendo DS, Nintendo 3DS, Wii and Wii U video game consoles released by Nintendo.
Ace Combat 5: The Unsung War (エースコンバット5 ジ・アンサング・ウォー , Ēsu Konbatto Go Ji Ansangu Wō ) (Ace Combat: Squadron Leader in Europe) is a semi-realistic flight combat video game for the PlayStation 2.
 Like other titles in Namco's "Ace Combat" series, "Ace Combat 5" features gameplay that is a mix between arcade flight and authentic flight simulation.
 The game was developed by Project Aces, an internal Namco group credited with the development of the "Ace Combat" series, and was published by Namco in October 2004.
 A limited number of the games were bundled with the Hori Flightstick 2 accessory.
Ace Combat X: Skies of Deception (エースコンバットX スカイズ・オブ・デセプション , Ēsu Conbatto Ekkusu Sukai Obu Desepushon ) is a video game for the PlayStation Portable handheld console.
 It is the tenth installment of the "Ace Combat" video game series, the first for the PlayStation Portable system, and the second for a portable console.
 It was released for the United States on October 24, 2006.

Question: A retired British video game magazine published a review of Ace Combat: Assault Horizon Legacy in which year?
Answer: 2011