''Nobunaga's Ambition'' is a strategy game series made by {{Koei}}, the first installment being released in 1983. The game puts you in the role of a ''daimyō'' in [[JidaiGeki Sengoku-era Japan]], your goal being to unify the country and earn (or with one clan, keep) the title of ''Shōgun''. As long as this series remains largely unchronicled in the West, the [[http://en.wikipedia.org/wiki/Nobunaga_no_Yabou article]] on {{Wikipedia}} has a brief history of the series you might find relevant. Thirteen main-series games have been released in Japan, scattered across [[MultiPlatform an army of platforms]].

A crossover game titled ''VideoGame/PokemonConquest'', featuring elements from ''Nobunaga[='s=] Ambition'' and ''{{Pokemon}}'', was released by Nintendo and Tecmo Koei on March 17th, 2012 in Japan. Fans went wild, especially from the ''Pokémon'' side of things possibly due to the DarkerAndEdgier crossover aspects.
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This game series provides examples of:
* AwesomeMusic: YokoKanno for an early titles.
* BadAss: Some of the generals qualify easily. Azai Nagamasa and Sanada Yukimura can easily shoot up the ranks when in cavalry units.
* CrossOver: ''Pokémon Conquest''. Standard NotMakingThisUpDisclaimer applies.
* GenderFlip: The latest title in the series has a female version of Uesugi Kenshin, based on a popular legend that tries to explain some aspects of his behavior and historical accounts
* MultiPlatform: This series has hit most of the popular consoles since the {{NES}}, a few that weren't, a bunch of (rarely mutually compatible) 1980s Japanese PC brands, and most iterations of Windows since the 1990s. Also a couple of ports for Macintosh, and one for Amiga.
* NameOrderConfusion: Like the ''VideoGame/SamuraiWarriors'' games, in English translations, it's written in first name-last name order despite this being in Sengoku era.
* NintendoHard: In the {{NES}} version, it's possible on higher difficulties to die before your first turn.
* NoExportForYou: Of 13 games, only five have been released in the United States. There was a 14-year window with no North American releases between the SNES game ''Lord of Darkness'' and the [=PS2=] ''Rise to Power''.
** [[FanMyopia Which are still five more than Europe got]].
*** [[MarthDebutedInSmashBros Nobunaga Debuted in Pokémon]]: Pokémon Conquest has a European release - the first Nobunaga's Ambition game released there.
*** Or, more accuratly, a UK release.
* SpinOff: The ''DynastyWarriors''-based ''SamuraiWarriors''. It may have been instrumental in getting a U.S. release for ''Rise to Power'' and ''Iron Triangle''.
* VideoGameCrueltyPotential: Just as in ''VideoGame/RomanceOfTheThreeKingdoms'', you can execute captured generals (or even your own retainers) on a whim.
* {{Video Game Long Runner|s}}: Fourteen main releases since 1983, not counting all the little differences between ports. Not so many as its sister series, but still respectable.
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