''Samurai Warriors'' is a spinoff of Koei's ''VideoGame/DynastyWarriors'' HackAndSlash, porting the gameplay elements to a new setting: the [[JidaiGeki Sengoku period of Japanese history]]. The playable scenarios span fifty years of Japanese history, and playable characters include UsefulNotes/OdaNobunaga, UsefulNotes/TokugawaIeyasu, UsefulNotes/ToyotomiHideyoshi, UsefulNotes/SanadaYukimura, UsefulNotes/IshidaMitsunari, UsefulNotes/MiyamotoMusashi, UsefulNotes/HattoriHanzo, UsefulNotes/FuumaKotaro, and many more. It should be worth noting that each version loosely sticks to a certain time frame and focuses on specific moments: case in point, the first game is all over Nobunaga while the second game's primary focus are the events leading to Sekigahara, and the third appears to try to cover just about everything in-between. ''Chronicles'' covers the whole lot, however.

Some of the playable battles:
* September 10, 1561: The Fourth Battle of Kawanakajima: Takeda vs Uesugi
* January 25, 1573: Battle of Mikatagahara: Oda vs Takeda
* June 28, 1575: Battle of Nagashino: Oda vs Takeda
* June 21, 1582: The Incident at Honnoji; Oda Nobunaga vs UsefulNotes/AkechiMitsuhide
* July 4, 1582: The Battle of Yamazaki: UsefulNotes/AkechiMitsuhide vs Toyotomi
* October 21, 1600: The Battle of Sekigahara: East (Tokugawa) vs West (Ishida)
* Winter 1614 - Summer 1615: Siege of Osaka Castle: Tokugawa vs Toyotomi
and many, many more

Some scenarios are "[[{{Elseworld}} What if's]]," such as Nobunaga surviving Honnoji and uniting Japan, or Hideyoshi faking his death in 1598 and appearing at Sekigahara (both examples are their respective hidden "Dream Stage" battle). In other cases, some of the "Dream Stages" are just for fun, like Tadakatsu taking on all worthy warriors in a champion's tournament or Nohime and Oichi's beauty contest battle (made even funnier if played with the [=SW2=]: Xtreme Legends expansion).

The voice acting is goofy at times (witness Hideyoshi declare, "Let's make our enemies beg us for peace!" and BadAss Honda Tadakatsu's borderline lisp), and the difficulty encompasses downright stupid allied NPC's and enemy officers who love to gang up on you, but you'll learn something about Japanese history; just remember that Tokugawa Ieyasu did not actually fight the Battle of Sekigahara with a spear that shot cannon balls.

The series encompasses:

* ''Samurai Warriors'' / ''Sengoku Musou'' (PS2, 2004)
* ''Samurai Warriors: Xtreme Legends'' / ''Sengoku Musou Moushouden'' (PS2, 2004)
* ''Samurai Warriors: State of War'' / ''Geki Sengoku Musou'' (PSP, 2005)
* ''Samurai Warriors 2'' / ''Sengoku Musou 2'' (PS2, X360, 2006)
* ''Samurai Warriors 2 Empires'' / ''Sengoku Musou 2'' (PS2, X360, 2006)
* ''Samurai Warriors 2: Xtreme Legends'' / ''Sengoku Musou 2 Moushouden'' (PS2, X360, 2006)
* ''Samurai Warriors Katana'' / ''Sengoku Musou Katana'' (Wii, 2008)
* ''Samurai Warriors 3'' / ''Sengoku Musou 3'' (Wii, 2009 [JPN], 2010 [US/EU]. [=PS3=] version coming soon in 2011 [JPN], combining the contents of this and below.)
* ''Samurai Warriors 3 Xtreme Legends'' / ''Sengoku Musou 3 Moushouden'' (Wii, 2010 [JPN])
* ''WarriorsOrochi'' / ''Musou Orochi'' (DynastyWarriors CrossOver; PC, PS2, PSP, X360, 2007)
* ''Warriors Orochi 2'' / ''Musou Orochi Maou Sairin'' (DynastyWarriors crossover; PS2, X360, 2008)
* ''Samurai Warriors Chronicles'' / ''Sengoku Musou Chronicle'' (Nintendo3DS, 2011)
* ''Sengoku Musou 3 Empires'' ([=PS3=], 2011)
* ''Warriors Orochi 3'' / ''Musou Orochi 2'' (DynastyWarriors crossover; [=PS3=], [=X360=], 2012)
* ''Sengoku Musou Chronicle 2nd'' (Nintendo 3DS, 2012)
* ''Samurai Warriors 4'' / ''Sengoku Musou 4'' ([=PS3=], PS Vita, [=PS4=], 2014)
* ''Sengoku Musou Chronicle 3'' ([=3DS=], PS Vita, 2014)
* ''Sengoku Musou 4-II'' ([=PS3=], PS Vita, [=PS4=], 2015)

See also ''VideoGame/SengokuBasara'' - which is what many say these games would be like on drugs, and ''VideoGame/PokemonConquest'' which uses the character designs from ''Samurai Warriors 3.'' See also ''VideoGame/NobunagasAmbition'', which uses the character designs from the series often and it's gameplay is the basis for ''Pokémon Conquest''.
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!This franchise features the following tropes:
* AluminumChristmasTrees: Western neophyte players in particular might just be surprised at how much of what's presented in these games is based closely on ''historical fact''.
** For example, the "star-crossed lovers" arc for Oichi and Azai Nagamasa? Yep, that one's out of Japanese history, as is [[spoiler:her death at Shizugatake, albeit the game has her fighting alongside Shibata Katsuie, who was her husband after Nagamasa, instead of committing ''seppuku'' with him]].
* AwesomeButImpractical: Less Awesome but more fun, In ''[=SW2=]'', Nene has a skill in which she can transform into any nearby character...even enemy ones. Yes, even those countless mooks you'll probably spend a lot of your time mercilessly butchering.
** In ''[=SW2=]: Empires'', custom characters using the sword, spear, naginata or Nene's moveset can use this skill too.
* BadassBoast: Typical to any "KOEI Warriors" game.
-->'''Tadakatsu Honda:''' I am a man of peerless might!
* BolivianArmyEnding: Games that depict Yukimura Sanada taking part in the Siege of Osaka tend to end with him making a final headlong charge at Tokugawa's army, as he did according to legend.
* BottomlessMagazines: All of the gun-type weapons have unlimited ammunition and don't need to be reloaded manually by the player (but there is a token effort at animating reloads during combos). Generic NPC riflemen reload between shots, though.
** It's worse with Masamune Date, because he can rapidfire his pistol, spraying waves with his Musou.
* CameraAbuse: In pre-rendered cutscenes, specially the first one of Oda or Noh, you can see blood splatter on the camera.
** In the fourth game, Mitsuhide and Magoichi's True Musou attacks involves them slashing/shooting at the screen, shattering it.
* CameraCentering
* CastFullOfPrettyBoys: While it's understandable that a game that revolves around battles fought in feudal times would have an overwhelmingly male cast, there's no reason for so many of them to be so damn [[{{Bishonen}} pretty]].
* CatchPhrase: The characters' personal variations of "Enemy Officer Defeated".
* CounterAttack: The simplest way to trigger a Mighty Strike in ''4'' is to block the officer's attacks with perfect timing.
* CrossOver: ''VideoGame/{{PokemonConquest}}'', in the sense that the character designs for the Warlord cast -- Nobunaga, Oichi, Mitsuhide, Shingen, Kenshin, etc. -- are all lifted directly from ''Samurai Warriors 3''.
* CriticalAnnoyance: Whenever an officer is just knocked down but barely took a scratch damage.
-->'''Hideyoshi Toyotomi:''' Gah! Where are my reinforcements!
-->'''Ginchyo Tachibana:''' Don't waver! The Tachibana will not be beaten!
* CriticalExistenceFailure: Every CPU-controlled officer is this. It's even worse if your side's morale is too low or if they are generic officers.
* DarkReprise: The final stage of ''Chronicles'', the Osaka Summer Campaign, features a melancholy remix of the main theme, fittingly titled "Grief".
* DefeatMeansFriendship: ''Chronicles'' depicts Kanetsugu joining Date Masamune as this, following the Battle of Hasedo. Expecting to be executed, Kanetsugu is instead surprised by an offer to join his enemy, who recognizes his great skill and potential.
* DepartmentOfRedundancyDepartment: Hideyoshi's 'One-day Castle' song back in the first game (in Siege of Inabayama) is this:
-->''Beeeehold the castle, that is built in just one day!\\
What genius could have done this, you say?\\
It's Hideyoshi, Hideyoshi we praise!\\
Who built the castle in just one day, wheee!\\
It's Hideyoshi, Hideyoshi we praise!\\
He built a castle in just one day!!
* DesperationAttack: When a character's health bar is red, they can use a True Musou Attack, which is more powerful than normal and has the fire element attached. The Musou Gauge also charges gradually while HP is low.
* DoubleJump: The ninja characters have this ability. Since ''SW'' is hardly a platforming-oriented series, its main use is to allow the player access to certain "ninja paths" that are too high up for most characters, which can significantly aid mobility in a few missions.
* EarlyInstallmentWeirdness:
** The first game had castle stages where you play your character alone without allies. Depending on your perspective, this might not be a bad thing, and actually offer a fresh challenge, but as it proved divisive it was cut from subsequent entries.
** The first game also gave all characters a ranged attack with limited ammunition (more could be found on the battlefield). Most characters used bows while Goemon used his BackpackCannon and Magoichi used his musket. This was completely dropped starting in ''Samurai Warriors 2''.
** The first Empires expansion, ''Samurai Warriors 2: Empires'', is a meta example: while there's nothing especially strange within the game itself, it was released ''before'' 2's ''Xtreme Legends'', which is the opposite of how it's usually been done.
* ElaborateEqualsEffective: Played straight with the various weapons.
* EscortMission: Hampered by bad AI, par for the course with any others.
** Particularly noticeable in the first game if playing on the Oda side at Honnouji as anyone except Nobunaga, as when he's a NPC he absolutely ''insists'' on killing any and all enemy peons in the way instead of high-tailing it to the escape point.
** ''Chronicles'' gives the player options for making these significantly easier or harder; when you can play as the character you're supposed to be escorting, you can avoid all enemies and run to the objective. The same applies when the objective is for the character to escape the battlefield, but this has the downside of giving you one less playable character for the rest of the mission.
* {{Flanderization}}: Par for the course with Koei and expanding character rosters.
* GameplayAndStorySegregation: Playable characters can be unlocked for use as subofficers, albeit only useable one at a time. This makes it very possible to be say, fighting against Mori Ranmaru ''alongside Mori Ranmaru''.
* GuideDangIt: Getting your ultimate weapons. All of them involve doing very difficult things at very specific points in the battle on Hard or greater difficulty. And there's ''no hint whatsoever'' in the game itself about what you're supposed to do.
** ''3'' is a bit better about this: you just have to complete every (usually optional) tactical advantage objective in a certain battle on Hard or above. ''Which'' battle is still guesswork, however.
** In ''Chronicles'' the fourth weapon will be granted after completion of a mission with a gold background. It will almost always be in a mission of particular significance to the character, such as "Chaos in Iga" for Hanzo and the Conquest of Odawara for Hideyoshi. If a character is only playable (prior to being unlocked) in a single mission, such as Okehazama for Oichi, that's probably where the weapon is. Sometimes the hidden requirements for the gold mission are obvious - if a mission pop up says "Don't let any allied officers die!" that's a helpful clue. Others - such as claiming all strongholds - are not.
* GrappleMove: some characters have grab moves in their movesets. like [[FragileSpeedster Nene]]'s unblockable SpinningPileDriver grab move (though it's pretty weak). The Grabs' main advantage is that they are unblockable, with the obvious disadvantage of being rather hard to aim due to the combat being done in three dimensions.
* HardModePerks: Like in DynastyWarriors, you get better weapon/item drops and increased stat gain.
* HistoricalBadassUpgrade: Most of the cast. Granted, some of those ancient warriors were actually pretty badass on their own....
* HistoricalHeroUpgrade: A rather surprising treatment of UsefulNotes/OdaNobunaga from the second game on (for [[AntiHero certain values of hero]], anyway).
* HistoricalVillainUpgrade: UsefulNotes/FuumaKotaro may not have been a nice man, but he certainly wasn't a chaos-worshiping {{Troll}} in real life. It's averted, on the other hand, with Chronicle 2nd newcomer [[UsefulNotes/YagyuJubei Yagyu Munenori]]. He's been a victim of the trope so many times (''especially'' {{Onimusha}}), but for his debut, he's a willing supporter of the Tokugawa clan's efforts to end the war, and is all around a just, virtuous, badass swordsman.
* HitStop: The action slows significantly for dramatic reasons whenever an objective officer is defeated.
* HollerButton: The ability to summon a horse. If you don't have one, a generic one will appear. This was originally exclusive to Keiji, Yukimura and Toshiie, but the third installment made it universal. In ''Chronicles'', this ability is exclusive to the Green character, which is always the PlayerCharacter by default.
* ImprobableWeaponUser: Yoshimoto Imagawa kicks a Kemari (ancient oriental soccer ball) in almost all of his moves. His main weapon is a simple cutlass/sabre though. Oichi uses a Kendama (child's puzzle toy) in her first appearances, but from the third game on, she switches to a bunch of barbed chakra. Shingen Takeda uses a fan. That one did actually occur historically, although only once, in a single incident.
** Oichi's case is explained in the interlude, where it clearly states she took ahold of the first thing she could find to use as a weapon. And her weapon behaves like a MACE.
* KatanasAreJustBetter: Surprisingly few characters use a katana, actually, but those who do wield them to great effect.
* KeyStoneArmy: Scripted twists (such as body doubles and dramatic entrances) aside, as soon as the commander of the opposing force retreats clutching his side/keels over dramatically, the rest of his army beats it regardless of numbers.
** Of course, with how many of them you were likely cutting down before defeating the commander, it's amazing they wait that long to get out of your sight.
* LimitBreak: In ''4'', using a Musou Attack while Rage is active results in the devastating Musou Frenzy.
* LeeroyJenkins: If you're not the one Leeroy-ing into the crowd, expect one or more of the AI-controlled officers to charge recklessly and then necessitate you bailing them out. There are even a few stages that ''penalize'' you for getting ahead of yourself. ''Chronicles'' has several missions that are only accessible through doing this, such as the mission to kill Asakura at the start of Kanegasaki (once he starts marching, killing him is the only requirement to complete the scenario, not any specific objective).
** And a very unusual case of the game forcing you into one: at the end of Yukimura's story mode, he decides the final battle a lost cause, the game invalidates the defeat conditions and declares everyone but you expendable, a path straight to the enemy camp (but swimming in enemy soldiers) opens up, and in [=SW3=] your items are disabled. Why push you down the road of a totally reckless charge? Because historically, ''he actually did that''.
** Nagamasa Azai, Battle of Anegawa. Even if he is exhausted, he will continue pressing the attack until he is forced to retreat or he forces nobunaga Oda to retreat.
--> '''Nagamasa Azai''': ''"This is it. This will be my final attack!"''
** Nene's Dream, Melee at Sekigahara. even with Okuni and Kobayakawa on your side, you STILL end up doing most of the fighting.
* LoveAcrossBattlelines: Oichi and Nagamasa in some scenarios.
* MiyamotoMusashi: Playable in several installments.
* MoraleMechanic: The series eats and breathes morale. Morale determines who wins the battles when you're not in the area, and can make enemies harder to fight if they have a lot of it. You can reduce overall enemy morale and raise your own by killing troops, defeating enemies, and activating (or preventing) certain events. To take it even farther, individual troops have their own morale. Killing a troops leader causes him to run off. Defeating an officer has the potential of making everyone run.
* MookMaker: Strongholds serve this function, providing reinforcement troops to whoever holds them. They change hands whenever the other side kills the Guard Captain unit defending them.
* MovingTheGoalposts: Tachibana (of all people) pulls this on you in the third-to-last normal mission in ''katana''. Never mind that the part up to it is a bit of a GuideDangIt as to how you're supposed to strafe, no, she wants you to defeat 30-ish enemies [[FakeDifficulty without any attack successfully landing on you.]] The enemies do include [[GoddamnBats Kunai-throwing ninjas]]. Fortunately, she doesn't make you fight her without taking damage, saving it from becoming ThatOneLevel.
** More generally, this will sometimes happen in the main games, where you defeat the enemy commander only for reinforcements to arrive at that very moment and the stage's goal change to defeating ''their'' leader.
* {{Multishot}}: Several characters have this capacity, such as Motonari Mori with his wrist-mounted crossbow.
* NamesToKnowInAnime: NobuyukiHiyama voices Date Masamune AND Fuma Kotaro, once again proving that he's no PigeonholedVoiceActor.
* NameOrderConfusion: For some reason, the localized versions use Western name order. This is particularly jarring in the entries that aren't dubbed, as the way the name is presented in the dialogue box contradicts the voice track.
* NeverASelfMadeWoman: [[JustifiedTrope Justified]] as it's (mostly) based on historical events in 1500s Japan.
* {{Ninja}}: Kunoichi, Hanzo, Kotaro, and Nene. There are also ninja mooks.
* OffModel: A custom warrior using a moveset with a unique mounting animation can result in very obvious clipping into a horse's back if the models are of different size.
* ThePowerOfFriendship: Naoe Kanetsugu goes on at length about it. Several characters tell him to shut up.
* PreAssKickingOneLiner: As standard for a ''Warriors'' game, used for full effect during [[CallingYourAttacks True Musou attacks]].
* PrettyInMink: Some of the clothing options (at least for original characters) include a cape and hat trimmed with white fur.
* [[AutoScrollingLevel Rail Shooter]] [[DoesntLikeGuns With A]] [[KatanasAreJustBetter Katana]]: Samurai Warriors Katana for the Wii.
* RedshirtArmy: Pretty much who you fight save for the occasional officers, most of which end up as merely EliteMooks at best.
* {{Sarashi}}: [=SW3=] provides this in the form of the female Create a Warrior model who can have half a kimono top and a sarashi.
* ScrewThisImOutOfHere: Many battles will have this occur when it turns against one side and the commander decides it's time to retreat. In ''4'', once you beat the enemy commander all remaining generic characters on that side will immediately panic and run for the nearest spawn area, as well.
* SerratedBladeOfPain: Ginchiyo Tachibana. All her weapons are barbed katana with a lightning motif.
* StraightForTheCommander: Frequently a viable means of finishing a scenario immediately. In ''Chronicles'' it's the only practical means of getting all friendship events due to the sheer number of them available.
* StockNinjaWeaponry: Hanzo wields a Kusarigama in battle. Other ninjas include Kunoichi and Nene (daggers) and Kotaro Fuuma (clawed gauntlets).
* SuperMode: Rage mode in ''4'' gives the user a huge power boost and makes them completely invincible for the duration of the effect, at the cost of the entire Spirit Gauge.
* SuperMovePortraitAttack: ''3'' features cut-in portraits for characters using True Musou attacks. ''4'' features more traditional zoom-ins for Musou and True Musou attacks while reserving the cut-in portraits for activating Rage Mode.
* SwordAndGun: After ''1'', UsefulNotes/DateMasamune uses a pair of flintlock pistols in conjunction with a cutlass. In addition, the male player character in the ''Chronicles'' games uses a large katana in conjunction with a rifle. This moveset was carried over into ''4'' as one of the default weapons for custom characters.
* ThemeMusicPowerUp: Tadakatsu, following in [[VideoGame/DynastyWarriors Lu Bu]]'s tradition.
** That specific example aside, it's also common throughout the series for a TriumphantReprise of the game's main theme to kick in when victory is near.
* UnexpectedGameplayChange: Some requests in Survival Mode contain stealth missions. Also, Sugoroku.
** Magoichi occasionally has sniping missions.
** Cannoneering sub-missions in the third game.
* VariableMix: The background music grows quiet when there are no enemies to beat up nearby.
* VeryLooselyBasedOnATrueStory: This fluctuates with each game, but it keeps certain points very much intact - namely the deaths of Nobunaga, Mitsuhide, and Hideyoshi are always kept at when they're supposed to be, unless you're playing as them.
* VirtualPaperDoll: Most games in the series allow the player to make their own custom Edit Characters. The options for them are rather restricted until [=SW4=], which uses a similar character creation system to ''VideoGame/DynastyWarriors 7 Empires'', allowing players great control over the appearance of their characters and choice of whichever weapon they want (except for Kotaro's gauntlets).
* WeaponizedBall: Oichi has her EpicFlail Kendama, Kanbei's {{Energy Ball}}s, and Yoshimoto's Kemari Ball.
* WhatIf: ''Chronicle 3'''s story will branch into hypothetical scenarios if certain conditions are met, such as "What if Yoshimoto survived the Battle of Okehazama?", or "What if Shingen didn't die on the way to the capital?"
* [[WorldOfBadass World Of]] [[WorldOfHam Badass Ham]]: [[VideoGame/DynastyWarriors Par for the course]] for a Koei game.
* YouALLLookFamiliar: There are hundreds of generic NPC officers with nothing but names to differentiate them.
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