''Gensou Shoujo Taisen'' ("Fantasy Maiden Wars") is a ''VideoGame/{{Touhou}}'' {{doujin}} game series in the spirit of the popular ''VideoGame/SuperRobotWars'' games, created by Sanbondo. The game is divided into four parts and loosely retells the story of every Touhou game from the 6th through the 12th, while attempting to create a more unified story between all of them.

The first part, ''Kou'' (Scarlet), retells the story of ''Embodiment of Scarlet Devil'' and has been translated into English by Deranged. The patch can be found [[http://www.shrinemaiden.org/forum/index.php?topic=11076.0 here]]. The second part, ''You'' (Mystic), combines ''Mountain of Faith'' and ''Perfect Cherry Blossom'', the third part, ''Ei'' (Eternal), combines ''Imperishable Night'' with ''Subterranean Animism'', and the final part, ''Yume'' (Dream), combines ''Undefined Fantastic Object'', ''Mystic Square'', and an original arc.

!!This series contains examples of:

* AntiFrustrationFeatures: From ''You'' onwards, having allied units shot down no longer penalizes your acquired funds, after all, [[NintendoHard you're going to need every Point you can get]].
* BackgroundMusicOverride: Like in SRW, bosses will always have their theme play during battle and certain stages play special music that continues over the regular battles. Also, certain attacks such as Reimu's Fantasy Seal or Marisa's Master Spark have their own themes that play over even boss themes.
* BigDamnHeroes: Prevalent all throughout the games. In particular, the Scarlet Devil Mansion's inhabitants tend to show up as reinforcements during climactic battles. In ''Kou'', [[spoiler:Sakuya appears to assist you on Remila's orders when fighting Flan]]. In ''You'', [[spoiler:Patchouli and Koakuma show up to lend their aid against Sanae]], in ''Ei'', [[spoiler:Remilia flies in to save Sakuya when fighting Eirin]], and in ''Yume'', [[spoiler:Byakuren saves Shou from Yumeko and Shinki]].)
* BittersweetEnding: How ''Ei'' ends. The heroines ''barely'' manage to stop [[spoiler: a berserk Utsuho from razing the surface.]] However, the one responsible for the crisis in the first place is still unknown ([[spoiler: Yuuka]] knows, but she's not willing to share aside from hints). In addition, [[spoiler: Koishi's memory appears to be getting worse, to the point that she doesn't know how to get home anymore.]]
* BraggingRightsReward: Beating Yorihime in stage 49 gives you a "Lunar Magatama", which does nothing except say that you beat Yorihime in stage 49.
* BroadStrokes: In general, the games stick to the general story of the source material, but with some liberties taken. From the start, characters that don't appear in the game the story arc is based on appear and team up with the heroines (which is a divergence in itself).
** ''Kou'' retells the story of ''Embodiment of Scarlet Devil'', but there's a running sideplot of Youkai Mountain dealing with the Moriya Shrine and its residents arriving, with Sanae showing up during the incident to judge Reimu for herself. Youmu also shows up looking for ways to make cherry trees bloom, foreshadowing Yuyuko's plan to revive Saigyou Ayakashi in ''Perfect Cherry Blossom''.
** The first half of ''You'' is a retelling of ''Mountain of Faith'', a level right afterward is based on ''Immaterial and Missing Power'', and the second half retells ''Perfect Cherry Blossom''. [[spoiler: Shou and Nazrin appear in the second half and join the heroines and Marisa ends up accidentally getting sidetracked to the Former Hell. The two plot points converge in TheStinger when Marisa leads Shou and Nazrin to the Palanquin Ship and they free it.]]
** Though the divergences get broader in ''Ei'', the first half is based on ''Imperishable Night'', the second half is based on ''Subterranean Animism'' [[spoiler: and in between is a small story arc based on ''Silent Sinner in Blue'']]. Most significantly, [[spoiler: The Palanquin Ship is used in this game as a battleship unit with the Buddhist group operating it. The heroines are well aware of their goal to free Byakuren. Nue shows up, bitter that she was left behind by Murasa and shows up from time to time to cause trouble. And the ''Silent Sinner in Blue'' arc doesn't have the GambitPileup that was in the original story and instead, the heroines are asked to deliver a letter to the Watatsuki sisters by Eirin, though things are complicated by the letter being misplaced.]]
* TheCavalry: [[spoiler:Mima]] appears to save Marisa in the Underground.
* TheChessmaster: [[spoiler:Kanako and Suwako]] appear only in cutscenes in ''Kou'', seemingly planning their move for ''You''.
* CombinationAttack: Marisa and Alice's [[FanNickname Malice Cannon]]. ''You'' adds a Reimu/Marisa combination as well.
* CombiningMecha: After being defeated individually, the Prismriver Sisters huddle together to become a single unit, which is treated mechanically like an SRW CombiningMecha. [[spoiler:This results in the Three Fairies of Light deciding to "combine" as well... in a scene which parodies ''Anime/TengenToppaGurrenLagann''.]]
* ContinuityPorn: The game blends the story of the official Touhou games, including the PC-98 continuity, into one.
* CooldownHug: Happens ''twice'' in ''Ei'', first with [[spoiler:Remilia hugging a berserk Flandre in a special attack-animation cutscene, and later with Rin and Utsuho, although the latter only partially succeeded because Utsuho's power was no longer under her control even after she regained awareness.]]
* CulturalTranslation: The subtitles "Kou", "You", and "Ei" come from "'''Kou'''makyou", "'''You'''youmu", and "'''Ei'''yashou", the Japanese parts of the first three Windows Touhou games' names (which are relatively obscure in the English fanbase). The FanTranslation renders them as "E" and "P", from their English portions, "'''E'''mbodiment of Scarlet Devil" and "'''P'''erfect Cherry Blossom", which more closely fits the naming scheme of the ''VideoGame/SuperRobotWars'' games.
** One of the quit game skits has a Kedama giving the player a tip about being careful around spell card effects after a long string of ellipses, referencing how [[Anime/MobileSuitGundamWing Heero]] does the same in one of the quit game skits of ''[[VideoGame/SuperRobotWarsAlpha Super Robot Wars Alpha 2]]''. Since Alpha 2 never got an English translation, the English patch of the game adds "it can hurt like hell" at the end to make the reference more obvious.
* DefeatMeansFriendship: A majority of your units are recruited only after you defeat them in battle.
* DiabolusExMachina: After taking down Utsuho and talking her out of her plans of world domination [[spoiler: Shiro shows up with a swarm of Kedama, and attack Utsuho in order to get rid of the Yatagarasu. This causes Utsuho to lose control of her powers, threatening to cause a [[GoingCritical nuclear meltdown]].]]
* DiscOneFinalBoss: [[spoiler:Remilia]] in ''Kou''. [[spoiler:Kanako and Suwako]] in ''You''. [[spoiler:Eirin and Kaguya in ''Ei'']]. [[spoiler:Shinki in ''Yume'']].
* TheDreaded: [[spoiler:Yuuka.]] And if you attack her, you'll see just why everyone is afraid of her.
** [[spoiler:If you're feeling gutsy, have Marisa attack her with Master Spark.]]
** In ''Ei'', the party has a similar reaction to [[spoiler:Yorihime.]]
* DualBoss: Minoriko and Shizuha, [[spoiler:Kanako and Suwako,]] [[spoiler:Dream Mima and Dream Byakuren]].
** WolfpackBoss: The three Fairies, [[spoiler:The Prismriver Sisters.]]
* EleventhHourRanger: [[spoiler:Sakuya]] in ''Kou''. [[spoiler:Youmu]] in ''You''. Both [[spoiler:Rin and Nue]] in ''Ei'', one of whom has a special ability specifically designed to counter the final boss. [[spoiler:Yuuka]] in ''Yume''.
* EleventhHourSuperpower: [[spoiler:Reimu and Marisa CombinationAttack in ''You'']] is acquired two scenes before the last boss.
** In ''Ei'', [[spoiler:Reimu acquires the new spellcard "Fantasy Nature" just in time to stop [[HopelessBossFight Yorihime]] from defeating the party.]]
** In ''Yume'', [[spoiler: Reimu and Marisa's CombinationAttack gets upgraded to defeat Meeko.]]
* FelonyMisdemeanor: Sanae interrupts a party at the Hakurei Shrine to reveal a "shocking secret" about Reimu which will break everyone's trust in her forever. [[https://www.youtube.com/watch?v=SnAD34rn-Lc#t=6m2s The reaction was not what she was expecting.]]
* FinalBoss: [[spoiler:Flandre]] in ''Kou''. [[spoiler:Yukari]] in ''You''. [[spoiler:Utsuho]] in ''Ei''. [[spoiler:Makura]] in ''Yume''.
** FinalBossPreview: You meet [[spoiler:Flandre]] as an NPC as Marisa. [[spoiler:You can beat her, if you can take her down with Marisa only.]] You also meet [[spoiler:a pre-powered up version of Utsuho as one of the weakest bosses in the game, to foreshadow her character development.]]
%%* FragileSpeedster: Reimu, most Small size units, [[spoiler:Aya]].
%%* GlassCannon: Marisa, Sakuya. Taking after [[Manga/GetterRobo Shin Getter 1]], [[spoiler: Flan falls under this too.]]
* {{Leitmotif}}: Everyone has at least one. Sakuya, Nitori, [[spoiler: Youmu, Aya and Sanae]] have different ones both as an enemy and as an ally. The three fairies gain one for their CombinationAttack [[spoiler: and another one in CombiningMecha form.]]
* HopelessBossFight: The fight with [[spoiler:Yorihime]] in ''Ei'', if you choose the dialog options that let her use her full power on you. She has enough evasion to dodge anything but an AlwaysAccurateAttack, and can attack more than once per turn with attacks that exceed the game's accuracy limit. However, you can time out all her cards and beat the mission by running away.
* LastEpisodeThemeReprise: [[spoiler:The main theme gets an orchestrated reprise at Makura's final spell card.]]
* LightningBruiser: [[spoiler:Suika.]]
* LordBritishPostulate: In ''Kou'', it's possible to defeat Sakuya in chapter 5 and Sanae in chapter 7 if you can reduce their HP to zero in one hit without going below a certain threshold beforehand. They'll still escape as per the story, but you'll get items and EXP and such for a boss kill.
** In ''Ei'', when you fight the protagonist you didn't choose, your objective is only to shoot down Reimu/Marisa; however, the more powerful characters such as Yukari and Yuyuko/Yuuka and Mima will sit in the back and not engage your units unless you pursue them.
* LordErrorProne: Sanae, to a hilarious extent.
* {{Medley}}: The last stage track in ''Kou'' contains fragments of ''every single stage theme'' from Embodiment of Scarlet Devil, plus the title screen theme.
** The last stage of ''You'' does the same thing with songs from Perfect Cherry Blossom.
** Similarly, the stage theme for the final battle of Eientei in ''Ei'' the stage themes of Imperishable Night. [[spoiler: Though it's not the final stage this time.]]
* MagikarpPower: Two examples in ''You''
** When Lily White joins your team she has only a single attack, low stats, and is practically an EmotionlessGirl; she powers up (and [[GenkiGirl brightens up]]) significantly once you get closer to where all the Spring was taken.
** The Three Fairies of Light increase in power [[spoiler:by learning how to [[CombiningMecha group together into a single unit with the sum of their stats]]]].
* MauveShirt: Tengu A, Tengu B and Kappa C in ''You'', three recurring enemies who are identical to standard {{Mooks}} of their species but have a few lines of dialogue and slightly higher stats. Kappa C stands out for also [[CharClone being red rather than blue like the other kappa, and claiming to be three times faster]].
* MidseasonUpgrade: Nitori upgrades to [[Franchise/{{Gundam}} Full Armor Nitori]] in ''You'', which gives her MoreDakka and a {{BFG}} WaveMotionGun. [[MechaExpansionPack The upgrades can be removed if you want Nitori to take up less space in your team.]]
** Both Reimu and Marisa change sprites and movesets (and theme music) partway through ''Ei'', just in time to use them against each other in the obligatory LetsYouAndHimFight from ''Imperishable Night'' stage 4.
%%* MightyGlacier: Most large size units.
* NiceJobFixingItVillain: In ''You'', the heroes are gathering allies to help them against the forces of Yokai mountain, Reimu and Keine asking Mokou, and Marisa and Alice asking the Scarlet Devil Mansion. However, the tengu tailing them decide to attack and make the respective people change their minds.
* NintendoHard: When its harder difficulty levels boast to have the same level of difficulty as the classic SRW games, you know you're going to catch hell. Also a partial case of IdiosyncraticDifficultyLevels
** In contrast Easy and Normal compare themselves to more modern games, Alpha and Alpha Gaiden.
* OriginalCharacter: [[spoiler:Meeko and Makura.]]
* ReadingsAreOffTheScale: Any enemy unit whose current HP is exceeds 10,000 will have both their current and max HP values replaced with question marks. Their health bar still shows the percentage of their health, though.
** Some of the older Super Robot Wars game [[https://youtu.be/z52H5RoYSjE?t=2m38s did that too]] so it might have been done on purpose.
** This happens in the plot as well when Keine measures Yorihime's spiritual energy after letting her use all her power.
* RecycledInSpace: Lampshaded in ''Ei'', chapter 48, which is titled "Gensou IN SPACE". Naturally this chapter is when the party [[spoiler:visits the moon]].
* SecretLevel: Completing ''Kou'' with both Reimu and Marisa's routes unlocks Sakuya's route, which consists of four levels and takes place after the main story.
* ShoutOut: ''Tons'', to ''VideoGame/SuperRobotWars'' itself as well as the countless mecha shows featured in the series, ranging from character dialogue, attack animations, to even musical nods.
* TheStinger: ''You'' has one where [[spoiler: Marisa helps Nazrin and Shou find the Palanquin Ship.]]
* SuspiciouslySimilarSong: Much of the game's soundtrack consists of Touhou tracks mixed to sound like particular SRW or mecha anime tracks.
* UnexpectedCharacter: [[spoiler:Elly and Kurumi. Shou and Nazrin in the second game.]]
* UnwittingInstigatorOfDoom: In ''Ei'', Reisen II (named Rabbit right now) meets up with Reisen first instead of Reimu like in SSiB, and attempts to get on her good side by claiming she's a fellow fugitive with lunar emissaries pursuing her. Instead, this freaks Reisen out, causing her to flee to Eirin and Kaguya to report to them, which leads into the IN part of the story.