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Brother Sister Incest / Video Games

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  • This is heavily implied with Cesare and Lucrezia Borgia in Assassin's Creed: Brotherhood. Cesare kisses his sister Lucrezia in a lover's fashion before a military expedition in Romagna, is receptive to his sister's... suggestions, and it's implied that the whole chain of Memories where Ezio must save Pietro, Lucrezia's admirer, from Cesare's personal assassin Micheletto Corella are all because of Cesare's jealousy, albeit deliberately provoked by Lucrezia who mistakenly believes that he's cheating on her with the captured Caterina Sforza. If all this wasn't enough, one of the accusations given to Cesare when he's imprisoned by the men of Julius II is of incest.
  • There are no specific examples, but this was mentioned in Bully by Pinky when she brought up how her parents wanted her to marry her cousin. She went on to elaborate that her family used to keep relations between brothers and sisters before it was outlawed, with an offhand mention that her aunt has four thumbs.
  • Crusader Kings II has brother-sister Royal Inbreeding possible (and encouraged) for Zoroastrian and Messalian characters. The Seduction Focus also lets you target siblings, though the success rate is low and the consequences for being caught can be severe (unless you are Zoroastrian or Messalian, where it's treated as no worse than seducing anyone else).
  • Played with and ultimately subverted in Cute Knight, where the PC can either marry Prince Kirelan or take her royal position as his sister, Princess Alexandra. But it turns out she's not really Alexandra, she's just faking. But then it turns out that she IS a princess by blood after all, she's Alexandra's older sister. But THEN you realise that it's okay, because Kirelan's adopted!
  • Janus and Lela in Divine Divinity. And they have sex when they're only (pre-)teens. Thankfully, it's only told, and not shown.
  • Mike Laidlaw felt the need to point out that you can't have Hawke sleep with either of his/her siblings in Dragon Age II. In case you were wondering. Not that it stopped people from requesting it.
  • Though it was Bowdlerized to remove as many references to incest as possible, the idea was too central to the plot of Drakengard to throw it out completely. The game has only one or two allusions to it.
  • In Duel Savior Destiny Mia is one of the available options and the only girl Taiga will not pursue, though it later turns out that this isn't because he's not attracted to her. She's simply genuinely off limits to him as a sister until she basically rapes him into deciding that it's pointless.
  • Fallout 3:
    • In the add-on Point Lookout, the Swampfolk are a race of redneck mutants that used to be humans, but through inbreeding they mutated into violent and primitive humanoids.
    • The small hamlet of Andale in the Capital Wasteland seems harmless enough, with two cheery families. Then you talk to young Junior Smith who tells you that he doesn't want to marry the little girl, Jenny Wilson, across the street. More than it just being a case of cootie-fears, he reveals that part of the reason it's weird is because his father is the brother to Jenny's father which makes him "... something, I'm not sure what." If for some horrifying reason you're not bothered by the fact that Andale's residents have been, for the last few incestuous generations, killing wastelanders foolish enough to travel within their territory and then eating them, then you can learn from Martha Wilson that the old coot living next to them is father to both her and Linda Smith (Junior's mother). That makes them double first cousins which is as bad as being half brother and sister, but not as bad as 3/4 brother and sister (aka, sibling cousins).
  • Fatal Frame:
    • In the fourth game, it's strongly implied that Ayako was the result of an incestuous relationship between You Haibara and his sister Sakuya.
    • The first and third games had always had one sided Incest Subtext from Miku directed at her brother Mafuyu, but what with him being dead and all, it was unclear if it was mutual. The fifth game moves it to full blown text with the revelation that Miku's daughter Miu is a Shadowborn, a child conceived between the living and the dead. It was implied that Miku and Mafuyu's spirit conceived Miu at the end of Fatal Frame 3 (which the guidebook confirmed). It's also revealed that, when she sensed she was close to death, Miku entered a ghost marriage with Mafuyu to ensure they'd be together in death.
  • Final Fantasy XIV seemingly offers us an "Adam and Eve" example with the dragons Bahamut and Tiamat. Both are among the seven children of Midgardsormr and travelled together to found the Meracydia Horde. Their love ended in tragedy however when Bahamut was felled by the Allagan Empire and Tiamat was talked into trying to resurrect her mate by the Ascians, resulting in the bastardized Primal Bahamut. This is averted however - dragons in Final Fantasy XIV lore are single-sex alien creatures that reproduce asexually, so there is no associated risk or taboo in dragon culture.
  • Fire Emblem:
    • Fire Emblem: Genealogy of the Holy War:
      • Deirdre and Lord Arvis, who marry in between Chapters 3 and 4 (though she is only confirmed to be his bride at the end of Chapter 5). Having the two hook up and breed is actually a part of the Big Bad Manfroy's plan to create a vessel for his Dark God, Loptous. And through Mind Control used on Deirdre and Arvis not knowing they're half-siblings, it happens. It is hinted in a few early conversations viewable by the player (though unknown to the protagonist) that this is an incestuous marriage being plotted. And bits of dialog regarding other characters crop up, presumably to get the player's mind on the topic of incest and help him figure out what the villain's plot is.
      • This recurs in the second generation when Julia, daughter of Arvis and Deirdre, has a crush on Seliph, son of Sigurd and... Deirdre, too. Because the first half of the story wasn't Greek-Tragedy enough.
      • Prince Eldigan and Princess Lachesis are re-written this way in the Oosawa manga adaptation, with them acknowledging in their last talk that they're in love (with Lachesis almost asking Eldigan to be her first, but he refuses to taint her, settling for an implied Last Kiss) and hoping there's a Reincarnation Romance deal out there. In the game itself, there are some NPCs that remark on how unusually close Lachesis and Eldigan are, and pairing of Lachesis's daughter Nanna with Eldigan's son Ares in the second generation will have Nanna show Ares a letter confirming that Lachesis had romantic feelings for Eldigan, although Eldigan's feelings are left much more ambiguous than they are in the manga.
      • Pairing Lana and Lester with Faval and Patty at first seems to fall under Kissing Cousins, being the children of Edain and her sister Brigid respectively. However, Brigid and Edain are identical twins, meaning that their children are genetically indistinguishable from half-siblings. So while these pairings remain under Kissing Cousins in the social sense, in the biological sense they fall under Brother–Sister Incest.
    • Fire Emblem: The Sacred Stones: Siblings Ephraim and Eirika have noticeable Incest Subtext and Dub Text throughout the game (their signature weapons are named after incestuous figures, for starters), with several characters taking note of their closeness. While they haven't done anything in-story, Fire Emblem Heroes reveals there are people who believe enough to spread rumors about it.
    • In Fire Emblem: Awakening Aversa calls Robin "big brother" in their supports seemingly solely to appeal to this fetish, as they are in no way related; Aversa having been enslaved by Robin's father as a teenager whilst he was sitting in a field not knowing that he even had a father. This is more prominent in the Japanese, the english version has Aversa only do it once to annoy Robin.
    • Fire Emblem Fates: Corrin and Azura are allowed to marry their siblings from Hoshido or Nohr, and even have children with them. While they aren't actually blood-related to their siblings, they think they are, and ironically are related to each other (though they're cousins rather than siblings). Also, quite infamously, the artbook revealed that the Incest Subtext between Leo and his half-sister Camilla was just regular text on his part, though the pairing is not possible in-game.
  • This is possible with the animals in Harvest Moon: A Wonderful Life. It's one of the few games to have male animals (instead of giving Miracle Potions to female animals). If you have two adult animals of the opposite sex together, the female can end up pregnant even if you didn't order a Miracle Potion. The game doesn't note whether the animals are related or not so you can wake up one day and find a female impregnated by their brother, son, or any other related male.
  • In Jagged Alliance 2, you can run into a family of heavily inbred rednecks. One of them will tell you that the inbreeding is what keeps them strong. For some reason they have run out of women though and want you to give them one of your party in exchange for guns.
  • In the Sega CD game Lunar: The Silver Star, protagonist Alex and his adoptive sister Luna have apparently been in love and have more or less betrothed themselves to one another since they were practically infants. No need to worry, they're Not Blood Siblings (as Luna, as it turns out, is the reincarnated creator-goddess Althena, either being a routine or the only reincarnation depending on what version of the game you're playing), but some critics have noticed that these two should've been affected by the Westermarck Effect by now...
  • In Max Payne, one of the Mooks is watching a soap opera where a woman reveals to her lover that she is... his long lost sister!
  • Possibly played with with Mega Man and Roll. In the original series, they're brother and sister (in the sense of being robots with the same creator). But in Mega Man Legends, they're Like Brother and Sister, with Mega Man being an Accidental Pervert to Roll (although in this universe they aren't related, and Roll is a human while Mega Man is not). In Mega Man Battle Network, they are actually dating, but are also unrelated. And in Marvel vs. Capcom, Roll is described as Mega Man's sister at one point, then as his girlfriend later! It was due to a translation error, but it's still makes it the only game where incest truly is suggested. Some Mega Man (Classic) games (such as Mega Man Powered Up) have implications that Roll likes Rock romantically. Humorously enough, the Ruby-Spears cartoon (which came out years before most of the examples described here) briefly poked fun at this concept in its pilot:
    Mega Man: (upon meeting Roll) She's pretty!
    Dr. Light: Yes. (quickly) And you can think of her as your sister.
  • In Metal Gear Solid 2: Sons of Liberty, Emma Emmerich, stepsister of Hal Emmerich... well, to quote Wikipedia: "It's revealed through conversations between her and Raiden and later between her and her brother before she dies that she has strong romantic feelings towards Hal and wished for him to see her as a woman and not his sister." Which, of course, never happened, because Otacon was being sexually abused by his stepmother/E.E.'s mother.
  • In No More Heroes it is implied that Travis and his half-sister Jeane might have been in that sort of relationship. Travis was completely unaware of the situation he was in, and is appropriately shocked and horrified upon finding out.
  • Pokémon:
  • Rapelay allows the player to force the two sisters to have sex with each other, as well as their mother, the player, and the player's friends.
  • Red Dead Redemption II has Bray and Tammy Aberdeen, a seemingly normal couple who will invite the player inside their home for a meal and a drink. Their affection for each other is very apparent, but it's quickly revealed through conversation that they are brother and sister. The player character (either Arthur Morgan or John Marston) is appropriately freaked out by this revelation as his expression shows. Adding to that are several hints that they killed their parents. Then they drug you, rob you, and dump you in an open mass grave with a corpse not far from their property.
  • Resident Evil – Code: Veronica? The relationship between siblings Alfred and Alexia Ashford is by far the creepiest part of the entire game.
  • Seaman has a complicated biological evolutionary chain that its titular animal follows, but each step has one of the Seamen mating with one of his siblings, then passing away while the female goes on to bear the next generation, which repeats the process.
  • In The Sims 2 half of the neighborhood of Strangetown is made up of the Curious Family. But since EAxis didn't bother to set all the relationships correctly, many players have unwittingly married the Curious brothers to their older half-sisters, Lola and Chloe (Curious) Singles. It's also possible for the sisters to have romantic interactions (without cheats) with their surviving father (PT #9 Smith), and probably everyone they're related to that's old enough. Thanks, EAxis. It could be a squicky Easter Egg; Strangetown, Curious family... Makes you think.
  • This was the original conception of Summertime Saga, until Patreon objected to the direction the dating sim was taking; the Main Character and his sister Jenny have now been Retconned to be completely unrelated people who happen to rent rooms in a shared house which is owned by a woman who now only looks as if she is their mother, but is also unrelated to either.
  • Teased but averted in Super Robot Wars W. When Aria and Regulate join the Valstork family, Kazuma thinks that Aria is rather cute... until Regulate tells him that she's happy that Kazuma thinks of Aria as a sister and she WILL be glad if he keeps that feeling (in an extremely cold voice). Since Regulate reminds him of his mother, he quickly backs down, and this ship never sets sail.
  • There is a skit in Tales of the Abyss in which Natalia and Anise question Tear about her 'type' of guy. Although unknown to the latter two about their real relationship, they seem to think it quite obvious that Tear was attracted to Van, which caused said melodist to freak out and run away from the conversation. It really didn't help that he was also her surrogate father.
  • In Twelve Minutes, the married couple turns out to be half-siblings. The time loop turns out to be a figment of the husband's imagination as he tries to envision a future when they can be together.
  • Valkyrie Drive -Bhikkhuni- Ranka Kagurazaka really, really loves her sister Rinka. It comes to a point where she has already planned out their entire wedding and honeymoon, she only needs to find a country where two sisters can get married. In an unusual move for the trope, they are actual, blood-related siblings.
  • In Viva Pińata, (despite how it looks) this can happen veeery easily. Heck, getting the Fourheads practically requires it! (Unless you want to put in way more effort than necessary, of course.) No wonder it's a mutant... product of repeated incest, and you have to bash its egg open early. Parodied on VG Cats when Leo kills a piñata's parents and feeds them to it. Aeris is shocked he did this and Leo emphasises that they were "his inbred parents".
  • If you click the right window, you'll come across an example of this between Reed Hawke and his sister in Voyeur.
  • Very strongly suggested to have happened in Wild ARMs 2 between Lord Irving and his sister, to defeat the Big Bad (long story).

Alternative Title(s): Fire Emblem