Expanded Incest Mod

[HalfVampireDoughnut]

Expanded Incest Mod

View File

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Important: Now requires Lot 51's Core Library

This mod adds social features surrounding incest. It doesn't unlock incest. Wicked Whims and Inappropiate Unlock are REQUIRED.

 

I started making this mod well over a year ago, since I wanted more drama ingame. Then, I got distracted and dropped it, tried multiple times unsuccessfully to pick it back up, etc. Until now, that is. It seems I was a bit late, in that another mod that expands on incest was published since, but since I made this, I might as well post it. This mod has a different focus in some ways, so it should be made better by Forbidden Fruit rather than clash with it. I'm Also uploading a couple other minor mods in this post, including one I deleted.

 

There are two parts to Expanded Incest: The Core, and the clones add-on.

Content in Core:

• Things like having an incestuous dynamic with someone having more impact on sims.
• More reactions surrounding incest in various ways, an opinion system.
• 80+ social interactions. Most of them are hidden behind traits and other gameplay elements, though!
• 4 Incest-related attributes. Can be added under under Incest>Actions on the same sim you want to add them to.
• 6 computer interactions
• The ability for sims to develop crushes on family members, under Incest>Actions on the sim you want them to develop it on.
• Children of related sims can get the inbred trait, but the system for getting it is quite wonky. Don't rely on it. Regardless, it doesn't do much as of now. Theres a cheat (TestingCheats + Shift click) to add it just in case.
• Discovery (Enabled between sims without the incest attribute) and persuasion (For a sim with the attribute and one without). Both enabled under actions.
• Family play for the incest fetishist trait
• The ability to expose sims' relationships, also a bit wonky. 
• 2 CAS traits, Manipulative and Obsessive, with effects not exclusive to incest, because why not. (The actual reason why is that they started as incest attributes but it didn't make sense to keep them restricted to it as they were too general)
• I don't know if there's more. I just want to get this over with. I invite people to find out themselves

Clones Add-On (Requires Get to Work and Realm of Magic)

• 12 social interactions
• CAS trait, under lifestyle: Dopplebanger. Clone related. The game's geneology tracks them as siblings and you need the Incest attribute to romance them.
• Moodlets surrounding clone on clone romance.

 

Additional content warning: Besides what's evident in the title, there are a couple moodlets with passive suicidal ideation in this mod, particularly with the "Repressed" trait. When you expose a sim's relationship, there's also a chance they get notifications of harassment wishing death on sims. The obsessive and manipulative traits include toxic -some bordering on abusive- interactions.

 

Other two files:

 

"Vampires React to Periods": Requires Lot 51's Core library. Really small mod. Adds a couple of uncomfortable moodlets to vampires when they are around sims who are on their period. Self-explanatory.

 

"Bloodthirsty trait":  Requires Lumpinou's Mood Pack. An unserious trait that gives sims cartoonish murderous urges. Has a couple moodlets when killing sims in the Extreme Violence mod, too, but it's not necessary to have it.

 

I kept adding all these things while wishing to be able to finish already, but then only making it more difficult for myself to do so because apparently I'm like that. The mod might be a bit unstable, but right now I think I'm about hitting my limit right now. So I'll just post it.

 

---

• Submitter
  HalfVampireDoughnut
• Submitted
  12/09/25
• Category
  Other
• Requirements
  Expanded Incest Core: Wicked Whims, Inappropiate Unlock, Lot 51's Core Library
  Expanded Incest Clones Add-On: Wicked Whims, Inappropiate Unlock, Get to Work, Realm of Magic
  Vampires react to periods: Lot 51's Core Library, Wicked Whims, Vampires.
  Bloodthirsty Trait: Lumpinou's Mood Packl

 

[Zezé03]

I tried this mod (all three files) and I have all the required extras (moodpack etch) but it causes the loading issue that leads to the worlds screen.

Better Exceptions gives me Khlas's Male Interactions mod as an error (but I assure that mod works fine for me, it only appears in the logs when some other mod doesn't work, as in the case of this mod)

Does anyone else have the same problem as me?

[HalfVampireDoughnut]

26 minutes ago, Zezé03 said:

I tried this mod (all three files) and I have all the required extras (moodpack etch) but it causes the loading issue that leads to the worlds screen.

Better Exceptions gives me Khlas's Male Interactions mod as an error (but I assure that mod works fine for me, it only appears in the logs when some other mod doesn't work, as in the case of this mod)

Does anyone else have the same problem as me?

That is odd and should not happen, as I have played multiple times with these mods since uploading them, and have not gotten that issue. There also shouldn't be a conflict with other mods, as there are no overrides included. 

 

Multiple things to check:

-Is your game updated?

-Were my mods the only thing you added before loading up your game?

-Are the scripts at maximum one folder depth?

-Do you have the latest version of core library? The vampire pack?

-Does the exception mention my mods?

-Have you loaded the game with just my mods? You can do so easily by renaming your main mods folder Mods2 and making another one called Mods with just the files you want to check. Then, once you're done, you name the main one Mods again and delete the other. That way, you don't have to move anything. Don't save if you load a save where you're using more mods, though.

Edited December 10, 2025 by HalfVampireDoughnut

[HalfVampireDoughnut]

I'm not certain whether it's the reason Zezé03 might have encountered issues, but I kind of realized that there was one crucial question missing in my response, which would be the only factor that could cause such a thing given everything else is accounted for. That is, DLC related to the clone stuff.

 

So, I uninstalled GetToWork from my game and it seemed to not load households, though I didn't wait much. I didn't take out any other mods either, so it could be more things. But I think it's still likely to be an issue if you don't have those packs. I mentioned Get to Work and Realm of Magic as an afterthought in my main post, which was a mistake and something I should have looked into before posting. So yeah, I separated the files. If anyone else has encountered issues in a consistent way, that might be the reason. Please redownload.

 

 

 

 

[YAROSLAVDIK]

Thanks for your work,it's really a big system mod.

[HalfVampireDoughnut]

3 hours ago, YAROSLAVDIK said:

Thanks for your work,it's really a big system mod.

Thank you!

[ElTlacuache]

Are you planning to add a special interaction to convince a family member to have sex? And that after having sex, the Sim who was seduced will henceforth have the incestuous trait?

 

[HalfVampireDoughnut]

22 minutes ago, ElTlacuache said:

Are you planning to add a special interaction to convince a family member to have sex? And that after having sex, the Sim who was seduced will henceforth have the incestuous trait?

 

That's an interesting idea! I'll take it into account! 

[Z0mBieP00Nani]

Does this mod offer the nicest attribute as a discoverable trait or so you have to add it manually through the WW attributes menu?

[t h i s t l e]

Cool mod, not my style, but I like it .
I liked the references in the screenshots about Folgers Coffee and Nemlei Games, its look funny. I'm glad you've post it. Are you going to continue developing it, and if so, what are your plans? As I understand it, our mods should not conflict, even the reaction system I am currently developing.

 

Edited December 10, 2025 by ThistleInHeart

[Z0mBieP00Nani]

2 hours ago, ThistleInHeart said:

Cool mod, not my style, but I like it .
I liked the references in the screenshots about Folgers Coffee and Nemlei Games, its look funny. I'm glad you've post it. Are you going to continue developing it, and if so, what are your plans? As I understand it, our mods should not conflict, even the reaction system I am currently developing.

 

Perhaps a colab is in order?

[t h i s t l e]

20 minutes ago, Z0mBieP00Nani said:

Perhaps a colab is in order?

I don't know, I think it will be quite complicated. I looked at his mod, and it's very good, but I have a different vision for its implementation incest. I'm not saying that collab is a bad thing, but I can't imagine how it will be implemented and what HalfVampireDoughnut thinks about it (And his plans about develop a mod) .

But if everything stays the same, our mods will not work well in the future due to reactions to incest (2 buffs will appear at the same time.) and Inbred Children.

 

 

Edited December 10, 2025 by ThistleInHeart

[HalfVampireDoughnut]

4 hours ago, ThistleInHeart said:

Cool mod, not my style, but I like it .
I liked the references in the screenshots about Folgers Coffee and Nemlei Games, its look funny. I'm glad you've post it. Are you going to continue developing it, and if so, what are your plans? As I understand it, our mods should not conflict, even the reaction system I am currently developing.

 

Thank you, likewise!  I like that your mod goes deeper into more specific dynamics

For now I don't have any formal plans, I do want to add more things right now, but how many, I don't know. None of it would be overrides, but like you said if a feature is repeated, even if doesn't cause a conflict technically, in practice it kind of does. The one thing I can think of to do is making another version where I take out reactions and things that are redundant with your mod, or viceversa, so that people can have them at once. In any case, anything you want to talk about regarding compatibility, cross features, or anything, I'm open to it. 

More concretely, for the next update I'm thinking of adding things like "pretend family" play for incest fetishists, more buffs for pregnancy, and look into what Etlacuache said, but I'm still trying to figure it out. But yeah, I don't wanna commit myself to much right now because I wanted to take some pressure off by uploading the main things first. But I will try to post on this thread about what I'm working on when it starts shaping up into something concrete.

Edited December 10, 2025 by HalfVampireDoughnut

[HalfVampireDoughnut]

7 hours ago, Z0mBieP00Nani said:

Does this mod offer the nicest attribute as a discoverable trait or so you have to add it manually through the WW attributes menu?

Not as of right now, it needs to be selected

[t h i s t l e]

10 minutes ago, HalfVampireDoughnut said:

Thank you, likewise!  I like that your mod goes deeper into more specific dynamics

For now I don't have any formal plans, I do want to add more things right now, but how many, I don't know. None of it would be overrides, but like you said if a feature is repeated, even if doesn't cause a conflict technically, in practice it kind of does. The one thing I can think of to do is making another version where I take out reactions and things that are redundant with your mod, or viceversa, so that people can have them at once. In any case, anything you want to talk about regarding compatibility, cross features, or anything, I'm open to it. 

More concretely, for the next update I'm thinking of adding things like "pretend family" play for incest fetishists, more buffs for pregnancy, and look into what Etlacuache said, but I'm still trying to figure it out. But yeah, I don't wanna commit myself to much right now because I wanted to take some pressure off by uploading the main things first. But I will try to post on this thread about what I'm working on when it starts shaping up into something concrete.

It would be cool if you made a version without reactions, then our mods will be fully compatible in the future. I think i do reaction in next update

 

[Angelus75]

Hi @HalfVampireDoughnut , I started to translate your mod in French , not finished yet , too much text  lol

 

But at this time , i've  found many Typo error in your STBL

 

0x8D0D73A0  --> {0.SimFirstName} with I not i
{0.SimFIrstName}'s post was well-received, and people enthusiastically joined in agreement and shared righteous disgust.

 

0xBE2B645E --> missing { before {0.SimFirstName}
It seems some people received 0.SimFirstName}'s piece with surprising openness and engaged with it seriously. {0.SimPronounSobjective} got some enthusiastic agreement.

 

0x9CCFE192  --> {0.SimFirstName} with n not N
Ask to always tell {0.SimFirstname} what {1.SimPronounSubjective} has been up to

 

0xD6A9165D --> missing } at  second {0.SimPronounSubjective}
{0.SimFirstName} is just being affectionate like a parent is, right? {0.SimFirstName} feels like such a fucking piece of shit, acting this way with {0.SimPronounPossessiveDependent} child. Why, why does {0.SimPronounSubjective} have to be this way, how could {0.SimPronounSubjective be this way? If {0.SimPronoundSubjective} ever was actually like that with them, {0.SimPronounSubjective}'d be evil, the worst parent in the world. It's unthinkable.

 

0xDE95543C1 --> again I not i in SimFirstName
While this play went along okay, it left {0.SimFIrstName} with this confusing mixture of titillation, and the shame inherent to such a thing, amplified by the illicit way they're doing it. Like trying to pretend they're not doing what they both know they are.

 

0xC4F7E465 --> missing again } at SimPronounSubjective
This feels so, so, so gross, but {0.SimFirstName} still finds {0.SimFirstName} still finds {0.SimPronounReflexive} wanting to push past it, to taste the sliver of warmth {0.SimPronounSubjective can sense at the other end of it. Or is {0.SimFirstName} just driving {0.SimPronounPossessiveDependent} crazy?

 

I translated 400 lines at this time... maybe i'll found other typo errors lol 

 

😉

 

[HalfVampireDoughnut]

44 minutes ago, Angelus75 said:

Hi @HalfVampireDoughnut , I started to translate your mod in French , not finished yet , too much text  lol

 

But at this time , i've  found many Typo error in your STBL

 

0x8D0D73A0  --> {0.SimFirstName} with I not i
{0.SimFIrstName}'s post was well-received, and people enthusiastically joined in agreement and shared righteous disgust.

 

0xBE2B645E --> missing { before {0.SimFirstName}
It seems some people received 0.SimFirstName}'s piece with surprising openness and engaged with it seriously. {0.SimPronounSobjective} got some enthusiastic agreement.

 

0x9CCFE192  --> {0.SimFirstName} with n not N
Ask to always tell {0.SimFirstname} what {1.SimPronounSubjective} has been up to

 

0xD6A9165D --> missing } at  second {0.SimPronounSubjective}
{0.SimFirstName} is just being affectionate like a parent is, right? {0.SimFirstName} feels like such a fucking piece of shit, acting this way with {0.SimPronounPossessiveDependent} child. Why, why does {0.SimPronounSubjective} have to be this way, how could {0.SimPronounSubjective be this way? If {0.SimPronoundSubjective} ever was actually like that with them, {0.SimPronounSubjective}'d be evil, the worst parent in the world. It's unthinkable.

 

0xDE95543C1 --> again I not i in SimFirstName
While this play went along okay, it left {0.SimFIrstName} with this confusing mixture of titillation, and the shame inherent to such a thing, amplified by the illicit way they're doing it. Like trying to pretend they're not doing what they both know they are.

 

0xC4F7E465 --> missing again } at SimPronounSubjective
This feels so, so, so gross, but {0.SimFirstName} still finds {0.SimFirstName} still finds {0.SimPronounReflexive} wanting to push past it, to taste the sliver of warmth {0.SimPronounSubjective can sense at the other end of it. Or is {0.SimFirstName} just driving {0.SimPronounPossessiveDependent} crazy?

 

I translated 400 lines at this time... maybe i'll found other typo errors lol 

 

😉

 

Oh my god, thank you so much! That's really helpful. And my condolen- I mean, thank you for going through the effort of translating all of that as well!

[FeenSims]

Wow, cool, I have to try out that mod. Forbidden Fruits doesn't really appeal to me. You ask questions, but no one responds.

 

I hope your mod will be different.

 

I agree with the suggestion that Sims can be attracted to each other but not yet interact romantically. Until they decide to enter into an incestuous relationship. Then they automatically get the trait.

 

I love playing with incest girls, but unfortunately there are no suitable mods to make it a little harder for them to enter into an incestuous relationship.

Something like that needs to be carefully considered, just like in real life. Since it's illegal, etc.

 

 

Something else just occurred to me that would be really, really great. There's a nice mod by Zero:

 

https://www.patreon.com/posts/romance-lock-new-108976622

 

If you're allowed to edit it, could you adapt it so that the romance lock is automatically activated for siblings? There are some nice kissing mods that I think you could still use. But romance wouldn't be possible until the Sims open it via a question.

 

Edited December 12, 2025 by FeenSims

[HalfVampireDoughnut]

10 hours ago, FeenSims said:

Wow, cool, I have to try out that mod. Forbidden Fruits doesn't really appeal to me. You ask questions, but no one responds.

 

I hope your mod will be different.

 

I agree with the suggestion that Sims can be attracted to each other but not yet interact romantically. Until they decide to enter into an incestuous relationship. Then they automatically get the trait.

 

I love playing with incest girls, but unfortunately there are no suitable mods to make it a little harder for them to enter into an incestuous relationship.

Something like that needs to be carefully considered, just like in real life. Since it's illegal, etc.

 

 

Something else just occurred to me that would be really, really great. There's a nice mod by Zero:

 

https://www.patreon.com/posts/romance-lock-new-108976622

 

If you're allowed to edit it, could you adapt it so that the romance lock is automatically activated for siblings? There are some nice kissing mods that I think you could still use. But romance wouldn't be possible until the Sims open it via a question.

 

I feel like incest being restricted without the trait already acts as its own "lock", so to say. Besides, I'd rather not edit other modders' stuff for this, don't know what their policy is, but even still I'd rather do it myself. I'm already trying to make something around the whole organically unlocking the incest trait thing, though. I don't want to go in too much detail yet, in case I can't get something to work lol, but I'll do so when it's further along.  

Edited December 12, 2025 by HalfVampireDoughnut

[archer3915]

It's nice to see vampires getting some attention, as you don't see much up-to-date stuff for the occult sims.

[CJDJ]

I gut-laughed when I read the "Dopplebanger".

[deekush69]

Seems to be working just fine, except I do not get the option to give the new traits in the pie menu

[HalfVampireDoughnut]

2 hours ago, deekush69 said:

Seems to be working just fine, except I do not get the option to give the new traits in the pie menu

To have that option: It has to be a self-interaction, by the sim you want to give it to, they have to have the incest attribute, and be teen and up. It's called "Give Incest-related" trait, and it's under the actions submenu of the incest pie menu. It works in my testing.

Edited December 13, 2025 by HalfVampireDoughnut

[Angelus75]

Hi @HalfVampireDoughnut , Again me lol

 

I finished soon the principal file , stay 127 lines XD

 

But i've found many other Typo error , sorry

 

0xA957E524 --> missing 0. at {SimFirstName}
Feels good to brush up on ways to get what you want! Of course, {0.SimFirstName} would still get it regardless, but this gets {SimFirstName} inspired on brand new ways to do so. Plus, {0.SimPronounSubjective} just happens to enjoy it for its own... harmoninous beauty. Something like that, surely.

 

0x86E9830C --> t at {1.SimFirstName}
Declare {1.SimFirsName} to be the love of your life that you can't live without

 

0xDE2969CD --> missing } at {0.SimFirstName}
{0.SimFirstName feels a little calmer now that {0.SimPronounSubjective}'s talked it out a bit and is more confident about {0.SimPronounPossessiveDependent} ability to handle this and the obstacles that might come in the way. 

 

0xE5D9E3C5 --> n not N at {0.SimFirstName}
Ugh, {0.SimFirstname} feels such second hand embarrassment! How can you earneastly look at your own family member in the eye and... no, just no! What a weirdo! It seriously makes {0.SimFirstName}'s skin crawl.

 

0xB1F7AE18 --> I not i at {0.SimFirtName} and , not . at second {0.SimFirstName}
It hurts. {0.SimFIrstName} feels dizzy. {0.SimPronounSubjective} doesn't want to think of how everyone knows anymore. The shame {0.SimPronounSubjective} feels runs so deep that every second is like treading through thick malessess of the most torturous knowledge about {0.SimPronounReflexive}. The things once unthinkable to {0.SimPronounObjective}, are know to everyone. It's all {0,SimFirstName} is now.

 

0xC201E339 --> I not i at second {0.SimFirstName}
It really is out there! {0.SimFirstName} still can't escape it. The world won't give {0.SImPronounObjective} a respite. Whether {0.SImFirstName} agrees {0.SimPronounSubjective} deserves it or not, this powerlessness fills {0.SimPronounObjective} with such rage...

 

0x982AE95B --> *might] ?  lol
{0.SimFirstName} *might] be totally screwed now that {0.SimPronounPossessiveDependent} parent saw {0.SimPronounObjective} literally screwing a family member... but what sucks the most right now is that {0.SimPronounPossessiveDependent} lay got interrupted. {0.SimPronounSubjective} will deal with the rest later.

 

😉

 

[HalfVampireDoughnut]

10 hours ago, Angelus75 said:

Hi @HalfVampireDoughnut , Again me lol

 

I finished soon the principal file , stay 127 lines XD

 

But i've found many other Typo error , sorry

 

0xA957E524 --> missing 0. at {SimFirstName}
Feels good to brush up on ways to get what you want! Of course, {0.SimFirstName} would still get it regardless, but this gets {SimFirstName} inspired on brand new ways to do so. Plus, {0.SimPronounSubjective} just happens to enjoy it for its own... harmoninous beauty. Something like that, surely.

 

0x86E9830C --> t at {1.SimFirstName}
Declare {1.SimFirsName} to be the love of your life that you can't live without

 

0xDE2969CD --> missing } at {0.SimFirstName}
{0.SimFirstName feels a little calmer now that {0.SimPronounSubjective}'s talked it out a bit and is more confident about {0.SimPronounPossessiveDependent} ability to handle this and the obstacles that might come in the way. 

 

0xE5D9E3C5 --> n not N at {0.SimFirstName}
Ugh, {0.SimFirstname} feels such second hand embarrassment! How can you earneastly look at your own family member in the eye and... no, just no! What a weirdo! It seriously makes {0.SimFirstName}'s skin crawl.

 

0xB1F7AE18 --> I not i at {0.SimFirtName} and , not . at second {0.SimFirstName}
It hurts. {0.SimFIrstName} feels dizzy. {0.SimPronounSubjective} doesn't want to think of how everyone knows anymore. The shame {0.SimPronounSubjective} feels runs so deep that every second is like treading through thick malessess of the most torturous knowledge about {0.SimPronounReflexive}. The things once unthinkable to {0.SimPronounObjective}, are know to everyone. It's all {0,SimFirstName} is now.

 

0xC201E339 --> I not i at second {0.SimFirstName}
It really is out there! {0.SimFirstName} still can't escape it. The world won't give {0.SImPronounObjective} a respite. Whether {0.SImFirstName} agrees {0.SimPronounSubjective} deserves it or not, this powerlessness fills {0.SimPronounObjective} with such rage...

 

0x982AE95B --> *might] ?  lol
{0.SimFirstName} *might] be totally screwed now that {0.SimPronounPossessiveDependent} parent saw {0.SimPronounObjective} literally screwing a family member... but what sucks the most right now is that {0.SimPronounPossessiveDependent} lay got interrupted. {0.SimPronounSubjective} will deal with the rest later.

 

😉

 

Thank you once more!