Consensual incest mod?

[cavykid]

I'm thinking of trying to make a tuning mod that will enable full-fledged (and consensual) romance between family members T-E, something where they can kiss and cuddle but they receive reactions from anyone nearby and possibly lose reputation points. 

 

Is this beyond the scope of a mere tuning mod? Does something like this already exist? In before "you're a degenerate," I'm doing it for The Plot 🤪

[snowdog04]

You already have Wicked whims, right?  If you're posting on this site, everybody kind of assumes you're using it.  If so, all you need is 

And then, both parties have to have the Incest trait.

Edited September 16, 2025 by snowdog04

[AManNamedNorville]

As mentioned by Snowdog, Inappropriate unlock is what you'd be looking for. However as far as I'm aware, there's no negative reactions towards anything and other sims will not acknowledge it as anything different compared to normal relationships

[cavykid]

2 hours ago, AManNamedNorville said:

As mentioned by Snowdog, Inappropriate unlock is what you'd be looking for. However as far as I'm aware, there's no negative reactions towards anything and other sims will not acknowledge it as anything different compared to normal relationships

I have WW, but I want the actors to be able to create dates, kiss, hug, watch the stars together--things that WW doesn't really cover.

[AManNamedNorville]

On 9/16/2025 at 6:06 PM, cavykid said:

I have WW, but I want the actors to be able to create dates, kiss, hug, watch the stars together--things that WW doesn't really cover.

 

Ah okay. well you hadn't mentioned that previously.

I'm pretty sure* siblings can already do stuff like Hug and Star gaze together in the base game as friendly interactions. normal adults can kiss in the base game. With WW there's more interactions like "passionate groping/hugging" and the unlocker should well... unlock these interactions for sibling along with base game interactions that normal unrelated sims could do in the romance interactions. You might even be able to use the "go on date" interaction as well.

Edited November 5, 2025 by AManNamedNorville

[snowdog04]

Yes, they will do all those things.  Kiss, date, become partners, get married, all of it.   I have twin sisters who are a couple now.  It seems like you have to manually make them start flirting to begin with, but as soon as there's a Romance bar they get the idea.

Other sims definitely react if they walk in on sex, but I'm not sure if they notice other romantic interactions.

[cavykid]

13 hours ago, snowdog04 said:

Yes, they will do all those things.  Kiss, date, become partners, get married, all of it.   I have twin sisters who are a couple now.  It seems like you have to manually make them start flirting to begin with, but as soon as there's a Romance bar they get the idea.

Other sims definitely react if they walk in on sex, but I'm not sure if they notice other romantic interactions.

At what point did the romance bar appear? Did you have to use a cheat? (Also, yay twins! My two Sims in question are twin brothers 😁)

[snowdog04]

No, just have to click and make them flirt with each other a couple of times.  They don't seem to try to flirt on their own, until you do that.  As soon as they've been given that nudge, it's game on after that.

[Faolon]

On 9/17/2025 at 12:10 PM, cavykid said:

At what point did the romance bar appear? Did you have to use a cheat? (Also, yay twins! My two Sims in question are twin brothers 😁)

 

 

Download the unlock.

Add the incest trait to the two sims you want doing that stuff.

Adjust their attractions so that they're attracted to each other. You can do it so it selects a sim and auto adjusts the attraction to match that sim's appearance.

Make one sim start flirting. Or you can cheat the romance bar if you want.

[cavykid]

On 9/18/2025 at 2:56 PM, Faolon said:

 

 

Download the unlock.

Add the incest trait to the two sims you want doing that stuff.

Adjust their attractions so that they're attracted to each other. You can do it so it selects a sim and auto adjusts the attraction to match that sim's appearance.

Make one sim start flirting. Or you can cheat the romance bar if you want.

Okay, maybe there's a step missing, because all of that other stuff is happening--they're attracted to each other, the unlock has been downloaded, they both have the incest traits, and they can fuck. The thing that they cannot do, for whatever reason, is have flirtatious interactions. That is the part that I'm trying to accomplish.

[Faolon]

41 minutes ago, cavykid said:

Okay, maybe there's a step missing, because all of that other stuff is happening--they're attracted to each other, the unlock has been downloaded, they both have the incest traits, and they can fuck. The thing that they cannot do, for whatever reason, is have flirtatious interactions. That is the part that I'm trying to accomplish.

 

If you're talking about the options simply not existing, then it's an issue I've had before. Like when one sim clicks on another and the romance options simply don't appear. This is usually caused by another mod.

 

(Also, if one of your sims is a teenager, make sure that adult-teen relationships are turned on in wicked whims settings.)

 

If there are any other mods that influence relationships or family, it's probably the cause. First check their settings and see if there's an option to allow.

[snowdog04]

Do you have any mods by Lumpinou?  Her stuff is known to interfere with the Inappropriate Unlock-- on purpose.  

[cavykid]

19 hours ago, snowdog04 said:

Do you have any mods by Lumpinou?  Her stuff is known to interfere with the Inappropriate Unlock-- on purpose.  

For real? That's fucked up. I'll have to get rid of her shit... Now all I need to do is write a mod that allows people to react to incestuous actions.

[ExoticFamilyFun]

In my honest opinion, what is lacking when it comes to WW and inappropriate mod is to make incest flow more... naturally? Normally when you add the incest trait, that's it, you add the trait and there is nothing more to it which is counterintuitive. It lacks depth and is just text with nothing behind it. 

 

The reason why incest is so alluring is the fact it is such a taboo matter, it makes us question, ponder and revolt at the idea but when a relative is hot enough that tends to melt away but that notion still remains. Both parties feel this and there is a certain disgust that even after experiencing which still remains. This isn't to mention how much of a big secret this is to keep from rest of the family or friends as it can lead to unforeseen consequences if it is revealed. This also takes us to the dilemma that is your relative and you being on the end of the stick. Both being blood related and most likely having experienced a childhood together or in case of parents, having raised you it makes for a troubling dynamic. 

That's why incest is so alluring, you get to bang your hot cousin/sister/mom but there is a whole slew of troubles ahead that would make for a wonderful story. 

 

Topics regarding Incest is my forte, most of my sims playthrough involve some sort of incest and not just shallow create sim and make them related. I get two unrelated sims to fuck and have babies and then experience life naturally until maturity which then descends into road of incest (My fave being mom-son). But I never push myself to go into multi-generational as it doesn't feel right and I am not playing the habsburgs. 

 

If I were to give my two cents on a hypothetical mod that is focused on incest, this is what I'd advise to add:

 

Spoiler

When a sim enters teen cycle, because of their hormonal nature they tend to get hard all the time, so a question pops up to the player which asks that the sim has taken a fancy to a particular close relative of theirs so they feel attracted to them. It then depends on the player if the sim will gain incestous trait or not but this won't mean the other party will have the trait as well. 

 

Going into flirt mode instantly will result into your sim getting berated and yelled at and probably lose the incestous trait. Being playful and friendly might be safer and going up there until you start to make some subtle moves like kissing the hands and light physical intimacy which can make the other party also gain the incestous trait as well. 

 

Generally put, every situation that ties to sex or flirtatious nature needs to have some sort of unique flavor that establishes the couple as blood related in some capacity. Like brother&sister sims after sex, a moodlet will appear which depending how close the sims are can be flirty, happy or embarrassed. Have it be discreet as no one can know that it is happening as if it is found out, the relationship will be turned to dust and the incestous trait will be lost. 

 

That was the part that I am certain that is possible to be added into the game but I am interested is can the genealogy be modded to reflect incest? Because this is the reason why when mothers give birth to their sons offspring, they can't be breastfeed or be considered the mother. 

 

Still, I really wish there was more to incest in Sims 4. I tend to curse myself for not knowing how to mod. 

[Faolon]

On 9/20/2025 at 4:58 PM, cavykid said:

For real? That's fucked up. I'll have to get rid of her shit... Now all I need to do is write a mod that allows people to react to incestuous actions.

 

 

Lumpinou added some options in RPO to allow this kind of thing.

[snowdog04]

11 minutes ago, Faolon said:

Lumpinou added some options in RPO to allow this kind of thing.

Wait wait wait.  Her mods block the functionality of the Inappropriate Unlock, she'll autoban you from her Discord if you have it installed... but she has a mod that includes reactions to incest?

Or am I misunderstanding your reply?

[Faolon]

17 hours ago, snowdog04 said:

Wait wait wait.  Her mods block the functionality of the Inappropriate Unlock, she'll autoban you from her Discord if you have it installed... but she has a mod that includes reactions to incest?

Or am I misunderstanding your reply?

 

Not able to open game this moment, but I'm fairly sure that there's an option to stop RPO from blocking things in the mods in game settings.

[cavykid]

 

... it doesn't feel right and I am not playing the habsburgs.

 

 

That was the part that I am certain that is possible to be added into the game but I am interested is can the genealogy be modded to reflect incest? Because this is the reason why when mothers give birth to their sons offspring, they can't be breastfeed or be considered the mother. 

Honestly, that part about the Habsburgs got me laughing.

 

As for whether an incestuous relationship can be reflected in the genealogy: yes, though it's rarely talked about. In the family tree, one of my sims could be traced back to her mother and her mother's sister, visibly, without the aid of any mods.

 

I guess what I'm looking for is slightly different, though an incest-aversion attribute could be added to sims for the drama. What I want in a mod is for public PDA/sex to detract from the outsider sims' reputation and relationships, even (or especially?) if other family members witness it. It's just not the mood I'm looking for when my twin brothers can make out sloppily in front of their mother with no reaction from her. Honestly, she should be going full Agnes Mode on them!

 

If I could get a better grasp of Python and how to use Constructor5 or Sims 4 Studio, I'd be on it in a heartbeat. For now, I guess I could write some documentation, and that would give me at least some clues as to where to start. 

[ExoticFamilyFun]

13 hours ago, cavykid said:

As for whether an incestuous relationship can be reflected in the genealogy: yes, though it's rarely talked about. In the family tree, one of my sims could be traced back to her mother and her mother's sister, visibly, without the aid of any mods.

Interesting but this is doable within the second generation without mods but I originally meant within the first generation, as in siblings or parent and offspring sort. 

 

I remember that this didn't really work and without the incest attribute by inappropriate unlock for WW it was impossible to even make it feasible for the child to be considered a direct offspring of both parents. It simply had the child be either the offspring of one parent and not the other. 

 

But then I tested it with a son-mother pair and I came to my shock that It successfully depicted straight up incest as I thought it would. 

 

 

This came as a shock for me because it really didn't work like this previously, it would either only depict one as the parent and the other as a grandparent. I've seen it work with siblings with MCCC but this is the first time I've seen it work naturally. It flabbergasted me as well when the mother could actually breastfeed the child, it utterly confused me because I vividly remember this not being the case. 

 

13 hours ago, cavykid said:

I guess what I'm looking for is slightly different, though an incest-aversion attribute could be added to sims for the drama. What I want in a mod is for public PDA/sex to detract from the outsider sims' reputation and relationships, even (or especially?) if other family members witness it. It's just not the mood I'm looking for when my twin brothers can make out sloppily in front of their mother with no reaction from her. Honestly, she should be going full Agnes Mode on them!

 

Same here actually. I've scoured far and wide with no avail, what I've seen is simply attributes and moodlets that act as boosts between the related couples but nothing that adds drama or a downside to it. It isn't like as if it is impossible task to do, I have seen a lot of mods that make relationship drama and reputation downsides. 

 

14 hours ago, cavykid said:

If I could get a better grasp of Python and how to use Constructor5 or Sims 4 Studio, I'd be on it in a heartbeat. For now, I guess I could write some documentation, and that would give me at least some clues as to where to start. 

 

While I am not exactly proficient in making mods, I've edit a few (Like Raven Family mod, because bonus 15+ for everything by literally existing is stupid) and I've seen a lot of mods that go extremely indepth about relationships and moodlets so I know how the basic coding works and goes. Theoretically, it is possible to give the incest attribute a moodlet or reaction factor as vanilla sex from WW already creates a reaction to outside sims by either making them flirty or angry and attributes like cuckold or cuckqueen can change reactions from spectating sims with that attribute. I'd genuinely would love to try to give it a shot at it but I don't have the skill or comprehensive knowledge to make it possible but I am aware enough that it is 100% possible by someone at least decently competent at coding because the blueprint is right there, it just needs some recoloring. 

 

Incest now really just enables us to make related sims fuck without the game blocking them. What incest should do is grant unique moodlets, reactions from spectating sims, unique messages and interactions and some spice in the gameplay. 

 

[cavykid]

I'm in the middle of moving to a new place right now, but I'll get started on the docs as soon as I settle in. This project can't not be created now...

 

Does anyone know how I can crack open a package file and examine its contents, incidentally?

Edited October 2, 2025 by cavykid
ETA: a question

[ExoticFamilyFun]

If you're in, I'm in as well. 

 

2 hours ago, cavykid said:

Does anyone know how I can crack open a package file and examine its contents, incidentally?

 

If you have Sims 4 Studio, click on "My Projects" and select any file you want. That's it. 

 

I would highly recommend watching Serra's guide to sims 4 modding because that's how I'm learning how to edit and find some mods. It can be complicated if you don't put the information to use tho. 

 

Here's a link to a playlist

 

[wild_guy]

On 9/30/2025 at 6:13 PM, ExoticFamilyFun said:

What incest should do is grant unique moodlets, reactions from spectating sims, unique messages and interactions and some spice in the gameplay. 

Right on target! This is what I miss so much in the game. Sadly WW doesn't cover it and has no any plans to do so. 😢

I don't think it's an easy task, especially for beginners in modding.

[Z0mBieP00Nani]

On 9/28/2025 at 5:52 PM, Faolon said:

 

Not able to open game this moment, but I'm fairly sure that there's an option to stop RPO from blocking things in the mods in game settings.

This^

 

There is an option in the settings menu that will allow you to turn off inappropriate actions with family members. I know this because I recently reinstalled RPO and the settings menu popped up, and for once I decided to actually read the menu options, and saw it in there. But yeah, if you don't have that option selected, then RPO will prevent intimate relationships between family members or relatives.

[morpheusk13]

Update on the mod?

 

[Rikerbabe]

Been following this and am interested in how you are coming along on your mod. I also wish that I were able to mod myself. I have many running in my mind that would make the game more "real".