20.04.2026 Minor Update: Fixed a couple of strings in the Russian translation. Added the French translation link (Thanks, Hope!). The mod is now version 1.0.3

18.04.2026 UPDATE: Fixes for the Adoption and the Unknown parents game bugs and the new cheat 'Remove Adoption Relationship'! Read the details in the post.

I tested this update on some very complicated family trees, and it worked perfectly, even without using the MCCC relationship cheats. I'm so relieved!

The Problems

The 1.121 patch modified the entire genealogy system. Unfortunately, we now have very little freedom to define relationships between Sims. However, it is still possible to set someone to be a parent of another Sim. I do that myself with MCCC relationship cheats. Otherwise, it would be impossible for me to move to the new save.

However, there are situations when MCCC (or the game itself) prohibits adding a parent-child relationship. The most common case is when you assign one parent from a married couple but can't assign the second parent because the Sims are stacked with the "stepson/stepdaughter" status.

Sometimes, the Adoption status appears even when no adoption has occurred.

Additionally, you may see strange "Unknown" parents where they shouldn't appear.

Furthermore, you may encounter a bug that prevents you from assigning parents to parentless siblings.

The biggest problem is that we can no longer delete parent-child relationships. That's why I wrote this mod.

Set Parent Cheat

With testingcheats enabled, shift-click on any Sim of the active household for whom you want to set a parent. This option is only available if a Sim has one parent or no parents. It counts only the valid parents, so you still can apply the cheat, if the Sim has some weird 'Unknown' parents.

Then, just choose a Sim and confirm the action.

Once it's applied, don't enter CAS, don't travel and don't switch households, instead save the game (I advise you to do that with the 'Save as' function to easily revert changes) and select the newest save slot! Otherwise, the game may restore the old relations.

You can save and re-enter that after using the cheat on all the Sims in your active household. It's not mandatory to re-enter the game after updating each Sim.

The result is persistent and the relationship is updated everywhere. And yes, even if you reenter the game. Additionally, starting with version 1.0.2, the cheat automatically clears the stacked adoption status.

Remove Adoption Relationship Cheat

I added the cheat to manually clear the adoption status for Sims whose parent relationship wasn't set or was set before this update.

If a child or parent has the "Adoption" status (even one-sided), you can press Shift and click on the child. Then, select the "Remove Adoption Relationship" cheat in the "Parents" category. This will make them regular parents and children with no adoption status.

After that, save the game (I recommend using "Save As" too) and re-enter the save. You can save and re-enter that after using the cheat on all the Sims in your active household. It's not mandatory to re-enter the game after updating each Sim.

Warning!

Note that the adoption cheat cannot be applied to invalid Sims. For example, if the adoption status is applied to siblings or other relatives, or if they have the adoption status but not the parent status. This means they are severely broken, and you must fix their main relationships first using the "Set Parent" cheat.

One more thing to keep in mind, regardless of whether you use this mod: don't create situations where the Sim has one biological parent and one adopted parent if the adopted parent has a partner who is not the biological parent. The family tree will sync, and the biological parent can be replaced by the partner of the adopted parent.

Due to the issue above, even if another parent adopted the child, they would become the regular parent. The same goes for the 'Set Parent' cheat. This must be done to resolve all underlying issues. I suppose it's more important.

Check the compatibility status HERE

REQUIRED

Lot51 Core Library

CONFLICTS

None

TRANSLATION

Russian by me

French translation link by Hope

INSTALLATION

Remove the old version and unzip the archive in the Mods no deeper than one subfolder! The mod now has the 1.0.3 version.

F.A.Q.

No cheat on the sim?

You didn't install Lot51 Core Library correctly

You didn't enabled testingcheats

You didn't Shift + click on the sim

This sim already has two parents

There are no available Sims for the parent role. For Sims from baby to teen, the parent should be at least a young adult. For young adults and adults, the parent should be an adult or elder. The teen can be a parent for Sims from baby to child, if you play with teen pregnancy enabled. For elders, the parent must be an elder. The Sims do must not be blood-related; the selected parent cannot be the target's stepchild (but a stepparent is fine). They can also be in-laws, but the game may prohibit the romantic relationship between this Sim and their partner (unless you have mods that enable it).

You assigned a wrong parent?

This cannot be reverted, but you can quit the game without saving and reenter, or just use the previous save slot

Have the relations only been updated on the parent and their child, but not on the descendants?

Make sure you have the 1.0.3 version

Save the game to a new slot and re-enter it (don't go into CAS or switch households before doing so). Only then will the game rebuild the family graph

The game restored the old relations?

Make sure you have the 1.0.3 version

You probably didn't save the game to a new slot or reenter the game. Use the cheat again and select the "Save as" option. Then, go to the main menu and enter the new slot

You have the Adoption status somewhere?

Use the 'Remove Adoption Relationship' cheat, read the details in the section of this cheat

If you encounter something that I didn't explain here, give me the details, especially what the log file in the mod folder says!

DOWNLOAD

HERE (18.04 in Public)

P.S. I can only help if you provide me with the details of any issues you are experiencing. Read THIS before writing a bug report (via the link below, not in the comments section).

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