WickedWhims by TURBODRIVER is the most famous adult-oriented mod for the game. While its primary focus is on explicit animations and personality archetypes, it also handles relationship settings.
⚠️ Always ensure you are downloading from the official creator's site to avoid malware or unwanted scripts. The Sims 4 Incest Mod
In some "100 Baby Challenges" or extremely long legacies, the game can sometimes lose track of distant cousins. Mods are occasionally used to fix or bypass broken relationship flags. Technical Risks and Game Stability WickedWhims by TURBODRIVER is the most famous adult-oriented
Some players use the game as a sandbox for writing complex, often dark, dramas or "Game of Thrones" style legacies where royal bloodlines are kept pure. The Sims 4 Incest Mod