Amorous Birthright is a text-based erotic adventure. The game is set in a large city called Cornum, inside the city you will encounter; nobles, magic, non-human races and plenty of sexual encounters. You take control of a young women, whose name and appearance you create, who used to live inside Cornum before one tragic night.

Guided by a mysterious and sultry being, who seems to dwell within your mind, you will attempt to re-enter Cornum and find your father or at least figure out what happened that night. Throughout the game you will be thrust into sexual situations which will slowly mould you into a more lustful women. Amorous Birthright is more about your character coming to enjoy and eventually use sex as a tool, than it is about slowly becoming controlled by your desires. 

With a mix of random events, while working jobs or wandering around specific areas and scenes gained from interacting with set characters, you will slowly raise your Lust stat. As your Lust increases you will unlock more scenes and variations of previous scenes. You may also change outfits which will also grant access to some specific scenes and variations.