futa / trans

Futa porn games (sometimes called futanari or futa / trans) are adult games that allow playing with some odd trans, hermaphrodite girls, shemale characters with big cocks, and others.

Anime, manga, and other forms of adult-oriented media, futanari typically refers to fictional characters depicted as having both female and male sexual characteristics, such as breasts and male genitalia. These characters are primarily portrayed as female in appearance, but with the additional element of male anatomy.

Futanari in this sense is most prevalent in hentai sex games and has become a niche but popular trope within that sphere.
It is often associated with fantasy or erotic storytelling, without aiming for biological or realistic representations of intersex conditions.