Trainer games.
The good ones hit a dark little power fantasy kink of being able to reshape a person's identity with your mastery of sex. Which is just hot as hell to me.
It's honestly a bummer that the genre seems to be dying out in favor of female protagonist corruption and cuckPoV NTR games. Neither of which do much of anything for me, but capture the "I want to see a woman get degraded" folks, who were the main audience for Trainer games in their heyday.