They say the scenes, which they often don't know about in advance, leave them "shaken" and "upset."
Performers working in the games industry have spoken of their distress at being asked to work on explicit content without notice, including a scene featuring a sexual assault.
Sex scenes are common in modern games - and are often made by filming human actors who are then digitised into game characters.
But performers have told the BBC a culture of secrecy around projects - where scripts are often not shared until the last moment - means they frequently do not know in advance that scenes may involve intimate acts.
They describe feeling "shaken" and "upset" after acting them out.
What game does sex scenes? Usually it just fades to black
Witcher III is the only one I can think of off the top of my head. I vaguely recall Fable 1 doing the fade-to-black thing, but then staying black and playing out some cliche moaning, which is kind of the same thing from the voice actors's perspective.
Whole category of dating sims and basically soft-core-porn games, which I'm sure have a high demand for acting out these kinda of scenes.