Games like Opala and Roundscape i'vce always seen as free for all fuck fests. I just don't get the whole cucking thing, I don't see it that way.
I agree, but I do understand where they are coming from, even if I don't fully agree. For a lot of people these games are not only a source of pleasure and enjoyment, but also an escape. For a multitude of reasons people want to immersive themselves in the main characters and enjoy something that they never could in real life, and for a lot of men that includes fucking every woman that comes his way and making them their own.
In a way once a female shows up in a lot of these games, a lot of players have already "claimed" them as there own, so when the women have sex with some else without their consent, for whatever reason, it can be considered ntr or cuckolding. It's all a matter of perspective, and how the person chooses to play a character.
Can you honestly see a character like Gabrielle being happy only having sex with 1 person?
At the very least it couldn't be a human, she did seem to get along pretty well with pre-transformation Kythie (Forget his name) though. I don't know if that would transfer well to a closed relationship, so maybe; but as for the main character I could never see it happening.