NekoNTR is compelling because it is largely about the needs, desires, and feelings of the woman in the relationship, which is contrary to basically all other NTR games who somehow make it about the sexual gratification of the cuck and his feelings, through his emasculation, voyeurism, insecurities, fear of black people, sexual inadequeacy, etc. Little to no NTR/NTS games have heroines with real interiorities, and are simply a canvas for the reader's anxieties for them to get off to. It's really telling that they call it "sharing" as if women were property. I think a lot of the NTS complaints come largely because the audience of cuckold themed powerpoint presentations is men who want to be the center of focus and attention, and cannot deal with the lack of control over women that is otherwise standard in these games.
I really wish there was a term or genre for non-monogamous themed stuff that isn't entirely focused on the men involved, because in 9/10 doujinshi, art, games, stories, captions, etc, it is about how it feels to watch your girlfriend touch other people, or how other people feel touching her, and not how she feels touching other people. It might genuinely be the only cheating porn on earth that passes the bechdel test. It's auteur kino. It's art. It's among the only things that manages the insane repression I feel trying not to cheat on people despite everything in my body telling me that it's what I want to do, no matter how irrational, destructive, and cruel it is; and no matter how loved, respected, and supported I am. Never submit to the horde of self centered men! Unless, of course, you have a boyfriend