Hrm. I don't recall that many games operating under that same umbrella, though. Sure there are some similar beats, but compare five or so of this 'genre' compared to the standard 16,703.3 harem power fantasy types and it's still pretty slim pickings. Not to mention that not every game is equal when it comes to narrative style, art, or the eager ministrations of the developers.
And more than a few of those games ended prematurely, unfortunately. So I say, much like our resident corrupted protagonist lamenting the lack of group sex may (assuming their mouth wasn't full at the time): bring 'em all on.
That said, I'm all for shaking up the formula a bit. Heck, this one almost scratches that itch I keep looking for, but it lacks the player (and their best friend/rival/lover/family member) transforming into a futa themselves, and the characters aren't particularly intimate with one another. I could frankly care less about the ntr aspect, so long as everybody is fair game. Oh, and with both bits below. Way more fun for everyone, and a target rich enviornment besides.
Credit where credit is due though, at least in this game the various characters within do have some decently written variations with attitude and personality, such as the contrast between Cass or the manipulative therapist. It's nice to see they have different motivations and sub plots within the futa stomping grounds.
Although I don't understand the logic of hyper sexed futas that are supposedly always in need of release, are quick to pounce on the player or their gf when they lose control, but somehow never succumb to these urges when surrounded by sexy futa babes as far as the eye can see. That's like claiming someone in a candy store is content with vanilla or strawberry cookies alone, despite being surrounded by enticing goodies. That would require significant self control and willpower that, as written, most of the cast seem to be lacking.
Also, it's clear there are onahole toys being used, and the girlfriend has access to a strapon, but for some reason there isn't a single oversized floppy dildo to be found for relief or personal use? Odd.
It's also entirely possible I'm overthinking it, and should just, much like the plucky protag and girlfriend, enjoy the ride.