I usually prefer 2D games, but this one had a lot of tags I was looking for and avoided the bimbo faces of other 3D games, so I gave it a shot, and I was not disappointed. The game plays more like an interactive novel in my opinion (the story is pretty linear but the order/timing you do things is player driven), going from one scene/interaction to the next, with some minor resource management and simplistic combat and a couple scavenging minigames. Overall it's uncomplicated, no real difficulty or grinding needed unless you're bad at managing your time, in which case it is very forgiving. It does not hold back on the sex scenes if that's what you're here for, and they definitely get arguably better as the game goes. In fact there are a few fetishes that I generally avoid (like pregnancy) that actually managed to be fairly sweet and endearing here. And that's the real beauty of the game, you get immersed into it and everything just sort of gels well and makes sense. So I'm saying, play this game for the Sci-Fi/Fantasy/Survival Horror loving harem romance it is, and enjoy the scenes and the comedy and progression as they come. The grammar/spelling can be questionable, but it's forgivable and not really jarring unless you're looking for problems. In my opinion, a must play if you like story driven ero games.
Side thought, I can actually understand why there is an incest mod for one of the later-game love interests introduced. I am not an incest fan, and arguably people like me are why it's not part of the main game, but I can put aside my own fetish-aversion and acknowledge that an incest sub plot would actually enhance the character interactions. It would increase the drama and further emphasize why the player and the love interest of note are struggling with their situation. Basically, I am further emphasizing that the game is immersive with an enjoyable plot, that withstands fetishes with its compelling storytelling.