None of the games mentioned seem better than Subverse (even in it's unfinished form). For me. And if Subverse porn content looks disconected from game to you - I don't understand how Skyrim with porn added is enjoyable to you as porn content is completely unrelated to story. Visual novels are not even actual game (unless it does have some game mechanics) - just a digital porn novels with pictures.
You're of course free to your opinion, but I personally would seriously question your taste if you hold Subverse to such hilariously high regard,
especially in its incomplete form. For what it's worth, you're also in the minority as Subverse has had very divisive reception even from fans of Studio FOW (like myself) and has a pretty distressing score on steam, while games like Monster Girl Quest alone have a massive and fanatical following with deep community support.
Firstly, I said good story OR gameplay. Secondly, it seems you actually never modded Skyrim with erotic content based on your opinion, as the best mods and many mods in general seemlessly blend sex with the rest of the game and quite a few popular ones have their own storylines and/or incorporate their content into the game's general worldbuilding. Others allow you to solicite others or be solicited based on various factors like arousal (which itself can be based on what you're wearing and doing), relationship points, and even sexual preferences. Same for rape, with some NPCs never raping due to morals and others only doing so when aroused enough. There are mods that can incorporate this into defeats as well, while others add fertility and love cults that reward you for having sex instead of treating it like a bad end or punishment and have related questlines.
They can very much be seamlessly incorporated into the gameplay and story, and Skyrim itself is already a fun and expansive game with a ton of customization options because of mods.
That's without going into the "for fun" mods like devious mods which can trap chests and doors to apply cursed bondage gear to your char. Even modded Skyrim makes Subverse look like a joke.
Visual novels are indeed games and there are a ton of them on this site. Subverse itself is basically a visual novel--are you even aware of that? Like,
are you being serious right now?
Look at this shiz lmao:
My friend, your're nuking your own credability. For what it's worth, MANY visual novels have game elements and more than a few aren't shallow wannabe ones like Subverse uses. Utawarerumono's grid combat, one of many examples, makes Subverse's grid combat look like a 4-year-old's first coding project, especially the newer games, and it is most definitely a visual novel. Almost pound for pound, Utawarerumono is presented almost the same as Subverse (but is a much better game all around) and it's VEEEEEERY obvious that's the kind of (extremely popular) ero game Studio FOW was looking to emulate for obvious reasons. You're deluding yourself if you think otherwise.
If you don't want to call visual novels games for whatever crazy reason despite the fact that a huge number of them have full on RPG or dating sim or whatever systems, as I already mentioned, then fine, but that means Subverse isn't a game either. That doesn't change my opinion that it still isn't very good either.