Most of mine would be visual novels, especially if they also have gameplay elements to them whether it's an RPG, dating sim, or whatever. A lot of them have high quality artwork and voice acting and a strong empasis on story that tends to build up into the sex scenes (though not always as much as I'd like). Not exactly this site's speciality (mostly focuses on indie-ish work), but hey I'm also a big fan of indie stuff like Monster Girl Quest, Night of Revenge, Shrift, Tsukinomizu Project's games, etc too, and am pretty big into ero-modded games (like Skyrim).
It needs to have either a pretty decent or better story (I consider gameplay-based premises part of that even if the gameplay itself isn't all that great) or a pretty decent or better gameplay to keep my interest, otherwise if the porn is the only good thing about the game then it really shouldn't be a game in the first place, and those are exactly the kind of games people just tend to get saves for or gallery rips for.
My problem with Subverse is, as I mentioned, the laughable story and characterization coupled with lackluster gameplay that doesn't really have much to do with the pron. The story doesn't seem to be getting any better but at least they're trying with the gameplay.
Too bad the MC gives me the cringe so bad my boner often kills itself.
