I was going to upvote this post but seeing FF being praised while calling Parasite in City "meh" awoke something inside me...so here's my seal of disapproval for Future Fragments due to how the project was/is developed. It is basically a Duke Nukem Forever of Hentai games. The emphasis on super expensive voice acting for some pointless crap makes me question the priorities of the dev team.
You can have a decent game that is almost mute except for the sexy sounds, some ambient and music in the background (again,
Alien Quest Eve from Grimhelm is a golden standard for platformer H-games and somewhat similar to Thornsin...though it's just on a surface, since AQE is much more dynamic gameplay wise).
From the titles that were not mentioned here, I could recommend
Noaika from Kyrieru. It is a rather short pixel demo with just 4 kinds of enemies but hscenes are really good and sound design + graphics are interesting for an abandoned project. Also, check
Captivity from Perveloper. Good shite, with decent mods on discord.
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BTW, guess whose post is going to disappear within a day due to
calling the one who cannot be named?