I could barely find any adult games with actual gameplay
Hah. I would click follow for that, but that would make me unfollow ;-)
There are some. You need browse among the right tags to find them among all those kinetic vn. But depends on the game play one is looking for. Make sure you adjust the tags accordingly when your game play and story crystalizes, so people can find you. And do not rely on promotion by existing on itch alone. I found you by accident and not by looking for your tags.
And yeah it occured to me after posting, that you do have 3d models in 3d enginex , you could do lewd sandbox exploring and story telling.