I think petal among thorns. Which was a pretty good game, though I don’t know if it was worth it. I might also say deviant anomalies because that was the first game I subscribed on patreon to
Bought Imouto Paradise and Ultimate Boon Wars like 20 years ago. I seem to remember them being decent, but it'd take something pretty special to get me to purchase it nowadays...
Technically wasn't made to be an adult game, but the first one I paid for specifically for that reason was Skyrim PC. I already owned the game, but I bought it a second time for the massive modding scene.
Definitely worth buying again.
Summer Memories and no regrets. Usually my approach is to play "free" version and test it out. After spending some time and game feels interesting enough ending up buying it.
I paid for the summer time saga's patreon for a while, really cool and well drawn game, sad it will never be finished... Now I only buy completed games
I guess subscribing to Love joint counts as well. I loved their games, at least until Palmer passed away. Since then it just didn't seem the same again.