My favorites are probably the classic Honiepop, a newer one called Hush Hush, and Tower and Sword of Succubus.

Honiepop: I feel like honestly, this one needs no explanation or introduction, really. The girls are drawn well with decent voice acting, and I like the mechanics of unlocking everything through match-three gameplay. The game also has a great sense of humor.

Hush Hush: a new favorite that is sure to be a hit with visual novel fans who like exploring lots of different routes! It sees you trying to date five main girls, getting as close to them as possible to save their lives (while also finding time for side bangs if you can). It has also has a great sense of humor about it’s premise that is refreshing. The voice acting can be a little cringo for me, but I do appreciate that they kept just about all the voice actors/actresses from their free game Crush Crush. This is also where the characters are from, originally, and I would actually recommend playing that one first to catch some references and understand the wacky side characters.

Tower and Sword of Succubus: I actually would recommend any game from this company if you’re looking for pixel-art NSFW games. They are all instant buys for me just because they are so we’ll done. Back to the game at hand. Like mentioned, the art is incredibly well done and smooth, and I never get tired of some of the animations. It is also a pretty decent little classic-zelda-like. There are points where it pisses me off because it’s an actual challenge (in a good way), haha. So if you’re looking for an NSFW game that also respects you as a Gamer TM, then this one could be for you.

Bonus: The deep space waifu series: fun, casual shooting/Galactica style gameplay that sees you stripping anime girls of their clothes. This creator has made SEVERAL versions of this game in just about every genre of anime girl you could want, and they’re all a fun, casual time.