Still the King of real porn games.
Rather than drop you into a giant, unfinished world, where every path just says ''will add later'', with a gameplay loop consisting almost entirely of banal grind and repetitive scenes, this adopts a very linear approach.
Despite this, this has more meaningful choices and growth than pretty much any other similar game.
At its core its essentially just a simple game that tells a story, then presents choices to progress. You mostly only get to pick one of these choices, as time moves on when you pick one. Its easy to understand, fun to play.
What makes this so far above similar games is the sheer number of options presented, the writing and the sheer amount of sex it packs into it.
Most choices have no real effect beyond the scene they're used in, but some have permanent effects. A common one is to turn women into
A: A mommy
B: A daughter
C: A slave
When they appear later, their dialogue will reflect your choice. Scenes seem the same though.
The core of this system is the 'lights'. The MC can see magical lights of various colors and use them to try and do shit.
Red: strip women
Blue: wet women
Pink: Fucky fucky ain't he lucky
Etc
As you use powers, you get exp and get better at them. This incencitivizes replay a lot. You can't max every magic at once in one run without cheating and even with cheats you won't see anywhere near every scene and variation in one run.
Like in one run I could call an single chick to clean my room for me.
In another I could call like 5.
The fact every action you take constantly moves the game forward means you never have to or even can grind. Sometimes you can choose to research colors for exp, but even that moves time forward, and means you give up interacting with people.
The only real issue the game has is plot lines that don't really go anywhere because they're slow burners and the game simply isn't that far. Like you have this nerdy guy - Jake. You can turn him into a chick, invade his dreams and make him think you're his step-dad who molests him, then make him think he likes being a woman. But you can't make him permanently act like a girl, like you are his step-dad or be a girl. Because the game just isn't that far.
Or more recently it introduced 'eternal contracts'. You use them, then for some reason have to use them again, THEN you have women... on weekends only. But the game is nowhere near implementing the second weekend. And we can already just perma turn people into slaves on any day. Really don't get the point of these and likely won't until like 3 years time when second weekend is in.
The only mechanical issue I have is that sometimes the back arrow just vanishes. So then you have to load an old save if you want to see what your options do. The entire appeal of the game is seeing what does what so even if its to prevent scumming 'important' decisions, it makes no sense
Overall if you want a lot of sex and to experiment with corruption, being nice, turning men into chicks, sharing them, etc, you really can't do much better