I'm genuinely impressed with the writing. Not in a "It's good porn writing" way, but in a "This shows an impressive level of historical and theological understanding way". In a porn game.
I know that might not sound like a major selling point, but so many of the ideas referenced in the game, like sin eating, have a genuine history to them which gives the game a level of seriousness that develops the tone of the game. This is the most plot I've scene in a game of this type. If I ever get caught with my trousers down looking at sexy Nuns, at least I'll be able to say it's for the articles.
It's not the game is overly serious. So far the central theme is that of an investigation into possibly supernatural events conducted by a Vatican investigator. Delightfully blasphemous and heretical, and a fair amount sexy. Still, I'd be lying if I said the quality of the writing hasn't stolen the show. I'm not sure if I'm more interested in the porn or the story and that's a good thing.
I guess I'm supposed to comment on the gameplay. As far as that goes, it's not about building stats as it is about balancing them. Events through the day will build lust/temptation which help unlock other events. This is not a grinding your stats up game, it's a light puzzle game where too much lust means you have to flagellate and reduce it, not enough lust and you can't build the temptation to sin. Not too difficult, not too easy, not simply clicking the same button over and over to get enough points to do the next thing.
While there isn't a whole lot there yet in terms of porn for my tastes, this is a stunning start.