This is a very personal review, and my score is a 5/5. It does not matter if the game is not complete yet; barring a disastrous finale, I don't think my opinion of it will change. Here's why. Objectively speaking, Pale Carnations has some flaws: it sometimes gives in to tropes, or to the dreaded "porn logic". However, the game's positives completely overwhelm the negatives - and then some. Also, rather than being completely realistic, the game aims for verisimilitude to its great benefit, because this allows it to speak about human character and emotions despite its concessions to "game-isms".
First of all, this game is about the weight of past choices, their impacts on those around us, and compromises, both willing and unwilling. It's a game where absolutes gets thrown to the wind, and everything is bathed in shades of different colors.
Maybe fate dealt you a bad hand, and you're stuck shouldering a weight you never asked for and don't deserve - still, you have to keep going, because people depend on you, and it would be selfish to relinquish. Or maybe you've made a mistake, and you feel obligated by it.
Maybe you're compromising with your conscience, or you're stuck with unpleasant people, doing unpleasant things; and yet you can't quit, because you fear the unknown, you've got too much to lose, or you don't want to betray yourself and what you believe.
Maybe you convinced yourself you can't change things - and this is probably true, but still something keeps telling you you're picking the easy way out, and it would take so little to have an impact around you.
If so, and if you're able to immerse in a story with a modicum of empathy, Pale Carnation will resonate and captivate you like no other. Its nuanced characters (both protagonists and antagonists) and its themes will make you think, maybe even challenge your views - if it isn't the best praise for a game, and a porn game at that, I don't know what is.
Now, the game's themes are not to everyone's taste: BDSM, humiliation and coercion are part of the package. And yet, the game managed to captivate me, even if I'm as vanilla as they get, because those themes are not there just for shock value.
In an ocean of bland landlady / tenant stories, Pale Carnations is memorably unique, and manages to balance hope and despair, making its underlying humanity shine through layers of filth. If any of the above tickles your fancy, I strongly suggest to at least give it a try.
One last note: I didn't talk about the technical or graphical side, because to me the story trumps everything else. But I'd like to say that GIL managed to push the Honey Select engine to its limits, and his pictures and animations are notably expressive, and perfectly able to complement, punctuate and prop up the story. And, like the story, they can be both incredibly sexy and repugnant where needed.
"These are your lies and your frailties. [...] You [...] have a devastated life, like all of us. So instead of lecturing us, of looking at us with disdain... you should look at us with affection. We are all on the verge of despair, we have no other remedy but to look at each other's faces, keep each other company, tease each other a little... Or do we?" - Jep Gambardella, "The Great Beauty"