I really wish this site let me give half stars, because I'd rather give this a 3.5, but I won't over-sell it with a 4.
Right, lets start by talking about a bias I'll have and will be impacting this review. I went into this expecting this to follow the relatively similar trends and guidelines as other harem builders; you go around slutting it up, tagging and bagging everyone you see with no significant, or at least permanent consequences. And boy howdy was that a terrible idea; I ended up locked out of some content fairly quickly and just keeping some girls around became a struggle. This is doubly true for fellow pregnancy tag stalkers, as impregnating them too early increases the chances of a lockout occurring.
As a result of the above, I found myself hindered by game mechanics fairly regularly, avoiding certain locations at various times of day as to not trigger the damning event until such a time I could resolve it. Speaking further on the mechanics, the in-game hint system for developing your relationship with the girls can at times be vague the point of obtuse; actively making it harder to progress with them by saying things like "take X on a date", despite them actually needing Y lvl of stat and specifically taken to Z location. There is also rarely a warning about the repercussions of specific events that take place; sometimes it seems like you nailed it and did it flawlessly, only to find out half an hour later you didn't have something you needed to unlock a certain trait from that scene, and now you can't take a specific path later.
One could argue (and may in fact be the developer's intention) that this gives a more real and genuine experience. To pull this off in real life, you would have to try and avoid certain meet-ups, not know what you need to advance your relationship, to not know what you're missing out on by not going down certain paths with your lover. My response to that is thus: this is a game for horny people. My blood isn't going to my brain right now, and I'd prefer not to overthink things. Generally speaking, following the K.I.S.S. rule is paramount in this type of game because obstructing the flow the player gets into with tedious or unclear objectives can utterly ruin the experience. The redeeming factor here is that there is a fairly well developed wiki which can help people avoid pitfalls provided they're willing to accept some spoilers, which personally I think is a MUCH better alternative to having to start a file over given how long things can take to develop (even with the in-game cheats, you can't save a truly screwed up run).
A major personal peeve from me while on the note of development; the pregnancies are unfortunately, poorly done. The mechanic itself is fine, and the few scenes where it's relevant are usually quite nice, but the visual changes on the characters make it clearthis was an after-thought. Many of them are just a copy pasted and slightly re-shaped layer. It's ok at best on some, but at worst it's plain as day and outright jarring. The greatest offender I found so far was Hanna, whose belly didn't even match her skin tone. The only way I can even tolerate her presence now is by going with the head-canon that she's wearing a stocking-like body-glove over everything except her stomach (I know it doesn't make sense with her head and hair, but it's all I got).
The positive section will be shorter, but no less significant. Despite all these negatives, the writing is still pretty good. They said they wanted a comedic tone for the game and for the most part it's there (though often in the form of over-exaggerated stereotypes). While I of course developed favorites, I didn't encounter anyone I genuinely disliked, or at least if I did that I couldn't change into a more pleasing version. Also the idea that you don't have one massive harem, but several smaller ones is something I kind of like. It prevents what would be obvious clash-of-characters from the many different personalities, and helps keep things from becoming too samey. Though again, I STRONGLY RECOMMEND YOU KEEP THE WIKI HANDY, unless you're the type who gets satisfaction from running through story driven content multiple times. I consider porn games like I would any story heavy game; I want to see as much as I possibly can in as few playthroughs as possible. This is because I don't like seeing the same story too much as it can wear on the experience, but this is a personal preference.
All in all, I recommend this, just know ahead of time that the developer intentionally put traps in the game, and it can be quite the time-sink.
