The gameplay is decent, properly delivering on the management aspect with a decent balance of sex/training/work.
My main issues with the game are:
1. even if your slaves "love" you, performing any sort of sexual training with them causes their "love" to drop.
2. Once you assign a mistress, you're stuck with her and you can only have one mistress for some reason.
3. the initial grind to be able to get to all of the content is very exhausting and long
4. the pregnancy aspect of the game is pretty much negligible since the only real way you will get a slave pregnant is by paying for it and then you don't even get to enjoy any of it as that slave is then taken by the government in exchange for money, but if she doesn't get pregnant, then she winds up becoming completely infertile.
5. the extremely limited space you have throughout the game puts you in a situation where you are pretty much unable to build up any kind of actual harem of slaves, and even if you could, it's somewhat pointless as you can only ever have one slave interact with you at a time unless your mistress happens to buy her own slave, but your mistress isn't technically a slave anymore, so...
*6. Significant Energy being required for tasks on top of a daily 24 hour time limit to do anything makes the gameplay feel incredibly limited in what you are able to do in any single day as half of your day will most likely be spent sleeping to recover your energy, and you better make sure that you're fucking regularly, because your character takes significant penalties after only a day or so of not having sex, and guess what?
Having sex requires a huge chunk of energy even though your character busts a nut in no time at all...even though he's having sex pretty much every day.
*more of a personal issue than a technical one since it does balance the game, but just doesn't feel logical to me personally.
All in all, the game is tremendously grindy with decent animations and balanced gameplay resembling an actual management game, but it falls short when it comes to delivering on the sexy fun times that should be hugely prevalent in a game about needing to repopulate the earth.