This game is decent. There's some great stuff here, such as the renders. This game uses real porn actresses and scenes and the selection is very good. All of the girls are hot and there's a variety of scenes. I really enjoyed how the developer zoomed in on the girls in all of the scenes and hid the male actor's face most of the time. There are also two girls that have fmv scenes, which were awesome.
The gameplay is in the sandbox style, and the developer implemented it very well. You click on locations on the map to talk to girls and progress the story, as well as doing minigames to level up 3 stats or to earn money. You also have to go to a store and search for food, but this mechanic is very forgiving, especially halfway through the game. Overall, there is very little grinding required, which is always a plus. There's also a minigame skip button which is a great addition. Plus, the game is very clear about hitting the point of no return, which is another good design choice.
The worst part about this game, and which soured a lot of my experience, is the writing. The story had a very interesting and promising start, but pretty much got pushed to the side for large parts of the game. As the supposedly only male left in town, your character is supposedly hunted, but you never feel any kind of danger, because he goes out freely all the time, and even has sex in public places many times, but he only gets caught a few times. There is also very little choice in this game, as you pretty much only get two types of options most of the time: 1. to the fuck the girl or not; and 2: what sex position to change to. There are two instances where you see a girl get raped but you can't do anything about it for some reason. I maxed out my strength so why I can't I kill the assailant? Nobody would care. There is also very little worldbuilding here and a strange disconnect between the mechanics of the game and the world it takes place in. For example, in the beginning of the game, it seems as if money is useless and some places are abandoned, like the store where you get food. All the men are dead, but all the women are still around, so why can you freely steal food? A strip club is still open even though there aren't any men around and the game doesn't mention anything about any women frequenting the club. Plus, the strippers aren't getting paid, or even need money to eat, so why are they working? But then it turns out you do need money to upgrade your car as the mechanic lady needs money to buy parts to upgrade your car, so money does still play a role in this world. It's all very convoluted and inconsistent.
The worst part about the writing, though, is the girls. There's 30 of them and none of them have any personality or get any type of development. They're all magically horny for your dick without any explanation. Why didn't the developer just include "all the women are extra horny now" as a feature of the chemical that killed all the men. Girls just jump on your dick at the 1st or 2nd interaction and it's silly and unbelievable, especially when they tell you they love you and your character says he thinks he loves them too. Also, the dialogue is generally pretty bad, with lots of grammatical errors and incorrect vocabulary, but it's especially terrible during sex scenes. Characters either talk too much or say weird and unnatural things, and even try to crack jokes, which makes no sense.
All in the all, the game is a mixed bag. There are multiple endings, but you can only stay with 1 girl per ending, and have to break the other girls' hearts, which is kinda lame given the whole game has been fucking everyone and building your relationship with them. The game also clearly sets up a sequel because another facet of the evil organization's plan comes to light in the middle of the story, but your character doesn't do anything about it. Your character only wants to escape the town, but this part of the plan would make escaping pointless, so including this part into the story without resolving it (or even hinting at a possible resolution) is also bad writing. Your character comes up with one possible idea to combat this new problem, and even talks to a medical student about it, but then the idea is quickly forgotten and never mentioned again. The developer should've left that part out completely and started the sequel off with it instead or introduced it at the very end of the game. Hopefully the sequel happens and it's better than this one. Actually, this game shows that the developer has some great ideas, so if they can iron out the inconsistencies in the sequel, it's sure to be a good one. Good luck!