This is one of the only "games" that he has made which don't feel like text box simulators (though in design it's actually just a choice based VN if you know all the possible routes) and it has the systems so well implemented that it could have been extended to 50, 100 or 1000 days if the dev wanted, which means it's a system that works should he make a sequel.
The characters are mostly not one dimensional like most porn games and most importantly, the protagonist is not a total loser. This means people who don't really play NTR games could play it and empathize with the protag instead of thinking he deserves it (like most NTR protags) and the game provides a choice to just say fuck the fat cheating whore and go for something better. The archetypes are widely distributed to represent a wide range of personal preferences.
Zombie settings are done a lot in porn and ntr settings because they bring elements of desperation and societal degradation, which makes "crazy" pornographic sexual encounters more believable. This game still doesn't use that to show something which couldn't happen IRL. Of course (with the pacing set by dev) the characters, especially Minjee, do things "too quickly" as they only have like 2 encounters to set the ending path, but everything is in order of how it could happen if it was real.. the desperation has to build up somehow and then she breaks.
If it's played blind once, and using a walkthrough after that, it has plenty to offer to the player despite being on the shorter side. Definitely not "dogshit" in my personal opinion.
