The best of these games already. Appreciate that it's a proper game and not just porn, makes the actual scenes way better; it's also quite funny at times and the story is engaging. I like the diversity of the characters too. From a sexual standpoint the scenarios are top tier, original, and just hot, way more hot than anything else out there.
Some kinks to iron out:
The text boxes are a bit janky and take too long to go through, + there is no skipping feature.
Some of the additional dialogues based on previous events (which is an amazing idea btw) will play in unnecessary situations, for example
I also suggest expanding on these with even more tiny changes in dialogues, it's a really good implementation thus far and works really well!
The writing is very good overall, but the parts when a girl is being introduced are a bit childish and borderline creepy (this FEMALE has an amazing body omg!!!), and repetitive. Showing, not telling, is always more effective (!)
The game isn't difficult yet but I died on the first zombie and had to go through the scenes again (very annoying when paired with the slowness of the text boxes). I like that it's not another immortal protagonist, just a warning would be nice somewhere.
Currently it's obvious which NPCs are the ones with content but it'd be nice to have further indicators at some point like names above their sprites etc.
The scenes having the transparent map as a background can be a problem sometimes, like the flashing message terminal during Ivy's scenes.
The QTE is a bit disorientating because the keys move around, it'd be better if they were still.
Good luck with development! One thing I'd advise is not to focus on churning out as much content but just moving towards the end of the story you have in mind, these approaches always dilute a game and make it worse, using the experience to make a new project is always better. And I'm only saying this because this game is truly good and doesn't deserve that kind of porn-addict-milking-treatment. Have fun!