Acting Lessons is a well written game and I understand you don't want to give out names of your books or publisher name but which games have you written for so people can try those out for a good story line?
I have written for no one as doing so would take up my working time which i would have to compensate for money. Something most devs would not be able to afford. So i just give them advice. Starting mostly that sexual encounters are all about the feeling, the taste, smell, goosebumps etc. not about just yay pussy lets fuck. In VN you have the advantage to give pictures or even animations but the best animation can be increased in experience if you describe it right. And VNs live by the writings and then by the pictures and/or animations.
Same goes for characters most are shallow and only one dimensional. Making a three dimensional character is not hard but it takes time. The easiest and shortest way is to draw out fears, humor and relationships to each other. Boom you have a believeable three dimensional character. Of course you should focus on the MC first then on the main characters she/he interacts with.
For a story the answer is mostly pretty simple. Ask yourself if this would happen in Real Life what would it look like? Humor, Disgust, Surprise, Curiosity etc. All stuff you can use to make a scene believeable.
No one believes ppl just fuck out of pure plot.
As example a sister doesnt hump her brother out of the blue. Is she curios about sexuality? Is she a bitch but secretly in love with the mc? All that can make a character more believable in and of itself.
Well written stories according to my standards are
Acting Lessons
(this game should be a blue print on how to do a well written story with believable characters and story elements) You have a main plot, Side story, plot twist and a good amount of humor to make it feel real.
On top of that you have a bromance that is not only integrated into the main plot (wingman) you feel attached to the bromance even more then to a chick in this game as a male. Tradegy also plays a significant role and makes the story even more sink in.
Melody
(Where mr. Dots proofs he can do three dimensional characters well and a story that makes sense. If he keeps this standard up he will make alot of money in the future)
Akabur games
(the story is mostly garbage but the characters are well written and stay true to the portrayed characters of each fictional universe and they are good for a laugh so humor is the main source driving akabur)
Big Brother
(Story meh, Characters especially the older sister believable af. She is bitchy. in Love with the MC but her bitchyness stays up at all times. Like older sisters mostly are. ^^)
Milfy City
(Story is believable and well written the blue balling makes sense inside of the story elements. No incest relationship starts out of nowhere you need a build up and the game does it great. This counts for the sisters as the mother is just straight fucked up horny all day. Also believable if you take into a account a mother/son complex disorder.
Summertime Saga
(Not only makes the story as it unfolds for the mc sense from a fictional point of view you have characters by the mass and they all are different in their own way. The sister is a bitch but secretly loves the MC. The mother is driven by guilt and love for the loss of the father and the aunt is straight up focused on work alone by all means necessary)
The Twist
(you cant go wrong with this one. Story is funny even tough most of it is beyond ridiculous but the characters all have a different reason to have a sexual encounter with the MC something you can just suck out of your fingers. Was a lot of fun playing this one. With this you also have a lot of humor that drives the story on.
I played them all and can honestly say they do more things right then they do wrong. Of course you could improve alot by writing alone and there are more games that have a good story but when the main focus is on and about sex you NEED a believable story and believable character development.
Otherwise you just made a time consuming fuck simulator no one will think about after fapping. And the main focus is to make money of it and generate income. For that you must hook the audience with something they cannot get elswhere and that is a good writen story. Three dimensional characters and a believable plot.
Also some good games are
Long live the princess Not sure if i got the name right but i enjoyed the game non the less.
Something unlimited (Not for the story but the characters are true to their fictional universes)
Tangled up (story and characters are well written and the sexual encounters happen out of curiosity and love)
The fate of Irnia (Story good, characters good, What else you need for a good game?)
I could go on but that would consume even more of my time. I cant write all day such long posts. I got to work also ^^