Because it is a porn game without a story(if you consider I can't live without dicks type is a story), there's no controlling her nymphomania, hence she's becoming the biggest slut she can equivalent of a man. I don't see Anna having a good ending.
her mimphomania can be controlled
before sex scenes there is always the choice to avoid it, so what you're saying isn't true.
The story of Anna that is building her Empire in Sun City is the main story!!
and the story is very good and fascinating specially if you follow the Jeremy alive path
Anna's nymphomania is uncontrollable

... that just depends on the fact that u are a pervert and u choose that Anna can't control her nymphomania.
Any extreme sex scenes is avoidable and this
I REPEAT is solely the choice of the player...
I am a pervert and so I chose for everyone to fuck her in all holes but if you just want to read the compelling storyline contained in this game you have the option to avoid almost all sex scenes.
for example:
Here Anna proposes to the boys she has met on the beach-and who she knows are using drugs-to ask the boys to help her sell Sergey's cocaine to help her expand her business as empress of Sun City
In this scene there are choices to control Anna nymphomania and here is how to avoid the gangbang with the 3 guys
This depending only by player choice and if the player is not a perv this is what you have choice
Anna here is just a businesswoman who wants the loyalty of the boys who have to deal drugs for her.... there are 2 ways to do it...
option 1 nymphomaniac Anna path!
The perverts players who prefer that Anna gives as little as possible percentage to the boys but in this case Anne she will have to offer her body to Steve. Donny and Rocco in an epic gangbang
The option 2 depends on the following player choices
As you can see the story is so well written that it involves Anna being able to control her nymphomania with everyone, including Jeremy...
There are choices to refuse sex with everyone except Andrew...
and about her devoted boyfriend, the player cannot choose...
it is Anna who decides on her own when to fuck her boyfriend.
ANDREW IS ANNA ROMANTIC LOVE!
Anna's nymphomania only prove that you are the one who is a pervert by choosing to have her fuck everyone!
The plot is solid and if you were not blinded by your perversion you would understand the powerful protagonist of this wonderful game much better.
Anna is the perfect heroine who will win her place as empress of Sun City by getting all the powerful men she encounters out of the way ...and she will share her empire with her devoted and apparently loser boyfriend ANDREW!
As you can see Anna can control her nymphomania very well
Have a great day!