Compared to contemporary porn I have the impression that the girls in BB games lack sex toys ... I would expect most girls/women today having at least a couple of dildos, vibrators, a butt plug, etc. in their bedside locker. (And a lot have more kinky stuff like ball gag, paddles, handcuffs, blindfolds, etc.)
Using more sex toys in the game could lead to interesting events ...
The story was not well developed, but if we're going to create a side story here the family moves to a new house and Alice wouldn't have these sex toys. Today most girls have cell phones or if it's the 2010s they would have cameras. So, it's weird for the developer not to think about putting Lisa in front of the mirror taking pictures of herself and Max peeking on seeing what she's doing, this could trigger future events for Lisa sending nudes to her friends at school. As for Alice, she could have at least one dildo where Max discovers searching her room and triggering an event that makes him peek on her touching herself at night in her room. I never liked the idea of making Alice a lesbian, because the game never made sense to me, because she lets Max touch her. Lesbians only like women, just as fags only like men. As for toys, I think Eric's idea to bring some toys would be interesting, like blindfolds, ball gag and handcuffs for use on Ann. So it would start with the first event between Eric and Max with blindfold, second event, ball gag + blindfold, third event, ball gag, blindfold + handcuff. Max will learn to use toys from Eric or Kira. Kira or Eric could order a dildo for Alice and an anal plug for Lisa.
Ann talks about Eric proposing really soon ...
Max can listen to Eric talking to his real girlfriend when on the wallet path ... there Eric reveals that he wants the house.
I don't remember if Eric wants to kill everybody or just dump them. Since he controls Ann, marrying her would allow him to take direct control/ownership of the house.
The plot is very weak considering that Eric is using a false name and don't want to draw attention by certain people ....
I guess it was added to promote Eric from rival to villain just before Max get rid of him ...
Eric just wants to take over the house and the girls, make them his sex slaves. If his objective is not that, I wouldn't understand what the meaning of Eric's role would be. The idea of killing everyone in the house and taking over the house would not be a smart idea, it would be easier to kill Max because he is the one who gets in the way of Eric's plans. Unfortunately Eric didn't have an elaborate backstory, what it really is and what would be its purpose, if he has a wife, family, if he owes someone, or if he's just a crook.
Your memories are pretty vague and don't match what happened either. I see Eric as a stranger who sneaks into the house and Ann is not enough for him as a woman. No, he also wants to fuck her daughters and sister. Character-wise a total disaster. In the process, he abuses Ann's mental weakness. She was kidnapped and raped as a child and probably suffers from Stockholm syndrome. That's why she doesn't object to Eric's nightly visits to Alice and doesn't object to Lisa's sex-ed and agrees to punish her children, which is Eric's idea. Nor does she do anything about Erics forcing Max must go to camp. This is a totally unbelievable sick story!
That Max is a little pervert, of course, is also clear to me. It´s a porngame. There was already a camera installed by the father. He needed money to buy the bikini and dress earlier than Eric. It was important for the story.
He definitely didn't rape Kira. It was video footage and more of an SM game. Drugging Alice is a bit of a stretch. Alice is simply reacting to alcoholic candy. It was not sleeping pills or other pills that make her submissive.
Eric is not a stranger, he meets Ann in his work area and just flirts with her. He behaves like a gentleman and Ann falls in love with it, after all, she is a single mother. He doesn't abuse her mentality, she's an adult, she probably didn't tell him about her past, she likes having sex too, it's not because she's a mother that she's not be a vulgar woman. Now, look at the clothes Alice and Lisa are wearing, especially the teasing way they are, Eric just manipulates Ann, making her think she's wrong or with outdated thoughts, that's why he tries to teach Lisa sex education, with Alice, he keeps a secret from her, as he is spending money on her, giving her gifts and money for her to go out.
The punishment comes long before Ann meets Eric, because the dialogues between them saying "I thought Mom forgot this idea of punishing us". Eric just encourages Ann to spanking them naked for them to be embarrassed. In the original game, he would start punishing girls not in public, but it just happened to Alice and I couldn't see what happened.
Max doesn't rape Kira in that scene like most people think, if it was rape, Kira would react, thrashing or screaming. Kira just says ''no Max'', he just pushes it a bit and Kira gets carried away. In that you are right.