Big Brother is a game with much potential, though at times a bit of a grind overall quite smooth. The story was fairly simple yet effective, I found myself playing a few hours of this just due to pure intrigue as to how the event system worked. With all that said I have one question how do you do anything with Olivia, every time I tried to talk to her when she stopped by the pool Alice what say "Can't you see we are busy here" and in reply the MC would leave, how does one go about resolving this?.
It's a game with much potential but with very little unleashed.
The game had great scenes that I actually have to like a lot, like the first time when the mother was bathing and the MC taking a shower at the same time, that situation was quite well done in my opinnion.
The characters are likeable indeed and the story is simple, but because of this we can find easily the things that it lacks.
First of all we don't truly have a concept of time, every day is a repetition of the last and the changes originate on "if you advanced the opportunity or not". In fact it's actually funny when you analyze it, for example take the opportunity "mentor", this one as many may know is blocked by Eric if you are currently at peace with him and advance it a little bit, however it serves very well to show the defects we have here, because if you don't progress the opportunity a bit Eric will never give lessons to Lisa, same with his advances with all characters, if you can even call it that.
Now, if you think about how to solve the problem it's quite easy and it gives the player a sense to act, imagine that same opportunity "mentor", but if time pass Eric relationship with Lisa improves and he talks to her about giving her sexual lessons and she accepts, this would make the player feel the "need" to do something. But that motivation doesn't exist in the real game, you will just let time to continue it's course without care, just preparing as much as you want before confronting Eric. Even the whole "war" with Eric is quite so-so and that is because it wasn't very well planned.
This is my personal opinnion but here I will expose how would I think it would have been better that part of the game:
-Until the day Eric confronts you with his plan everything is okay, it is debatable if the romance between your mother and Eric is a bit too fast but I can understand it.
-How Eric confronts you is too direct and with very little imagination, personally I would rewrite the conversation to something like:
Total refusal:
Eric: "I can't help but see that you don't like me and I understand seeing as for you it's like a stranger suddenly appeared in your life, takes your mother and invades your house, I can respect that because it means that you care about your family, however I hope that at least you give me a chance"
You:
-Option A: I will try...
-Option B: Never!
Option A:
Eric: "I'm glad to see that not only you do care about your family but that you are even able to confront your feelings and think about what's best, I hope that we become good friends in the future and if you need something and I can help just ask me"
Option B:
Eric: "I suppose I was going too fast again, it's not something that you can change your mind instantly and I should show you that I'm dependable and someone you can trust".
This is just a tiny example of what I mean with the dialogues, it goes too much to the point, why did Eric need to show his ugly personality at that point?, it would have made more sense showing himself as someone who can understand, someone who isn't an enemy while he is preparing his plan.
The MC would need to see questionable events before they can truly confront Eric, like Eric spying on your sisters for example.
About the flow of events I would have divided it in 3 phases:
-Mother relationship with Eric "very close" (initial): Eric comes to your house 3 days per week and will be mostly with your mother, very little interactions with the sisters or aunt.
-Mother relationship with Eric "submissive": Eric is staying in your house from Monday to Friday and interacting a lot more with the rest of the family, mainly trying to be trusted and gain opportunities (like for example Lisa mentor opportunity but with Eric version). You could also see the characters trusting him more, defending him a lot if you say something bad about him...
-Mother relationship with Eric "slave": Eric is staying in your house all 7 days in a week and focusing mostly on your family, he will still be trying to seduce them but one difference is that the mother won't oppose even if he has sex with her daughters in front of her.
This flows of events is only to show the urgency of the situation and if you don't do anything it would become worse... and quite fast!.
Next would be necessary counters to Eric actions for both peace and full war to delay his progress while you are preparing to kick him out of your house.
Personally I would have liked him to be quite the antagonist because it's the only thing that could make the game advance, the rest of things are quite "non time related" so it's something like "try to find all the scenes calmly".
Of course you could also have added more enemies or rivals after defeating Eric... like for example your own father, that had a secret plan against your family or something like that.
I wanted to just show an example of why I think the flow is bad and the game is direct so just take it as that. It doesn't mean that the game is bad or anything else, but I think this game needed a good writer thinking calmly about character reactions and plot.