In other words, yet more gibberish.
I'm sorry you're having trouble understanding basic things.
Might want to brush up on your reading comprehension, because I said nothing of the sort.
then what were you talking about?
It doesn't have any ntr.
There are no love interests for Max, only "fuck interests". The closest thing to a love interest, is Lisa, purely down to them becoming (unofficial) boyfriend & girlfriend.
You literally have not.
All you've given is your own supposition that's based entirely on Max's ill informed assumption and what you want to be happening combined with making shit up. That is not evidence.
As the saying goes, you can't prove it to the blind. And even more so if he lacks the concept of logic and causation.
So now he's raping her?
Yeah, no. That's completely out-of-character for both of them.
This can be called in different ways, it is quite a formulaic technique used by porn games, very often there is a "love potion" or a "mind control" tool, in this case alcohol is this tool.
Max doesn't neglect to use his sister in this way, so what's stopping Eric? After all, he was very pleased with this information.
Her remark about what?
Many things were abandoned during development. Not least of which is the mystery of the house and its first camera and the connection between Ann's ex-husband and Eric.
Yes, the point is that the game is abandoned and there are many ways to a dead end, such as corrupting the mother with the help of Eric or corrupting Alice with the help of a spanking for smoking.
But the vector of the game idea is still clearly visible almost immediately, although, as I noticed from the posts on this forum, not many people understood it, someone wants Eric to not exist at all, someone pulls the whole blanket towards NTR and sharing partners. But these should have been only possible options.
Regarding the father and the camera in the house, there is too little game plot to explain these events, so that clarifications would be made, this case is more suitable for the final twist.
However, the idea that Eric could theoretically be somehow connected with his father appeared to me from the very beginning and this is a very plausible option.