I just completed the content in this update, and I have to really give the dev a standing ovation for creating content that's (strangely) so hard to find in adult games. Not only the fantastic and super sexy swinging and sharing content within the family, but the very fact that the MC has a father and brother who are a positive part of his life in the first place.
In so many games, the MC either hates his dad, his dad is dead, or he hates his dead dad. There are very, very few where he has a positive relationship with his living father, and the ones that are out there, the dad is usually either feeble or all but neutered. So to have the setup that we do here with the healthy, virile, wise dad who loves his kids and wants to include them in the massive amount of fucking that he's had going on is really something special and very welcome. I've neve been able to wrap my head around the need for the level of antagonism and outright hatred that some devs pour into this part of their material. In fact, to even have any other male characters who are both friendly and sexual is like finding gold.
For me, porn in any form, but especially games are about fantasy. And my fantasies don't include anger and hatred, but rather being welcomed and made to feel like my character belongs and is wanted, and can be part of a group instead of just a loner who's the only man on Earth who's getting any.