Mid-Life Crisis for a game set in the present day that has the "wife, daughters, and side piece(s) in one household" aspect, and Hot Sand of Australia for discount Desert Stalker(still worth checking out as it is different enough despite the similarities and lesser quality). Can't think of any others at the moment that are decently into development and/or high quality.
So I'm inclined to say no, it's just most games that go for dad/daughter stuff seem hellbent in making the mom/wife either irrelevent or non-existant, other aspects of it are just harem girls living in different locations which any number of games have. The cultural aspects just add to the immersion of it, but by how much I can't say, as a game being unrealistic but having my fetishes means I get immersed in it anyways.
He's probably just borrowing the one left behind somewhere in the reply chain.
