Not to critique this game in particular, but what's up with all these incest games beginning in new towns/houses? It's like part of the Incest Game Starter Pack: New House, Bitchy Sister, Mom in Financial Trouble, Main Character Under 85lbs and/or 5'2", Insane Aunt With No Moral Compass, etc. The houses thing seems particularly strange to me. Like, it doesn't add to the story, or prop up any critical plot elements. You can't call it a plot device or lazy writing. So ... why do so many have that in common?
At the risk of defending hack porn authors, it's actually pretty hard to do an incest story outside the house while it's set in the current era. If a character starts legitimately going out on dates with their mom, for example, they run the risk of meeting somebody they know outside the house and rumors spreading around town about them. Either that or the author has to explain why X person they meet is totally down with consensual incest or why the whole world is totally fine with incest. And if the world is okay with incest, in my opinion that kinda ruins the fun in most cases (one exception is Geeseki's game, where this actually sorta works).
General principle: seduction that overcomes obstacles is what makes fictional sex interesting.
All that being said, I would LOVE to see a swords'n'sorcery or sci-fi style RPGmaker game with battle systems and party mechanics, spread across a sprawling world, where the main sexual content is incest and it doesn't primarily take place in a house.
But to my recollection, the only dev to even TRY this idea is Lawina/Boner Games, and while the first release of Game of Boners was pretty decent, no reputable source has actually seen the promised 0.2 update since the initial release of the game last October. So I'd say: if anybody wants to try making a legitimate non-house-bound adventure incest game, I want to play it. But for the time being, I'd classify 'incest games that take place in a house' together with 'harem games that take place in a school' as genres that exist for plot convenience rather than just lack of creativity.
Edit: I somehow missed the 'new' part of the new houses/new town critique. Again, I think that has to do with allowing for rando strangers not thinking anything weird is going on when some dude tongue kisses a girl who looks suspiciously like him. In that regard, it allows for a
little more flexibility in terms of going outside to have the family in a new town rather than the one they lived in. But yes, it also allows for hack writing where nobody has any pre-established relationships.