Good question but.... what do you think? if it's an overused trope how would you replace it in an incest game AND non-incest game?
You are right about all the asshole dads, but also think about how a good dad would react in an incest story to his son having sex with his daughters all over the house and having sex with his wife? If we go further, would a good dad not want to spend time with his family? that would cut into the time and opportunities the son would have with his sisters and mom.
The mom and sisters have a role in the story as LI but what would a good dads role in the story be? you can't use him as someone to give advice, he'd be in the way for the sex scenes. What would his role be in a story where the mc is inlove with his mom and sisters or trying to corrupt them? What interactions could the mc and a good dad have to move the story forward? After all that there would still be the people complaining that the game is NTR...
In a non-incest story how would a good dad react to his son bringing woman after woman, girl after girl home and having sex with them all over the place? How could the son do this and NOT be seen by his sisters or mother or the dad himself? What would a good dad say about him having sex in front of his sisters? If the son doesn't have sex at home then the only real point to "home" is a place to sleep and pass time? why not just sleep at the girl or woman's house you had sex with and leave the "home" out all together? Then do you really even need to see the rest of the family? At this point what role would a good dad have in the story?
It is a good question but in my opinion I don't think there are any other real options without making any story really DARK.
Having a good dad that is alive and at home would put the MC in the position of screwing over his good dad who is supposed to love and either stealing his family or setting a very bad example and that is a pretty dark twist to any story
As long as everyone has this idea that incest is ONLY between a son and his mother and sister(s), you are correct, there probably won't be a lot of 'good' roles for a father in a game. I mean, it would be completely impossible for the MC's dad to have married his own sister and is okay with his son 'getting jiggy' with his own siblings, while leaving mommy and daddy as side/background characters.
Also, unless you are trying for some type of underage loli/shota theme, the MC should be an adult. There is nothing to say that the MC couldn't have his own place, in the same town, and just hasn't 'cut the cord' with the family and regularly visits home while maintaining his own living space to 'bring da Ho's' to. I know it is a completely insane idea to think that the MC is a living, thinking, rational, adult, who can support himself (and just has the hots for his family), but hey, I have had dumber ideas.
Here's some ideas:
- Mo and Dad just didn't 'click' as a couple and after an amicable divorce, drifted apart and lead separate lives. The kids visit dad on holidays (or vacations), but dad is just a bit of background lore and not some hated, dead beat, douche that everyone wants to see dead.
- Dad was just as much of a degenerate pervert as the MC is and has no problems whatsoever with his son chasing after his sisters/aunts/cousins, but just makes it clear that Mom is off limits. Because, you know, he did the exact same things himself.
- MC has a stable life, with a steady job and his own place and sis/cousin/aunt/neice wants to move in with him to get out from under Mom and Dad's thumb or he has the capacity to support them through some hardship. Shenanigans ensue?
- Dad and Mom had a hard falling out (because Mom was the douchebag) and 'the good son' becomes his wing man to score/hookup with some mom/daughter pairing or sisters/daughters/aunts/cousins that step up to take Bad Mom's place? I know the NTR complaints would kill that idea, but if it were possible to make an incest game, without it being a harem game (dating sim maybe?), maybe the complaints wouldn't be so loud.
- How about leaving mommy and daddy out of the sex, having them around as side/background characters, and it is just the MC/siblings/cousins/aunts/nieces sneaking around and humping like bunnies? I am pretty sure that incest doesn't HAVE to include mommy.
- A single mom scenario? Dad was the town stud and sired quite a few kids with various women around town and, while not a Bad Dad, he just felt it was better for him to move to greener pastures, while mom harbors no ill will towards her ex and just wasn't interested in getting married after that. The MC's 'harem' could include a couple half-sisters that he finds out about later in the game.
- Son goes out and pays for a prostitute and finds out that he just paid to have sex with his never wed mom/sister (well, don't have to worry about dad at least)? Sexy times ensues, where the son pulls them out of that work or corrupts them and becomes their Pimp.