vore/gore/rape/violence (in the bedroom, I don't mind if there's a streetfight in the story, but I do mind if it's in the bedroom), necro/loli/shota/trap/scat/vom/prolapse/bestiality and excessive verbal abuse (Stop kicking when someone is down please).
Also not into gay, futa, urination or sleep sex but it's not an insta 'I'm out'. For sleep sex it depends a lot on the level of it because it seems to span from admiring their lingerie clad body in the moonlight to busting a nut inside an orifice. I'm okay with sneaking a peak at their lingerie, I'm not okay with the unrequested sperm donations.
And the other direction, fine if a character sees the MCs dick and goes 'woah, meaty', not cool if they 'have a taste' at night. Too noncon for my tastes.
Oh, and I don't care if it's avoidable, I've played enough games where an exception occurs, I press ignore and end up in a different scene. So the scene being in the game means I won't be playing the game.
I'm glad there is a wide variety available for all of us and I'm happy for everyone to enjoy their own kinks.
Oh, and I'm indifferent on NTR because rarely is the writing good enough that I feel like I AM the MC, so seeing a cute girl get railed by someone not me doesn't bother me, after all, still a cute girl getting railed. I don't download because it has NTR but it also doesn't really weigh all that much against downloading either.