A game I've been wanting to run but can't seem to ever get off the ground is a game in a fantasy setting with heavy themes of bondage, slavery and misogyny. The basic idea is that the game is set in a world where, due to recent political shifts, misogyny and abuse of women or outright female slavery is becoming more and more acceptable. One of my favorite versions of this is through immigration of monsters: essentially, rather than continuing to fight against the forces of darkness, the noble races decide to make peace with them, hoping that it will spare them further bloodshed. It does, but now they don't really have an excuse to keep orcs or gnolls or worse out of their cities anymore. This leads to the formation of monster ghettos, where the town guard is afraid to tread and the monsters are continuing to push the limits of what they can get away with. Over time, this would lead to cultural shifts as more monsters move in once they learn that the humans aren't going to push back. Of course, the result of this is women being harassed, raped and eventually enslaved by the monsters. Worse, the regular men start to adopt some of these practices as well, since the crown obviously isn't going to enforce laws the same way they once were.
Another version of this would be for a princess or noblewoman to be married off to a noble or king who enforces heinous laws on his women, similar to how the monsters above treat them. It would be a balancing act between trying to retain her dignity while staying on his good side, because the punishments for disobeying her husband are strict and degrading. She needs to ensure that the marriage goes well, but she would rather be married to anyone else. This would also work for a queen visiting a foreign kingdom with such practices and having to abide by them while in these lands. Rather than the usual cordial diplomacy she's used to, she needs to grovel and humiliate herself to make any sort of progress in negotiations.
I keep running into the usual two issues with these premises: I don't click too well with the partner because this kind of game would work best with someone with few to no limits, or they just vanish after a while. I mean, I get it. There aren't many people who'd be into this kind of thing, but it'd be nice to find someone with no limits and a lot of passion for the game. A pervert can dream, anyways