Finding those requires a pretty specific search approach. Most mainstream platforms tend to bury the really inventive stuff under mountains of popular tropes. I’ve had way better luck in smaller, niche forums where people are actively sharing weird, self-published gems they’ve stumbled upon.
The key trick is to search for the plot element first, not the genre tag. Instead of looking for 'erotica with twists,' try looking up forums discussing 'body swap horror' or 'sci-fi memory theft.' You’ll often find threads where someone goes, 'this reminds me of this wild story where...' and bingo, there’s your lead. A lot of those stories live on personal blogs or on sites like Scribble Hub, posted by writers who are just playing with a cool concept and aren't overly concerned with genre conventions. The writing quality can be a total crapshoot, but the ideas are frequently out there in the best way.
Honestly, half the time I find the good ones linked in the comments of a completely unrelated Reddit post about surreal writing prompts.