OK, let’s try a copy/paste and hope the list stays formatted correctly. They’re all available on Ao3, but orphaned.
.Never Said a Word Beneath the Calm
Dean/Sam (Pre-Slash), mentions of Dean/OFC; NC-17
Season 1. A wave of Missing Persons cases at an upscale couples resort catches the Winchesters’ attention, prompting them to go undercover to investigate. Dean figures there’s no harm in faking a romantic relationship with his little brother as long as it nets them the best service the hotel can offer, but it’s a little unsettling how easily the pretending seems to come to him. Especially when Sam’s acting has never been quite this good before.
Feel About the Same Most Every Day
Dean/Sam (Pre-Slash), mentions of Dean/OFC; NC-17
Season 2. Sam doesn’t know that Dean wants to touch him…
My Love, the Pleasure’s Mine
Season 3. While investigating a rash of magically-induced hook ups, Sam and Dean get hit with a fuck or die curse. It would be a lot easier to deal with if the witch wasn’t being such a smug bitch about it all.
Who Are You? (I Really Wanna Know)
Tag to It’s a Terrible Life (4x17). Ever since Sam Wesson moved to Ohio, he’s found himself in an exceedingly terrifying series of battles against his own brain—and the attractive man he keeps bumping into with the strikingly green eyes is Sam’s only clue as to why. Meanwhile, Dean Smith’s next promotion is practically in the bag until he starts stumbling over a succession of worrisomely inappropriate outbursts. The cute, but creepy IT guy who keeps leering at him really isn’t helping things either.
If You Like to Gamble, I Tell You I’m Your Man
Season 6. Sam’s got his soul back and is aching for his brother. But how is he supposed to pick up where they left off, when a year has passed for only one of them?
Yeah, I’m a Back Door Man
Sam/Dean, Dean/Sam (ER), mentions of Dean/Lisa; NC-17
Season 6. Dean’s never had an issue with sacrificing something in order to make his brother happy. Wanting it, now that’s the problem.
As Our Feet Find the Sand
Season 6. The last thing Dean is expecting to see during a basic hunt in Maine is an honest-to-god merman. But when that becomes the least weird thing he and Sam have to deal with on the whole case—well, that’s when he knows he’s fucked. Because no matter how much his brother promised to help the guy out, tails of their own were not part of the plan.
Season 8. All Sam wants to do is take a tiny break for his brother’s birthday, but a case that Dean refuses to pass up and a run-in with a cursed sword sends the Winchesters Quantum Leap-ing through other people’s lives. Sam just wants to get back to their own bodies. Dean bets Sam Beckett had a much easier time of it.
Have You Ever Wanted to Try?
Sam/Dean, Dean/Sam (ER); NC-17
Season 8. There’s nothing wrong with a little make-believe…
All I Want Is to Have My Peace of Mind
Season 9. Dean thinks Kevin might know about him and Sam. Well, he’s not certain, but he’s pretty sure. Really pretty sure. At least, he thinks he is.
Burning Love Comes Once (In a Lifetime)
Coda to Bad Boys (9x07). Sam is glad that Dean opened up about his past a little, but he’s pretty sure he’s not going to be able to bring any of it up without sounding like a jealous girlfriend. Well. No more than usual, anyway.
For Your Lover’s Lover’s Alibi
Tag to Black (10x01). “This is Dean’s other other cell. So you must know what to do.”
Season 10. It’s exactly what they need. A vacation. That’s how Dean can make everything else go away. Cas was right. That’s all they need. A nice, little vacation.
Turned on to the Sunset (Like I’ve Never Been Before)
Tag to About a Boy (10x12). If someone were to ask Sam why he’s feeling this way, he’d say that it’s because he’s missing his brother. His actual brother, who is very clearly of legal age. Or maybe he’s just a sick fuck. …It might be a bit of both.
(Prefer to read it in Russian?)
You Took My Body and Played to Win
Sam/Dean (ER), mentions of Chuck/Amara, mentions of Sam/Toni (Noncon), mentions of Lucifer/Sam (Noncon); R
Tag to The Foundry (12x03). Sam’s used to it by now. Really. It’s not the first time this has happened to him, or the tenth. Hell, it’s not even the hundredth, as shitty as it is to admit. And honestly, this one wasn’t as bad as the others. Not even close. Not by a mile. Sam’s used to it by now. He is. He…should be used to it by now.
You’ll Hear Your Brother’s Cry
Coda to Regarding Dean (12x11). It’s a funny thing, having a human being as his rock. The emotional center of his world. Sam knows the dangers, the risks and psychological pitfalls of being too reliant on his brother. He just doesn’t think his heart does. After all, it’s not like it’s ever listened to him anyway.
I’m Your First Taste of Romance
Dean/Sam (ER), Sam/OC (Dubcon); R
Season 12. “I think you have a piece of siren in your hair.”
If It’s a Make-Believe (I Say It Ain’t)
Season 12. It’s Sam’s fault, really. Dean testing out all his ridiculous pick-up lines on him was torturous enough. Knowing they were going to be used on other people stung a bit more. But even despite all of that…he still should’ve kept his damn mouth shut.
You’re Ready and You’re Willing
Tag to Scoobynatural (13x16). Sam’s not jealous, okay? Or curious. Despite Dean’s perverted obsession with cartoon porn.
I’m the Damage Done (Your Scar of Yesterday)
Coda to The Scar (14x03). It’s been weeks, and Sam doesn’t have it in him to wait for Dean to sort through this mess himself.
Deal Me Up Another Future
Dean/Sam, John/Mary, Sam/Jess (past), Dean/OFCs; NC-17
CD from Lebanon (14x13). The needle skips. A different choice is made. The song plays on.
Too Many Fingers Pointing to Your Grave
Sam/Dean, Sam/Ruby, Dean/Starla, Sam/Amelia (ER); NC-17
Noir AU. Singer’s may not be the most popular nightclub in this or any town, but at least it’s Sam’s. And with a new fiancée to provide for and a rotten string of bad luck perpetually hounding him, he needs all the breaks he can get. That is, until the night Dean Campbell, a hardboiled P.I. from Sam’s less-than-reputable past, walks in through his door. As people around town start turning up dead, Sam finds himself being drawn ever deeper into the man’s most recent case…and inexorably closer to the gruffly charismatic detective himself.
But Gently Pulls the Strings
Dean/Sam (ER), Dean/Lisa, Lucifer/Sam (Noncon); NC-17
Royalty AU. When the Queen of Winchester finds herself unable to produce an heir for the kingdom, her ensuing plot results in two boys being born in secret and raised as companions—the elder a prince, and the younger, a simple commoner. Unaware of their shared parentage, Dean Winchester and Sam Campbell grow up to fall deeply in love, keeping their affair hidden from the gossiping mouths of the court. But when it comes time for Dean to choose a spouse, the lovers are forced to contend with not only the weight of their scandalous past, but also Lucifer, the sinister archduke vying for Sam’s hand in marriage…and Dean’s rightful place on the throne.
Alpha!Dean/Beta!Sam, Alpha!Dean/Omega!Sam (ER), mentions of Alpha!Dean/OCs; NC-17
A/B/O AU. As a beta, Sam shouldn’t even be attracted to his alpha brother (much less be yearning for Dean to finally take that last step into claiming him officially) but, a few compatibility issues aside, they’re happy with the pseudo-mateship they’ve got going on. At least, until a hunt-gone-wrong ends up with Sam being cursed into an omega. He and Dean race to find a way to reverse the spell before it’s too late…but now Sam’s not entirely sure if he even wants to be cured.
· Fleetwood!verse: (AKA: The Reverse!verse series)
You Feel Good (I Knew You Would)
Angel!Sam/Angel!Dean; light R
Reverse!verse AU. After saving the Righteous Man from Hell, Dean is assigned as the man’s guardian. But his brother, Sam, is tagging along for the ride…and the emotions of Dean’s human vessel might just prove a bit too much for him to handle.
Angel!Sam/Angel!Dean, mentions of Human!Castiel/Meg; NC-17
Trying not to commit sacrilegious incest with your angel brother is a lot harder than it sounds. Or: Dean deals with some newfound frustrations and discovers the art of self-loving.
My Love Is Higher Than a Mission Bell
Angel!Sam/Angel!Dean; NC-17
Thou shalt have no other Gods before me…
Or an Everlasting Feeling
Angel!Sam/Angel!Dean; NC-17
There once was a woman from Bethlehem with dimples carved into her cheeks and a slanted gaze. She prayed to the Heavens every single morning. There once was a man in Assyria with unnaturally green eyes and the calloused hands of a warrior. He said “yes” the very first time he was asked. There were many more after that. …Dean doesn’t remember a single one.
· Bowie!verse: (AKA: The Wincest Space Opera series)
Put Your Ray Gun to My Head
Sam/Dean, Dean/Sam (ER), mentions of Dean/OFC, mentions of Castiel/Meg; NC-17
Sci-Fi AU. Sam and Dean Winchester are bounty hunters with nothing more to their name than an outmoded Impala-class junker and a shoddily-repurposed government android. But when a slip-up during a case leaves Sam with 48 hours before he turns into a bloodthirsty killing machine, the brothers are pulled into a twisted conspiracy that will test not only the strength of their love for each other…but the very meaning of free will itself.