Kings of the Night (http://archiveofourown.org/works/1029836/chapters/2051280) by dualityforce: "Nine years ago, Mary Winchester was killed by a demon with yellow eyes, leaving her mate and two young sons angry and desperate for revenge. Now, the demon will learn that the only thing worse than a pissed off hunter is a pissed off werewolf... or three." (Sam/Dean; 24k words)

Dust in the Wind (http://lyra-wing.livejournal.com/100679.html) by lyra_wing: "Future fic. Erm. Hard to explain. This is a crossover with American Gods, but you don't need to read that to understand what's going on." (gen; shortish)

A Vision of Black Steel (http://hunters-retreat.livejournal.com/308404.html) by hunters_retreat: "Dean Campbell was reckless with a hot temper and a wild streak that should have kill him years ago. The Order didn't suffer fools lightly though so it was only Dean's abilities as a hunter that kept him in their company at all. When a hunt leads to an unexpected discovery, Dean follows his instincts and trusts where he has no reason to. What will the Order do when they find out about the wild man following Dean around, and what secrets does this man hold for Dean's future?" (unrelated Sam/Dean; 19k plus timestamps)

As Through a Glass and Darkly (http://archiveofourown.org/works/524025/chapters/927238) by lexicale: "Everything is the same, except for how it's different. Sam and Dean grow up with two mysterious guardians, a demon and an angel respectively, living in their shadows and preternaturally bound to them. They still move all around the country, saving people, hunting things. There's still an acceptance letter to Stanford and a family full of pain and anger. There's still an unbreakable bond of love and desperation between two brothers -- and there's still a man with yellow eyes with secrets enough to shatter the world. A re-write of Supernatural with Hindu mythology as its basis instead of Christian mythology." (Sam/Dean; 118k words - this is one of my very favorite stories)

On a Wing and a Prayer (http://sinestrated.livejournal.com/44354.html) by sinestrated: "It's a slow, almost lazy night at the bar when the Winchesters walk in." (Sam/Dean; 6k; classic for a reason)

Old Country (http://archiveofourown.org/works/164479) by astolat: "Sam and Dean go to Hogwarts." (Sam/Dean; 41k words; not sure if this is exactly what you're looking for, but it's a great story where they both work magic, so I thought I'd recommend it anyway)

Do you only want recs where they're more than strictly human, or are human-badass recs good too?

Thank you for the recs! More than strictly human i would say.

Apparently 99% of the non-human-Winchesters fics I've got bookmarked involve the boys turning into kittens or baby rabbits, but here are the few fics that might fit your criteria. They're all gen.

dragon!boys: On The Way Down (http://sowell.livejournal.com/81819.html) by sowell
The one where Dean and Sam say, "Fuck hunting, let's go be dragons."

other!boys: The Sum Of His Parts (http://kellifer-fic.livejournal.com/244925.html) by kellifer_fic
Some said those boys were so wrapped up in each other, it was like they were one person.

psychic!boys: In a Desperate Land (http://www.fanfiction.net/s/3577231/1/In_a_Desperate_Land) by Kansas 42
Desperate times call for desperate measures. Dean makes a decision with a little help from Jim Morrison.

This one's mainly BAMF!Dean, but whenever I think of the whole using-powers-to-inflict-total-devastation trope, this is the first fic that comes to mind, so I kind of had to include it:

trickster!Dean: Dog Eat Dog (http://www.fanfiction.net/s/3417933/1/Dog_Eat_Dog) by silver ruffian
Dean changes after a botched hunt; the boys deal with it.

Holy Shit, theyre all awesome!

Yay! Glad you liked them!