Inspired by AFWTMT's SW vs 40k Fanfiction series. While war rages on across the galaxy, the Mandalorian people are caught nearly completely off guard against the invading Imperium of Man. Unprepared, and facing an enemy that would stop at nothing to get what it wants, the fate of Mandalore and her people hang in the balance as a ruthless foe begins it's march forward.

"Lord Inquisitor, I hope this missive finds you well. My exploration team has found something I believe to be of interest to you. The Terrix sector, believed to be a dead zone of warp storms and hell worlds, appears to have a gem of sorts hidden at its core... The world is vibrant, and covered in life that scans seem to tell are Terran in nature. " "I hope you will take interest."

Scattered, in a world where their emperor never existed... The Ultramarines have but one purpose... Protect humanity and act among them. Rated T for violence, death, and profanity. Read next chapter Author Notes for important news.

Salem is banished from her planet by the Twins. Stranded on the broken world of Terra. The despair shall fall on her.

Rebecca always wanted a whirlwind romance but when one came roaring her way, it seems that she wasn't as prepared as she thought she'd be.

This is a "What If" story that features the primarchs of 'Warhammer 40k' being reborn as girls with quirks in the world of 'Boku no Hero Academia'. Yes, really. Cross-posted at AO3.

Izuku is guided to an artifact of the horned god of the skaven. Through a surely sound deal with the god, Izuku will become a hero with his help. What could go wrong. (T for now)

Two figures out of their times wind up in the midst of a War for Survival their species and its strange sibling seemingly face on a daily basis. One, a being from Humanity's Golden Age, the Apex of Humanity and the other, born in a Dark Age left over by the collapse of peace and a Galaxy of Only War, both stuck together for the foreseeable future in this strange new world.

(Friendly to 40k Newbies) An assassin from the 41st millennium is thrown through time and space into a world of Gods and Giants. A world where ancient Roman and Greek heros do battle against giants, but how will a transhuman killing machine adapt to such conditions. With nothing but in his faith in the God Emperor, will he help these demigods or suffer not their heresy to live?

Following the conclusion of the War of the Thorns Azeroth is thrown into war while mysterious portals on mount Hyjal and in the Scarlet Monastery have allowed both the Horde and Alliance to make contact with another world. As the two warring sides increasingly involve this other world in their war the question looms if they are not poisoning their future for the sake of victory

In the not-so-distant future, armies of monsters have invaded Earth. Humanity was on the verge of annihilation by a relatively small enemy force as they began to understand the true scale of the war.

The Universe is complex. And so, many stories has to told to understand. Now, read these stories to better understand where we are.

A normal twenty-first century human mind stuck inside a Huragok, a Forerunner biobot, gets punted straight into the worst place anyone could ever be: Warhammer 40k. What is he to do but what he is made for? Beware all who call this horrid universe home, you will be 'halped'. First story on this site, updates every 2 weeks. I have up to chapter 11 already written.

Kucaba was exiled by her king. But she will find herself in a galaxy consumed with war. Where she will thrive.

The Orc Empire is losing the war and are losing millions of soldiers. The Orc Emperor and his wife enact a plan to restore the situation, aiming to create new Greenskins in two realities. HP/WFB/SW Crossover.

Momonga now an Necron overlord wake from the long slumber discovering the universe of the 41 millennium

Watch Fortress Edgehog has orbited a dead world for thousands of years, but as the world turns queer enough to sprout life and even a dragon-shaped continent, the Deathwatch finds they have new neighbors. (This is meant to be a silly and slow story. Don't expect violence porn. Do expect lots of puns and bad jokes.)

The Death Korps of Krieg are renowned across the Imperium for their fearlessness, unshakable willpower, and suicidal devotion to the Emperor. Cut off from their allies and abandoned on a previously undiscovered world, one lone Korpsman is challenged with the most daunting task any Krieger could face: Finding a reason to live.

After his last harrowing adventure and near death experience, Commissar Ciaphas Cain, HERO OF THE IMPERIUM, finds himself 'battling' untold hordes of greenskins that only Slaanesh could love from far beyond The Emperor's reach. Only the new allies he meets on this Emperor forsaken planet can help him escape in one piece and enjoy his retirement. May The Emperor have mercy on them.

Hey everyone, this is just something I wrote while bored and working of the next chapter of Priest of Machine and Magic. I know where i want to go with it, just a matter of knowing how to get there. I only have 2 chapters for this so it can be up for adoption once the second chapter is out in a week

The long war was over. but the forces of Chaos had not been the imperium's killer. it had been another the galaxy burned nothing was left except dust. As the clock finally struck twelve and the shadows lengthen. The light went out. but beyond all odds something survived that doomed future. To the world know by its inhabitants as Draconic Deus nothing would ever be the same. Very AU

The Emperor wasn't sure how he ended up in a different universe, or what the parasite leeching off Humanity was. But he was the guardian of Mankind, and there was at least one person on this world worthy of taking up his mantle.

It was the 29th Millennium. The Empire was born from one of the bloodiest wars ever witnessed by the galaxy, raise from the crumbling body of the human federation. Exist in perpetual utopia as the result of technological marvel the human had. Yet, there was a disturbance as a gate suddenly manifested on Terra.

The Avengers, Asgardians and The Guardians react to the Grim Darkness of Warhammer 40K. Pietro Maximoff lives, Frigga Lives, Bruce Banner doesn't go to Sakaar.

The sci-fi fantasy crossover to end all sci-fi fantasy crossovers. Star Wars? Got it! Warhammer? Yes we do! Halo? You bet! Dungeons and Dragons? Also on my list! Oh look, there’s also stuff from Mechwarrior, Transformers, Marvel Comics, Avatar, RWBY, and lots more! Time to combine all those universes into one!