In an unexpected and highly unlikely turn of events, a catastrophic warp breach from a crippled ship manages to fling a Rogue Trader - or rather, the youngest son of a Rogue Trader - through time and space to a universe quite unlike what anyone on-board in used to. They make the best of the situation.

A warrior makes her last stand. A grieving twin makes a desperate gamble to bring her sister back.

A very different Mass Effect galaxy encounters a strange and relentless invader that is on constant hunger for Biomass but they never know it's just a glimpse of what coming for them. Featuring: alternative history for every species, a bigger and more populated galaxy, cunning Asari, militarized and germanized human empire.

What if Kazuma laster a few more years before death took him? What if he was a giant 40k nerd when he met Aqua? What if Eris played Freebootas?

A hundred years passed since the beginning of the Indomitus Crusade. During the Liberation of the world of Vulgas Prime, one squad of Space Marines is hurled into an unknown world. Leading them is Brother-Sergeant Pleiades. Perpetual. Formerly known as Natsuki Subaru. He will bring the Emperor's light to this land. Yet the great enemy is never far behind. Let the Galaxy Burn!

In the year 2012 AD a magical accident on the Warhammer World changes the endless fighting forever. The Wasteland is ripped away through Spacetime and changes place with Earth s Germany. On both worlds, Earth and Warhammer, nothing will ever be the same.

Remnant is not as alone as it was once thought to be. The galaxy and all of its dangers have begun to close in. Starting with one of the unknown Primarchs crashing on the planet in his gestation capsule. Cinder discovers him and takes him under her wing. Everything RWBY knows is about to change as they are dragged into the never ending wars of the distant future.

'So this is how it ends huh' thought Summer as she lay broken on the ground, her beloved weapon lying next to her broken in 3 pieces. She tried to think of more, but she found that her mind was already leaving her as the cold embrace of death began to take her. 'NOT THIS TIME, SUMMER ROSE' a distorted voice said

Following the War of the Thorns and the Battles for Mordheim and Mount Hyjal several hundred Night Elf Sentinels and hundreds of Alliance Pioneers are trapped in the Empire. Knowing that the Horde had formed an Alliance with Enemies of the Empire, Shandris to save her home, and return successfully must convince them to a join a war they do not know yet that they have stakes in.

In the year of the Imperial Calendar 2510, the Daemon Prince Be'lakor subverts the destiny of a planet and, in doing so, inadvertently opened up a path to a new world: Azeroth, fresh from its victory over Archimonde and the Iron Horde.

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!

The Imperium teeters on the brink. Xeno and Heretic assail it from all sides. Traitor and Mutant seek its ruin from within. In the wake of the 13th Black Crusade, Abaddon unleashed insanity onto the Materium, but also something for Mankind in its darkest hour... hope. In this new Age of Darkness, there is only war and the laughter of thirsting gods. Hope is sorely needed. (AU)

Shirou Emiya from one of the bad endings, somehow managed to escape being dissolved by the grail and ends on warhammer 40k universe, during the unification wars, a new adventure begins.

Tanya in 30k as a Primark, (we're just having a good time here, having fun with the concept don't think too hard about it)

What happens when something the ancient warrior wizards put to rest is awoken by a set of situations meant to be the truly last resort to not only save their line but that of the universe? Ron bashing, New Dumbledore bashing and gratuitous amounts of violence and swearing this is harry potter as I imagined it you don't like it don't read it.

a primordial got bored and decided to show the fate of another world to those from a prime timeline.

A battle against the forces of Chaos strands a Necron lord in the galaxy of Mass Effect. With what's left of his dynasty under his banner, Veronakh Lord of Solvatakh intends to lead his people to glorious conquest. Can Commander Shepard stop the Collectors and curtail the ambitions of the Necrons?

Issei broken and filled with regrets is transported to a mysterious world. without his boosted gear, must face himself and the horror of this new world. Though he is not alone as Issei shall meet the Emperor's great creationists, his daughters. Equip with a power to rival creations itself. Issei hero of the Imperium and a hero to the broken. LONG LIVE ISSEI HERO OF MANKIND.

Isekai, Warp fuckery, and many more. Some guy gets fucked over in a deal, ROB's a prick like that.

From a world of swords and magic comes an aspiring necromancer. In this new world of dust and aura, a necromancer will have to create a place for himself. This is a tale of ambition, betrayal, delusion and corruption. This is a tale of bones and dust.

A Psi-titan of the Ordo Sinister finds it's way to Tokyo-3 after a warp incident. The second millennium will never be the same.

Two transcendent beings summon characters from the Multiverse to watch the darkest universe of them all: Warhammer 40k. "Forget the promise of progress and understanding, for in the grim dark future there is only war. There is no peace amongst the stars, only an eternity of carnage and slaughter, and the laughter of thirsting gods."

Long ago, Angels came to Remnant and brought with them enlightenment. They spread faith and hope across the world before returning to the stars. The people prospered under the faith, then came the Heretic King. Now the faith is outlawed, its members hunted as criminals, but hope remains. In hidden places, the faithful gather and pray to their God, awaiting the return of His Angels.

Due to circumstances neither side understands, the entirety of the SCP solar system has been transported to the 41st millennia. How will the Foundation deal with the grim dark future of the 41st millennia? How will the Imperium of Man deal with the new horrors at their doorstep?

Across the infinite multitudes of time, two universes collide in a bloody clash between the forces of Order and Chaos. No conflict is this between Light and Darkness, between Good and Evil for this a battle of utterly merciless annihilation.