Demo's family Moves to America, where they adopt a young soldier before he goes insane, A half-life crossover with alternate history elements, this is going to be interesting, ALSO, I'm looking for a co-author anyone interested?

Gordon Freeman, Alyx Vance, Barney Calhoun, and Adrian Shephard are transported to the world of My Hero Academia. What goofy and wacky shenanigans will they get into?

Nina, a prototype, ends up in the quarantine zone of city-17, just as Alyx arrives there as well. Takes place during Half-Life: Alyx. OC WARNING!

Ayita Shephard, Lambda Resistance; Cato'Zorah nar Rayya, hired Quarian of the Council Funded Relay 314 Expedition. Both dissatisfied with their lot in this universe; one under the heel of a Inter-Universal Empire, and the other under the boot of an Apathetic Galactic Council. Together they will change the Galaxy. (Image not Owned, Co-Written with IantheMechanic, First Contact AU)

Gordon arrives at City 17, but something is very much off... [COMPLETE]

Case #9992341 - Statement of Wayne Dalton, regarding his experience playing an experimental VR version of the game Half-Life. (a hlvrai/tma crossover. crossposted on ao3)

The characters are sent to an unknown theater to play Half-Life. Rated M for gore, swearing, and a testicle spider infestation

Doctor Strange ends up in an unfamiliar place with powerful cosmic beings. He soon learns that the nature of the multiverse is far greater than anyone can imagine.

Of Ratts and Men sequel. City 17 may be destroyed, but the Combine still reign supreme over Earth. Now, the Half-Life gang must find the Borealis so they can use its portal technology to find Alyx and finally beat the Combine. Luckily, three of the best candidates for the task have just rejoined the surface. Not so luckily, the Combine has found them first. See Ao3 for ch. updates!

A strange visitor visits the city of Columbia looking for new "employees".

Benrey goes on vacation while Dr Coomer deals with an angry wizard girl and a school full of entitled jerks. then a man in purple shows up, along with a mystery artist who knows the full history of Dr coomer and his team. Lousie starts questioning Dr Coomer, but Dr Coomer doesn't give a single care in the world. Just what did this man have to do with her?

Following the Black Mesa incident, Gordon Freeman successfully stops the Cascade using the satellite delivery rocket. Years later, Black Mesa is in the middle of an operation where they send agents to other worlds by using purposefully constructed Cascades. One such planet is 4546B, a planet on which they have almost no info. Unexpectedly, humanity finds itself determining fate.

Un fallo imprevisto en el teletransportador de White Forest, envía a Gordon Freeman al universo de Zootopia donde deberá arreglárselas para intentar escapar de la ciudad, sin embargo no lo tendrá nada fácil.

Free from G-Man's grasp and his name forgotten in time, Gordon sets out in The Borealis expecting death. Instead, he is sent to purgatory and made an offer, save another world and get a reward for it, basically. He can do it, after all, he is The Freeman. WARNING, Dumpster fire of a fanfiction and T for blood, violence and swearing.

It's hard for the Ethereals to invade when someone else got there first.

Salvation: Episode II - The Lair of the Shadow Broker - A slight re-imagining of the action packed Mass Effect 2 DLC. After defeating the Reaper threat and surviving the hijacking of the Carmenta Illustria, a dire message from one of Shepard's oldest and dearest friends plunges the team into a treacherous search for the mysterious Shadow Broker. But there are other forces at work..

The human race is a lost cause as far as GLaDOS is concerned, but there just might be one person worth her time.

(Set at the end of Half-Life 2) Gordon wasn't meant to be caught in the portal's blast. G-Man Hadn't planned for when he failed to catch him. Now Gordon is in a world not plagued by the combine, but by loneliness and pain. Will He set the Pilots and the rest of the world on a better path, lead by the Freeman? Redux Being Made, Please Check To Right The Wrongs Redux

The Combine are the lords of Earth. It has been nearly twenty years after their victory in the Seven Hour's War and those that survive live to suffer under their oppression. In a world utterly transformed for the worse, Miho Nishizumi along with her big sister just do what they can to get by. Yet for the younger Nishizumi, she will not tolerate the status quo.

(HLVRAI) Benry never shows up to Chuck E. Cheese. Tommy gets a text from him. Tommy goes missing. Coomer goes missing. Bubby goes missing. Gordon gets a text from the Science Team. (rated M for violence/gore/horror. eventually Frenry)

The Black Mesa Research Facility has always been on the cutting edge of scientific discovery. Unfortunately for them, one of their experiments goes too far, plunging the facility into an unprecedented disaster.

A team of Combine soldiers find themselves in Aperture Labs

a series of drabbles for an HLVRAI au, where they are in the world of Left 4 Dead. Will be compiled into a proper multi-chap eventually. (I'm sorry that I cannot find the hlvrai fandom, ill just have to post it here for now)

One particularly calm night over the land of Hyrule during a meteor shower, a portal tunneling in from another universe forms up in the skies. When the young hero returns to visit his childhood friend, Saria, she herself gets captured from an entirely new threat originating from the portal which Link must follow them through, into a world they don't understand...

A semi-crossover Male Reader!HEVSuitWearer X Samus Story. You are a BSL Station researcher assigned to analyze the X-Parasites in the Quarantine room. Sounds like a simple job, What could possibly go wrong? (May contain an annoying Male Reader Character) Originally posted on Deviantart. OneShot