Modified, brainwashed, and purged of his free will, Leader-Zero pledged an unyielding allegiance to the Universal Union, AKA the Combine, as a soldier to oppress the citizens of Earth. But everything changes when a mission goes awry, and a teleporter mishap permanently relocates him off world. Displaced and free from his shackles, will he rediscover life and his once lost humanity?

After bizarrely getting teleported into Final Fantasy 7, Gordon must team up with Cloud along with the science team to stop Sephiroth and his new found ally.

Dr. Cobalt Shepard has survived, Black Mesa is now nothing but a memory, but his job isn't over yet. Hired by The G-Man, he's given a job by the God of Darkness, to help free Remnant. But the Resonance Cascade had unseen consequences that are affecting Remnant. The Remains of the Xen Aliens invade, with the Combine following. The Right Man in The Wrong Place can make the Difference

Dr Freeman was given a new Job from his Benefactor after Alyx has things covered. His new assignment? Prevent a world from killing itself, and possibly fix a few other issues. (FreeBuki)

When Gordon Freeman accepted the G-Man's deal, he had never expected his next assignment to be placed in another world where humans were hunted down and eaten by giants while backstabbers and undermines plague what remains of humanity. All of it tendering on a world on the verge of collapse and ruin, but the right man in the wrong place can make all the difference in the world.

Ben and Max were two brothers living a peaceful life as farmers, until the combine invaded their world. As the chaos ensued, they became separated. They are willing to risk it all to reunite, despite the danger lurking around every corner. They must take drastic measures, even teaming up with a man in a suit to stand a chance, and ultimately protect their world from destruction.

The year is 192X and an unnamed American city's home to a cross-town rivalry, with each side under the guise of a name for scientific innovations. What began as a night out takes an unexpected turn as the right hands of both properly meet for the first time. [1920s AU. Also on AO3]

Adrian Shepard has escaped the G-man's prison that was an osprey in the void by going through the portal that the G-man used to leave the osprey. Elite combine 3650 was taken here with Wilson also. They find themselves on Eden Prime, hours before the attack close to the spaceport. Rated T, for now. This is a Passion Project, meaning an uploading schedule is almost nonexistent.

Gordon freeman PhD certainly never expected to sail a boat, on a heroic suicide cruse to save humanity, even less so ending up in in a whole new world, but here he is, and don't worry, he's a trained professional.

Since the Black Mesa Incident and Seven Hour War, the Combine became the undisputed masters of Earth and the remnants of Humanity lived in fear within dystopian cityscapes. The few who live beyond the borders of the decaying cities are the Resistance, a small, almost harmless group to the War Machine of the Combine. That is all set to change, as new variables come to assist mankind

After the events of Half-life episode 2, Gordon is left to wonder what to do next and Doctor Kliner has the answer for him. It will take him to strange new dimensions in meeting interesting people to warn of the Combine threat, the real question remains is he already too late?

the origins of bodenebas...

Alyx Vance finds herself on a multiverse adventure! On a new planet in a new body, she must work with the local Freedom Fighters to stop Robotnik! She makes friends with a twin tailed fox who helps her escape Robotropolis, she finds refuge in Knothole Village! Multi POV story at this point. Valve multiverse & Sonic SatAM/IDW comic AU. No sexually explicit content. HL-Alyx spoilers

After the events of the Black Mesa Incident, Adrian Shephard finds himself hired by the mysterious G-man to change the course of history in another world. Surely, he can survive against the odds as he has done before, besides what are superpowers to a trained marine anyway?

Some call it destiny, others call it coincidence. To Weiss Schnee it was a pain in the ass. She never expected to be fighting for survival in an alien dimension alongside a stoic Doctor clad in orange. The man in the suit only complicates things further. One question lies in her mind... "How do I get home?" Art by: NecroCephalopod on DeviantArt go give him some support.

The Combine have lost Earth, but don't take it seriously as they're BIG. They set off to find a new universe, Lukas Becker, a former Civil Protection officer finds another Earth, and sets off to attempt to make contact with the humans inhabiting this Earth. Then a lot of other events start to occur.

Something in life guides everyone. Sometimes it's people, sometimes it's the choices that are made. Chell is on the surface and finds the world is a much different place than the depths of Aperture. Gordon and Alyx are trying to fulfill Eli's dying last wish but that's easier said than done. While at White Forest Barney Calhoun just tries to keep everything from falling apart.

(half-life x re:zero crossover) My take on Re:Zero, but Subaru along with Gordon Freeman are summoned to the parallel world, each through different means. Freeman and Subaru form an alliance to survive in this new world, adventure awaits this pair!

The Science Team absolutely, completely, 100% do not get lost in a creepy forest. [HLVRAI and Naruto Crossover]

After a ferocious journey through the halls of Black Mesa and the arduous ecosystems of the Xen, Adrian Shephard is once more deployed to save someone. A girl. He doesn't know why, but if it guarantees his life, he's willing to get the job done.

(Hiatus) (Being Rewritten/Edited) Deals are made for the one known as Gordon Freeman, yet the one who accepts such deals is none other than the mysterious man himself. When the time comes to accept a job from a dear "Business Partner", there is none other than the one Freeman to do it.

Taking place after the events of Opposing Force, Adrian Shepherd is saved at the last minute by the enigmatic G-man, and is granted a new lease on life. Spirited away as a teenager in Remnant, he is tasked with protecting the world from a dark and primordial evil that threatens to tear the world apart. Sounds easy enough? Well, not exactly...

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!