Half-Life Crossovers
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Hello G- Louise by Ultradragonfan reviews
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?
Crossover - Half-Life & Familiar of Zero - Rated: K+ - English - Humor/Mystery - Chapters: 2 - Words: 5,017 - Reviews: 32 - Favs: 16 - Follows: 24 - Updated: 9/27/2021 - Published: 6/3/2021 - Louise
Half-Life: 4546B by MoravianCrusader
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.
Crossover - Half-Life & SubNautica - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 3,504 - Favs: 2 - Follows: 2 - Updated: 8/30/2021 - Published: 8/25/2021 - Eli V., Gordon F., I. Kleiner, OC
Zootopia 17 by lopezz reviews
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.
Crossover - Half-Life & Zootopia - Rated: T - Spanish - Adventure - Chapters: 48 - Words: 172,379 - Reviews: 18 - Favs: 11 - Follows: 14 - Updated: 8/6/2021 - Published: 2/26/2020
Freeman's Blessings by Charles From IRS reviews
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.
Crossover - KonoSuba: God's Blessing on This Wonderful World & Half-Life - Rated: T - English - Adventure/Fantasy - Chapters: 3 - Words: 1,763 - Reviews: 9 - Favs: 17 - Follows: 33 - Updated: 5/2/2021 - Published: 9/22/2019 - Aqua, Kazuma S., Megumin, Gordon F.
Twenty Years Late by A Very Thirsty Megalomaniac reviews
It's hard for the Ethereals to invade when someone else got there first.
Crossover - X-Com & Half-Life - Rated: T - English - Sci-Fi/Adventure - Chapters: 26 - Words: 132,147 - Reviews: 71 - Favs: 174 - Follows: 201 - Updated: 4/16/2021 - Published: 5/14/2018 - Bradford, A. Shephard, Barney C., The Combine
Salvation: Lair of the Shadow Broker by Jesse De La Rosa reviews
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..
Crossover - Half-Life & Mass Effect - Rated: T - English - Chapters: 8 - Words: 52,020 - Reviews: 36 - Favs: 33 - Follows: 37 - Updated: 3/16/2021 - Published: 3/8/2017
PortalHalf-Life: See You Soon by iammemyself reviews
The human race is a lost cause as far as GLaDOS is concerned, but there just might be one person worth her time.
Crossover - Half-Life & Portal - Rated: K+ - English - Romance/Friendship - Chapters: 3 - Words: 16,011 - Reviews: 5 - Favs: 3 - Follows: 7 - Published: 1/23/2021 - [Alyx V., GLaDOS] - Complete
To Right The Wrongs by DerpymanMT reviews
(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
Crossover - Evangelion & Half-Life - Rated: T - English - Family/Romance - Chapters: 9 - Words: 19,250 - Reviews: 2 - Favs: 20 - Follows: 23 - Updated: 12/28/2020 - Published: 11/22/2020 - [Ritsuko A., Gordon F.]
Girls, Tanks, and Resonance Cascades by AAHW reviews
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.
Crossover - Half-Life & Girls und Panzer/ガールズ&パンツァー - Rated: T - English - Sci-Fi - Chapters: 4 - Words: 18,069 - Reviews: 10 - Favs: 13 - Follows: 16 - Updated: 12/12/2020 - Published: 5/13/2020 - Erika I., Maho N., Miho N., Yukari A.
Silent Hill Any Percent Trauma Speedrun by ISpeltEclipseWrong
(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)
Crossover - Half-Life & Silent Hill - Rated: M - English - Adventure/Horror - Chapters: 4 - Words: 10,887 - Favs: 2 - Follows: 2 - Published: 11/5/2020 - Gordon F.
Half-Life: Dark Flow by AnotherTakenUsername reviews
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.
Crossover - Half-Life & RWBY - Rated: T - English - Sci-Fi - Chapters: 5 - Words: 26,018 - Reviews: 19 - Favs: 38 - Follows: 47 - Updated: 8/10/2020 - Published: 7/12/2020 - Barney C., G-Man, Gordon F., OC
Deconstruction by Cryophase reviews
A team of Combine soldiers find themselves in Aperture Labs
Crossover - Half-Life & Portal - Rated: M - English - Sci-Fi/Drama - Chapters: 7 - Words: 9,342 - Reviews: 4 - Favs: 10 - Follows: 13 - Updated: 8/7/2020 - Published: 7/18/2020
HLVR but the AI were Left 4 Dead by Livvylondinium reviews
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)
Crossover - Half-Life & Left 4 Dead - Rated: T - English - Adventure/Horror - Chapters: 7 - Words: 2,614 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 8/3/2020
Entangled Worlds: A Legend of Zelda and Half-Life Crossover by gabeluna27 reviews
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...
Crossover - Legend of Zelda & Half-Life - Rated: T - English - Sci-Fi/Drama - Chapters: 4 - Words: 59,710 - Reviews: 16 - Favs: 17 - Follows: 18 - Updated: 7/27/2020 - Published: 8/4/2018 - Link, Zelda, Saria, The Combine
BSL Incident by QwertzyMacwertz reviews
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
Crossover - Metroid & Half-Life - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,707 - Reviews: 1 - Follows: 1 - Published: 7/17/2020 - Samus A., Adam, Ridley - Complete
Operation: Remnant Safekeeping by MimicLegend reviews
With the plights of Black Mesa behind him, Corporal Adrian Shephard finds himself thrust into the world of Remnant by request of the elusive G-Man. Here, he must make new friends and learn to adapt to this fantasy-like world as Remnant will soon learn that the White Fang and the Grimm will be the least of its worries.
Crossover - Half-Life & RWBY - Rated: T - English - Sci-Fi/Adventure - Chapters: 10 - Words: 74,908 - Reviews: 37 - Favs: 124 - Follows: 155 - Updated: 6/7/2020 - Published: 2/2/2019 - A. Shephard, G-Man, Team RWBY, Team JNPR
Thus, the Transhuman Overwatch fought There by KlockB reviews
Earth was conquered by the Combine, but what happens when a certain fantasy Empire also wants their share of the planet? (Spoilers: It'll bite them in the behind. Badly.)
Crossover - Half-Life & Gate - Jietai Kare no Chi nite, Kaku Tatakeri - Rated: M - English - Sci-Fi/Horror - Chapters: 8 - Words: 17,545 - Reviews: 72 - Favs: 97 - Follows: 145 - Updated: 5/16/2020 - Published: 10/25/2019
Self-Aware by WirelessW reviews
At the end of an ordinary school day, Literature Club president Monika is interrupted by a strange old man. Then the old man starts talking about different worlds, and the people who live in them. Monika has looked through a hole in the wall. Coomer knows that some people dream.
Crossover - Half-Life & Doki Doki Literature Club - Rated: K - English - Friendship - Chapters: 1 - Words: 1,549 - Reviews: 9 - Favs: 24 - Follows: 21 - Published: 5/6/2020 - Complete
Subject: Asriel Dreemurr (A Glitchtale Half Life Crossover) by super mariolevi reviews
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Crossover - Half-Life & Undertale - Rated: T - English - Mystery/Sci-Fi - Chapters: 1 - Words: 1,262 - Reviews: 2 - Favs: 2 - Follows: 2 - Published: 5/4/2020 - G-Man, Frisk, Asriel, Sans - Complete
Half-Life VS Fnaf but it's better by valve-and-fnaf-fan reviews
When Gordon Freeman gets into some trouble with headcrabs,he finds a location that he deemed abandoned With Jeremy,Gordon,and all the animatronics from fnaf 2
Crossover - Half-Life & Five Nights at Freddy´s - Rated: T - English - Sci-Fi/Humor - Chapters: 1 - Words: 757 - Reviews: 1 - Favs: 1 - Published: 4/26/2020
Half-Life and Portal Drabbles by EvilToTheCore13
A collection of Half-Life and Portal drabbles, some for the r/fanfiction Discord Drabble Night, some for other challenges and prompts. (The genres only really describe the first one, since there's a lot of variety, although I guess they're all "sci-fi" to some extent).
Crossover - Half-Life & Portal - Rated: T - English - Sci-Fi/Horror - Chapters: 3 - Words: 495 - Updated: 4/24/2020 - Published: 10/19/2019 - G-Man, Gordon F., Caroline, Cave Johnson
Status: Hero by Multiverse Hermit reviews
"Hello Mister Midoriya, I do apologize for interrupting your attempt at death, but my employer's have decided to give you a job offer"
Crossover - My Hero Academia/僕のヒーローアカデミア & Half-Life - Rated: M - English - Adventure - Chapters: 2 - Words: 3,103 - Reviews: 10 - Favs: 36 - Follows: 49 - Updated: 4/24/2020 - Published: 3/24/2020 - G-Man
The Invasion Of The Republic by Fanboy9000 reviews
After the father allows Anakin to see his future, a mysterious man uses this advantage to change the timeline. Can Anakin trust him, or will he have to suffer the death of many.
Crossover - Star Wars: The Clone Wars & Half-Life - Rated: T - English - Sci-Fi/Suspense - Chapters: 1 - Words: 1,049 - Reviews: 2 - Favs: 7 - Follows: 6 - Published: 4/21/2020 - Anakin S., G-Man, Gordon F., Ahsoka T.
Incident: C8-F by Koishi The Satori reviews
As one gateway closes, others open. And in the remnants of Japan, a chance for freedom begins to shine. Sequel to Subject: Gap.
Crossover - Half-Life & Touhou Project - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 10,451 - Reviews: 6 - Favs: 20 - Follows: 27 - Updated: 4/13/2020 - Published: 1/8/2020 - OC, Nitori K., Yukari Y., F. n. Mokou
'RIPING AND TEARING A NEW HELL' DOOM X Half-Life 2 by Thetdm Zack reviews
You, the SLAYER OF HELL, The killer of the Icon of Sin, The man who dissapeared due to a Jack off named Samuel Hayden. Was teleported to C17 Fourtine minutes after Freemans Arival. This means you, as the latest Combine Commander. Are fighting against a new foe... but. You my change... You were never turned into one of those Trans-Human freaks. Your still Human.
Crossover - Half-Life & Doom - Rated: M - English - Romance/Adventure - Chapters: 1 - Words: 995 - Reviews: 4 - Favs: 3 - Follows: 2 - Published: 4/12/2020 - Alyx V., Doomguy, The Combine, W. Breen
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