Portal Crossovers
Filters
558 | « Prev Page 1 2 3 4 5 12 .. Last Next »

Club Bitter Pizza by Lenticel
Ennard had the right idea but poor execution. What FNAF animatronics really need to escape their little hell is to do something like what Glitchtrap managed: outright possession. Iris is a normal young woman a lot like me. That is, until the night she begins receiving dream visits from Freddy Fazbear himself.
Crossover - Portal & Five Nights at Freddy´s - Rated: T - English - Hurt/Comfort/Friendship - Chapters: 4 - Words: 11,264 - Favs: 1 - Follows: 1 - Updated: 9/6/2021 - Published: 8/22/2021 - GLaDOS, Freddy Fazbear, Foxy
PAW Patrol: Still Alive - CANCELLED by HeyItzRare reviews
The PAW Patrol has found someone that will change their lives forever: Wheatley! PLEASE NOTE: This is an abandoned story. I won't be updating it.
Crossover - Portal & PAW Patrol - Rated: K - English - Adventure - Chapters: 3 - Words: 371 - Reviews: 11 - Favs: 4 - Follows: 3 - Updated: 8/25/2021 - Published: 2/23/2015 - Complete
Into the Fire by cmpmatthews reviews
When the Doctor and Donna land in the Enrichment Center of Aperture Science after 30 years of silence, they decide to explore. Little do they know that they are about to be tested to the max by a lonely, bored AI that had been dormant for 30 years prior.
Crossover - Doctor Who & Portal - Rated: T - English - Sci-Fi/Adventure - Chapters: 15 - Words: 19,883 - Reviews: 16 - Favs: 19 - Follows: 28 - Updated: 7/23/2021 - Published: 11/26/2013 - 10th Doctor, Donna N., Chell, GLaDOS - Complete
Wheatley meets One-One by Scythe Asgore
Exactly what it says on the title. Wheatley ends up on the Infinity train and meets One-One. Cross posted on AO3
Crossover - Portal & Infinity Train - Rated: K - English - Chapters: 1 - Words: 1,918 - Favs: 4 - Published: 5/27/2021 - Chell, Wheatley, Space Core, One-One - Complete
Now You're Thinking with Real Science by Jaywings reviews
A former test subject, now free, takes up residence in a strange town where almost nothing is considered abnormal. A year later, a young paranormal enthusiast spots two odd new satellites orbiting the moon and immediately makes plans to bring them to Earth, firmly believing that the two metal spheres are alien in origin. Because, after all, what else could they possibly be?
Crossover - Invader Zim & Portal - Rated: T - English - Adventure/Friendship - Chapters: 27 - Words: 211,810 - Reviews: 146 - Favs: 199 - Follows: 217 - Updated: 4/14/2021 - Published: 8/6/2013 - Zim, Dib, GLaDOS, Wheatley
PortalBorderlands: Any Port in a Storm by iammemyself reviews
Claptrap had only planned on hanging out with this Wheatley guy long enough to drop him off with somebody who could get him back home, but an emergency stop in a place with only one charging outlet put a major snag into THAT plan… [There Was Only One Bed but with robots]
Crossover - Portal & Borderlands - Rated: K - English - Friendship - Chapters: 1 - Words: 3,585 - Reviews: 1 - Favs: 2 - Published: 3/5/2021 - [Wheatley, Claptrap] - Complete
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: 5 - Follows: 9 - Published: 1/23/2021 - [Alyx V., GLaDOS] - Complete
The Things We Do For Science by Dr. Kineil D. Wicks reviews
Cooperative testing is supposed to bring people together through science. Cake is often a good motivator, but escaping a madhouse that tries to pass itself off as a science facility works better. Will they escape? Or will the facility keep them clutched in its iron grasp forever?...
Crossover - Portal & Don't Starve - Rated: T - English - Adventure - Chapters: 70 - Words: 82,191 - Reviews: 26 - Favs: 17 - Follows: 19 - Updated: 12/18/2020 - Published: 5/5/2015 - Maxwell/William C., Wilson H., Willow - Complete
MLP: Portal Experiment by V.I.S.I.O.N-K.I.N.G
Equestria becomes the next Test Subject within the Aperture Science Facility, run by the Central Core: GLaDOS. Unaware where it came from, everyone is rendered around Earth Pony level, & the Mane Six group must overcome the Test Chambers to reach the goal & save everyone else captured. To escape the Test Facility, they'll need help from a new mute friend without a past: Chell.
Crossover - My Little Pony & Portal - Rated: T - English - Adventure/Suspense - Chapters: 6 - Words: 64,520 - Favs: 3 - Follows: 4 - Published: 12/16/2020 - Complete
When Life Gives You Lemons by Baked The Author reviews
The last thing I remember is being trapped in the locker; now I'm in some kind of filthy, abandoned research facility, one that's clearly never heard of OSHA or the Geneva Convention. How did I get down here? Am I alone? Most importantly… how do I get out? Maybe I should make something… Tinker!Taylor, sane!GLaDOS
Crossover - Portal & Worm - Rated: T - English - Adventure/Mystery - Chapters: 12 - Words: 77,208 - Reviews: 428 - Favs: 2,579 - Follows: 2,240 - Updated: 8/24/2020 - Published: 8/23/2019 - GLaDOS, Skitter - Complete
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: 14 - Updated: 8/7/2020 - Published: 7/18/2020
PortalBorderlands: Assigned Permanent Companionship Units by iammemyself
Every robot manufactured in Claptrap's universe gets an assigned permanent companionship unit and, despite all signs to the contrary, he has one too. Unfortunately, not only is she a piece of work he doesn't want to spend two minutes with, much less forever, she lives in an entirely different universe. One that doesn't HAVE soulmates... (Soulmate AU)
Crossover - Portal & Borderlands - Rated: T - English - Humor/Romance - Chapters: 1 - Words: 13,055 - Favs: 6 - Follows: 5 - Published: 5/27/2020 - [GLaDOS, Claptrap] - Complete
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
PortalBorderlands: The Girlfriend by iammemyself reviews
Having a girlfriend is REALLY hard, but it's also way more awesome than he'd thought it was going to be. This story is NOT CRACK. It's a serious Claptrap X GLaDOS story. For real.
Crossover - Portal & Borderlands - Rated: K - English - Romance/Friendship - Chapters: 6 - Words: 20,719 - Reviews: 8 - Favs: 41 - Follows: 39 - Updated: 4/14/2020 - Published: 10/24/2018 - [GLaDOS, Claptrap] - Complete
Finally Human (A Portal Fanfiction) RETURNING by Morgan64 reviews
What would happen if Wheatley and GLaDoS were finally human?
Crossover - Half-Life & Portal - Rated: T - English - Sci-Fi/Mystery - Chapters: 5 - Words: 1,809 - Reviews: 1 - Favs: 7 - Follows: 5 - Updated: 3/12/2020 - Published: 12/2/2015 - GLaDOS, Wheatley
business partnership by crawfy reviews
Short story of a man who learned what happens to people who cannot repay their debt to Teiai even if they would work their whole life.
Crossover - Portal & Kaiji - Rated: K - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,029 - Reviews: 2 - Favs: 1 - Follows: 1 - Published: 1/19/2020
Think in Ponies by Silver Arctic Wolf reviews
Trouble at the Aperhoof Science Enrichment Center: personality sphere Spike needs to find somepony to test the portal gun, or he's in big trouble. But due to some errors, all the test subjects in cryosleep are in no fit state for doing anything. Luckily for Spike, he's got one pony left who has a great testing record.
Crossover - My Little Pony & Portal - Rated: T - English - Parody/Adventure - Chapters: 6 - Words: 15,547 - Reviews: 1 - Favs: 1 - Follows: 1 - Updated: 10/28/2019 - Published: 10/2/2019 - Twilight Sparkle, Fluttershy, Spike - Complete
Alien Isolation: Portal Edition by wysha.thorne reviews
Amanda on Sevastopol with a portal gun, everybody's favourite sarcastic core guiding her, the xenomorph, working joes, and... SEARCH MODE ACTIVATED (yep, those pesky little sods. Also based on a dream I had prior to writing It Takes Two.
Crossover - Portal & Alien: Isolation - Rated: M - English - Sci-Fi/Humor - Chapters: 1 - Words: 904 - Reviews: 1 - Favs: 1 - Follows: 3 - Published: 10/15/2019
Alien Isolation: Portal Edition by wysha.thorne reviews
Amanda on Sevastopol with a portal gun, everybody's favourite sarcastic core guiding her, the xenomorph, working joes, and... SEARCH MODE ACTIVATED (yep, those pesky little sods. Also based on a dream I had prior to writing It Takes Two.
Crossover - Portal & Alien: Isolation - Rated: M - English - Sci-Fi/Horror - Chapters: 1 - Words: 904 - Reviews: 2 - Follows: 1 - Published: 10/14/2019
Test Protocol by Celtic Knot reviews
The Illusive Man sends Shepard to investigate a missing Cerberus cell. Her team becomes trapped in the facility and must outwit a hostile AI in order to escape. But when they finally get back to the Normandy, they find the ordeal is far from over...
Crossover - Mass Effect & Portal - Rated: T - English - Drama/Humor - Chapters: 2 - Words: 6,546 - Reviews: 5 - Favs: 20 - Follows: 33 - Updated: 10/2/2019 - Published: 9/2/2019 - [J. Garson, Thane K.] EDI, GLaDOS
Two Ships by csvolny
What would happen if the Half-Life protagonist were to meet the Portal protagonist? In the broken streets of downtown City 17, this is what happened. Rated T, for violence.
Crossover - Half-Life & Portal - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 1 - Words: 5,315 - Favs: 8 - Follows: 5 - Published: 9/9/2019 - Gordon F., Chell - Complete
The Before and After by CurlyFriDays reviews
Wheatley remembers his before. His humaness. An Epilogue of sorts to The Threat Underground
Crossover - Turing Test & Portal - Rated: K - English - Adventure/Sci-Fi - Chapters: 2 - Words: 731 - Reviews: 1 - Favs: 1 - Follows: 1 - Published: 9/8/2019 - Complete
The Threat Underground by CurlyFriDays reviews
GLaDOS lurks underground near a growing city, only a few know the true threat she is. Our main crew will have to delve into their own memories and venture underground to defeat GLaDOS. The sequel to The Curse Of The Cure
Crossover - Turing Test & Portal - Rated: K+ - English - Sci-Fi/Friendship - Chapters: 5 - Words: 3,560 - Reviews: 5 - Published: 9/8/2019 - Complete
Becoming Whole by CurlyFriDays reviews
Chell has finally been released from Aperture. But the world she left is not the same as the one she's entering. Chell meets up with Lieutenant Hank Anderson and newly deviant Connor. What happens when they all meet? Antics, chaos, and pranks. That's what. Eventual family relations
Crossover - Portal & Detroit: Become Human - Rated: K+ - English - Humor/Sci-Fi - Chapters: 11 - Words: 8,015 - Reviews: 12 - Favs: 7 - Follows: 6 - Updated: 8/17/2019 - Published: 7/29/2019
The Curse Of The Cure by CurlyFriDays reviews
We always knew humanity would end, we just never thought the apocalypse would be brought on by humans.
Crossover - Turing Test & Portal - Rated: K+ - English - Sci-Fi/Adventure - Chapters: 8 - Words: 6,757 - Reviews: 6 - Favs: 1 - Updated: 7/19/2019 - Published: 5/19/2019 - Complete
558 | « Prev Page 1 2 3 4 5 12 .. Last Next »