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Aperture Plainsburo by thegamerdude256 reviews
After a strange set of circumstances, Gregory House finds himself in Aperture Science. What will happen GLaDOS is activated. Can House heat all of the tests, before his sarcasm makes GLaDOS kill him herself.
Crossover - House, M.D. & Portal - Rated: T - English - Adventure/Humor - Chapters: 2 - Words: 3,979 - Reviews: 1 - Follows: 2 - Updated: 3/22 - Published: 1/9
Is Your Great-Aunt an AI? ! by Quatermass reviews
Petunia sends a baby Harry to her aunt, living in America, Caroline Evans. Some years later, Caroline becomes GLaDOS, and only Harry stops her from her rampage. Now, Harry is eleven, and he's heading to Hogwarts. Of course, with an amoral scientist/computer for a great-aunt and a mute big sister, the question is not whether he is ready for Hogwarts. Is Hogwarts ready for him?
Crossover - Harry Potter & Portal - Rated: T - English - Humor/Fantasy - Chapters: 19 - Words: 47,708 - Reviews: 323 - Favs: 1,462 - Follows: 1,402 - Updated: 3/13 - Published: 10/18/2015 - [Harry P., Hermione G.] Chell, GLaDOS - Complete
Just How Can a Computer Do Magic? ! by Quatermass reviews
("Is Your Great-Aunt an AI!" sequel) GLaDOS has learned how to do magic, and is going to be teaching at Hogwarts. And it's just as well, for a plot is afoot to cause trouble at Hogwarts. Can a genius, if insane, computer and her great-nephew Harry stop things from spiralling out of control? Or will the beast of the Chamber of Secrets thwart even GLaDOS and Harry?
Crossover - Harry Potter & Portal - Rated: T - English - Humor/Fantasy - Chapters: 3 - Words: 6,909 - Reviews: 31 - Favs: 437 - Follows: 545 - Published: 3/13 - [Harry P., Hermione G.] Chell, GLaDOS
For the Good of all of us by High Sage Kahlen
Chell and Glados find more than Caroline in Aperture, and Snow is on a rampage for ways to publicly kill Katniss. Will either of them survive?
Crossover - Portal & Hunger Games - Rated: T - English - Family/Adventure - Chapters: 1 - Words: 845 - Published: 3/9
Times Change by Periwinklerene reviews
Three years after Portal 2, the Doctor finds Wheatley desperate and dying and tries to help him by taking him back to Aperture to fix him. Something goes wrong, and slowly the two find that they're at the center of something much, much bigger than themselves. (Updates on this story are available on my profile page)
Crossover - Doctor Who & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 13,995 - Reviews: 13 - Favs: 13 - Follows: 28 - Updated: 2/26 - Published: 10/10/2016 - 10th Doctor, Chell, GLaDOS, Wheatley
When life gives you lemons, make Star blow them up! by The Cowardly Christian reviews
What if the day Star showed up...a teen Cave Johnson showed up! Science V.S. Magic! Who will survive?
Crossover - Portal & Star Vs. The Forces of Evil - Rated: T - English - Supernatural/Sci-Fi - Chapters: 1 - Words: 312 - Reviews: 2 - Favs: 2 - Follows: 2 - Published: 2/23 - [Star B., Marco D.] Cave Johnson
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: 22 - Words: 155,689 - Reviews: 115 - Favs: 93 - Follows: 107 - Updated: 2/22 - Published: 8/6/2013 - Dib, Zim, Wheatley, GLaDOS
Half Life : A Path Divided by discet04 reviews
What if Chell had managed to fight off the party escort box after her showdown with GLaDOS. Freed from the Enrichment Center to explore the world beyond, for better or worse. "Things have changed since the last time you left the building. What's going on out there will make you wish you were back in here..."
Crossover - Half-Life & Portal - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 2 - Words: 16,093 - Reviews: 3 - Favs: 4 - Follows: 6 - Updated: 2/13 - Published: 1/19 - Alyx V., Chell, D. Rattmann
Cave Johnson: The making of a hero by The Cowardly Christian
the Gravity Falls gang do a documentary; explaining how a simple 12 year old was rescued from an underground cult, came into their lives...horribly injured Mable, burnt down the town several times...and saved them all... 12-year old! Cave
Crossover - Portal & Gravity Falls - Rated: T - English - Supernatural/Sci-Fi - Chapters: 1 - Words: 469 - Favs: 2 - Follows: 1 - Published: 2/10 - [Cave Johnson, Mabel P.] [Dipper P., Wendy]
Nuclear Winter (GLaDley Fallout AU oneshot) by TheJinxedJailer
The other day my friend told me to make an apocalypse AU specifically for GLaDley. I complied, turned it into a Fallout crossover, and got in over my head. What you need to know is that Aperture is a synth colony in northern Michigan, Gladys is the leader, Wheatley is the muscle, and everybody else gets in the way.
Crossover - Fallout & Portal - Rated: K+ - English - Romance/Sci-Fi - Chapters: 1 - Words: 2,936 - Published: 2/9 - DiMA, Cave Johnson, GLaDOS, Wheatley - Complete
Portalborn by Experiment 282 reviews
In the land of Skyrim, the Dragonborn is a hot-blooded thrill seeker. An encounter with a weird man and a talking meteorite ball thing that rambles about space sets her off on something weird indeed...
Crossover - Elder Scroll series & Portal - Rated: T - English - Adventure/Humor - Chapters: 63 - Words: 389,387 - Reviews: 75 - Favs: 86 - Follows: 76 - Updated: 2/6 - Published: 2/17/2012 - Dragonborn/Dovahkiin, D. Rattmann, Wheatley, Chell
Folie à Aperture by Le Cookie Ninja
Premier gros projet, merci d'être indulgent et tout le reste. Bref. Cave Johnson est en fin de vie et est en pleine banqueroute mais veut toujours tester. En lisant le journal, il découvre le Joker et décide de le ramener à Aperture ainsi que ses acolytes pour pouvoir leurs faire passer des tests. Après la chute d'Aperture causée par GLaDOS, le Joker se réveille.
Crossover - Batman & Portal - Rated: T - French - Sci-Fi - Chapters: 1 - Words: 462 - Published: 1/29 - The Joker
Blue alert by TitanMoose666
Simple crossover, introduces an OC that will be in my stories to come. Sansby shipping.
Crossover - Portal & Undertale - Rated: T - English - Sci-Fi/Humor - Chapters: 2 - Words: 623 - Updated: 1/26 - Published: 1/19 - Chell, GLaDOS, OC, Sans
Robots Also Fear by ghostwalker13
There's a left-behind place: no-one knows what goes on. P-Body and Atlas are sent to explore the 'ruins' of what used to be a 'restaurant/storage facility' for these 'other robots'. Whatever is down there, it isn't too happy to be seeing new faces.
Crossover - Portal & Five Nights at Freddy´s - Rated: T - English - Adventure/Horror - Chapters: 5 - Words: 2,436 - Favs: 3 - Follows: 4 - Updated: 1/23 - Published: 10/19/2016
Mann to the Core by yodapopper reviews
Wheatley does a bit of a rough landing in 2Fort, providing some much-needed change in an eternal war between brothers. But can Wheatley -and the mercenaries- adapt to the changes, or will things take a turn for the worse? No humanisations. (The TF2-verse is AU in one vital aspect: Gray Mann never happened, which means that all connected events (such as MvM) haven't occured either)
Crossover - Portal & Team Fortress 2 - Rated: T - English - Adventure/Friendship - Chapters: 15 - Words: 35,292 - Reviews: 41 - Favs: 30 - Follows: 40 - Updated: 1/18 - Published: 6/4/2014 - Wheatley, Engineer
Portal Tale by UndertalePortalFan
After Wheatley betrays Chell, GLaDOS and her must escape
Crossover - Portal & Undertale - Rated: K+ - English - Adventure/Sci-Fi - Chapters: 1 - Words: 306 - Favs: 1 - Published: 1/16 - Chell, GLaDOS, Flowey
Shame and Nostalgia: An Overview of Portal Time by Max80-7
Humbled by years of disdain for the beast he created, ex-fanfic writer Max80-7 returns to challenge the apocalyptic legacy of the Portal Time series...yeah, I wish it was that epic. Really, I just tear one of my old fanfics to shreds for shits and giggles! Trust me, I can't burn this garbage alone...
Crossover - Portal & Adventure Time with Finn and Jake - Rated: T - English - Chapters: 1 - Words: 2,394 - Published: 1/14 - Complete
Tom Riddle et le Tunnel Quantique by Flametusk
Quelque chose que j'ai créé pour une projet dans mon classe de Français. Something I made for a project in my French class.
Crossover - Harry Potter & Portal - Rated: T - English - Chapters: 1 - Words: 1,016 - Published: 1/8 - Complete
videogame court by ai the play-guy
in this court anything can and will go wrong
Crossover - Mario & Portal - Rated: T - English - Humor/Crime - Chapters: 1 - Words: 621 - Published: 12/29/2016 - GLaDOS, Wheatley, Turret
A Portal In Time by legoagentny reviews
When Tracer wakes up in a strange room in Apeture, she wonders how she got there and how to get out. With the help of a mysterious scientist and an orange robot named Virgil, she sets off to find a way out of the dangerous facility.
Crossover - Portal & Overwatch - Rated: K+ - English - Mystery/Sci-Fi - Chapters: 4 - Words: 2,651 - Reviews: 3 - Favs: 5 - Follows: 11 - Updated: 12/13/2016 - Published: 7/12/2016
Beyond Science: Pandora's Box by Alexandroid99
Doug Rattman finds himself waking up after going into cryogenic sleep after the events of the comic. His leg injured, he sets off to continue surviving and to find out what happened in the meantime. In a different time, Gordon Freeman survives a traincrash with Alyx and witnesses the explosion of the Citadel ruins, which marks the arrival of a blue box as the Vortigaunts made sure.
Crossover - Doctor Who & Portal - Rated: K - English - Sci-Fi - Chapters: 3 - Words: 2,366 - Follows: 3 - Updated: 11/27/2016 - Published: 2/6/2016 - 11th Doctor, D. Rattmann, GLaDOS, Weighted Companion Cube
Two Rats in a Maze by DarthJosef reviews
Chell is surprised when a man in a blue box appears in a test chamber at Aperture Laboratories
Crossover - Doctor Who & Portal - Rated: K - English - Sci-Fi/Adventure - Chapters: 5 - Words: 7,278 - Reviews: 24 - Favs: 40 - Follows: 46 - Updated: 11/26/2016 - Published: 3/20/2013 - Chell, GLaDOS - Complete
Portals fill you with Determination by Personality Construct reviews
Sans is aware. He knows about the resets, and can travel through his 'short-cuts' to many places in Undertale. And one day, to Aperture Science.
Crossover - Portal & Undertale - Rated: K - English - Humor - Chapters: 14 - Words: 13,406 - Reviews: 17 - Favs: 31 - Follows: 37 - Updated: 11/15/2016 - Published: 5/2/2016 - Chell, Wheatley, Sans
Minecraft vs Portal 1! by joshman501
Minecraft Steve gets sucked into Portal 1, and now he must beat the game! Will he win, will he even survive? Read this awesome crossover to find out!
Crossover - Portal & Minecraft - Rated: K - English - Adventure/Suspense - Chapters: 1 - Words: 3,233 - Published: 11/3/2016 - GLaDOS, Morality Core, Turret, Steve
The Things We Do For Science by 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: 50 - Words: 44,620 - Reviews: 10 - Favs: 4 - Follows: 4 - Updated: 10/27/2016 - Published: 5/5/2015 - Wilson H., Willow
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