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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: 48 - Words: 41,101 - Reviews: 9 - Favs: 2 - Follows: 4 - Updated: 7/28 - Published: 5/5/2015 - Wilson H., Willow
Neon Genesis: The Aperture Defense Network by PixelsShattered
After the Second Impact, the body of Lilith is hastily moved to the most defensible place on the planet, somewhere most people have never heard of, and somewhere the government wanted to keep under the rug. Aperture Science, Michigan Branch is quickly fortified and the one person GLaDOS vowed to never awaken is forced to be brought out of stasis. First of this kind, R&R!
Crossover - Evangelion & Portal - Rated: T - English - Sci-Fi/Adventure - Chapters: 4 - Words: 7,679 - Favs: 5 - Follows: 5 - Updated: 7/24 - Published: 4/19 - Chell, GLaDOS, Wheatley
A Portal In Time by legoagentny
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: 2 - Words: 1,053 - Favs: 2 - Follows: 7 - Updated: 7/22 - Published: 7/12
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: 13 - Words: 12,485 - Reviews: 11 - Favs: 16 - Follows: 24 - Updated: 7/14 - Published: 5/2 - Chell, Wheatley, Sans
Fallout: Aperture Science by cpl20
The wasteland is a dangerous place. Chell hasn't seen the outside of aperture for over two hundred years. Now she is about to learn how much the world has changed while she was gone...
Crossover - Fallout & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 2,684 - Favs: 3 - Follows: 5 - Updated: 7/13 - Published: 7/12 - Chell
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: 18 - Words: 47,678 - Reviews: 277 - Favs: 1,100 - Follows: 1,251 - Updated: 7/11 - Published: 10/18/2015 - [Harry P., Hermione G.] Chell, GLaDOS - Complete
GLaDtobeyourfriend by TheExpL0DiNgaPplE reviews
Fluttershy has stumbled upon something hidden deep in the Everfree Forest only to bring about something from the past. Something ancient has been hiding for a VERY longtime. Something very GlaD to be still alive and back.
Crossover - My Little Pony & Portal - Rated: T - English - Adventure/Friendship - Chapters: 20 - Words: 43,188 - Reviews: 47 - Favs: 28 - Follows: 51 - Updated: 7/6 - Published: 12/14/2014 - Twilight Sparkle, Fluttershy, GLaDOS, Wheatley
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: 59 - Words: 376,227 - Reviews: 74 - Favs: 79 - Follows: 73 - Updated: 7/3 - Published: 2/17/2012 - Dragonborn/Dovahkiin, D. Rattmann, Wheatley, Chell
PorTale by IgnisWings reviews
The monsters of the underground live peacefully, before a human salt mine, some abandoned labs, and a murderous computer are discovered. The characters shall test their way out of the abandoned labs. Rated K , due to Portal's rating.
Crossover - Portal & Undertale - Rated: K+ - English - Sci-Fi/Angst - Chapters: 8 - Words: 5,299 - Reviews: 12 - Favs: 16 - Follows: 31 - Updated: 6/21 - Published: 1/29 - Cave Johnson, GLaDOS, OC, Papyrus
Weatley and Space Cores UnBEARable Adventure by thenewjimmyj reviews
When Space Core accidentally bumps into Wheatley he sends themselves back to earth to the humid san fransisco. I will tell more in the story.
Crossover - Portal & We Bare Bears - Rated: K+ - English - Humor/Adventure - Chapters: 5 - Words: 1,283 - Reviews: 4 - Follows: 1 - Updated: 6/14 - Published: 11/13/2015
Welcome to Aperture by HRHTURQ
In which Carlos lays around in a pool of oobleck, and is subsequently kidnapped by Atlas, P-Body and POTaTOS. Cecil wears a juniper ball gown and his favorite diving helmet, and the Faceless Old Woman Googles pictures of cremains.
Crossover - Portal & Welcome to Night Vale - Rated: T - English - Humor/Romance - Chapters: 2 - Words: 5,487 - Updated: 6/13 - Published: 6/6 - ATLAS, GLaDOS, P-body
Everybody Wants You Gone by Citrus Sinensis reviews
Just a silly Songfic that popped into my head at an outrageously late hour, just Harry singing GLaDOS'song from Portal 2 before killing Voldy in DH. Yes the title sucks, no I dont care. I don't own HP, Portal, a PC, or Sweden. Reviews and co. very much appreciated. Enjoy!
Crossover - Harry Potter & Portal - Rated: K+ - English - Humor/Poetry - Chapters: 1 - Words: 560 - Reviews: 1 - Favs: 1 - Published: 6/11
Compy: Keeper Of Memory by GingerFloof26 reviews
Fouth installment in the "Compy" series. Compy, formerly known as GLaDOS, and Lucca Ashtear plunge headlong into a conflict with the Combine in an effort to retrieve the Frozen Flame. But the greatest obstacles they face will be from within. Can they surmount their own fears in time to prevent a multidimensional disaster?
Crossover - Chrono Trigger & Portal - Rated: K+ - English - Romance/Sci-Fi - Chapters: 4 - Words: 5,084 - Reviews: 4 - Updated: 6/5 - Published: 11/26/2015
Webs in scientific endeavors by T.H.M. Star Shine
What happens when our favorite web head ends up in aperture science.
Crossover - Spider-Man & Portal - Rated: T - English - Chapters: 1 - Words: 120 - Follows: 1 - Published: 5/30
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: 20 - Words: 135,810 - Reviews: 106 - Favs: 84 - Follows: 102 - Updated: 5/22 - Published: 8/6/2013 - Dib, Zim, Wheatley, GLaDOS
Finally Human (A Portal Fanfiction) by Morgan64
What would happen if Wheatley and GLaDoS were finally human?
Crossover - Half-Life & Portal - Rated: T - English - Sci-Fi/Mystery - Chapters: 2 - Words: 583 - Updated: 5/8 - Published: 12/2/2015
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 - Chapters: 2 - Words: 1,780 - Follows: 2 - Updated: 5/7 - Published: 2/6 - 11th Doctor, D. Rattmann, GLaDOS, Weighted Companion Cube
Do Not Submerge the Device by kitkins13 reviews
The portal device breaks, and opens a portal to the Dead Space universe. Portal 2/Dead Space 1, probably not very canon compliant. I have no idea where this is going, but hey, join me for the mystery. (fyi, there won't be any romantic links here since I'm useless at writing that stuff.)
Crossover - Portal & Dead Space - Rated: T - English - Sci-Fi - Chapters: 2 - Words: 4,179 - Reviews: 3 - Favs: 1 - Follows: 3 - Updated: 4/29 - Published: 11/1/2015
The Subject's Gauntlet by TheEccentricScientist reviews
In the years that followed the fall of the British Government, there was much speculation on the events surrounding it- both on the so-called "Mandrake Phenomenon" and the successful journey through Ptolemy's Gate supposedly made by Ms Kitty Jones. However, in making the leap from theory to experimentation, Aperture Science may have got more than they bargained for.
Crossover - Portal & Bartimaeus Trilogy - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 5,072 - Reviews: 1 - Favs: 1 - Updated: 4/9 - Published: 2/17 - Chell, Wheatley
We don't need Portals by BlackNightmareDragon
When a modified DeLorean and a lightning bolt get Doc and Marty stuck in a post-apocalyptic America, their only hope of a way home is to investigate a shed. But when that shed hides more than just tools, they discover a whole underground scientific labyrinth, a couple of crazy AIs and the adventure of a lifetime.
Crossover - Back to the Future & Portal - Rated: T - English - Adventure/Friendship - Chapters: 19 - Words: 42,913 - Favs: 9 - Follows: 9 - Updated: 4/7 - Published: 1/30 - Doc/Dr. Emmett Brown, Marty McFly, GLaDOS, Wheatley
VOiCE of GLaDOS by The Black Maiden reviews
We are artists that sing, dance; we pose for the masses and what do we leave for ourselves? I used to look down on such creatures, but I was one of them once. And I'm one of them now.
Crossover - Portal & Vocaloid - Rated: T - English - Romance/Sci-Fi - Chapters: 2 - Words: 3,693 - Reviews: 25 - Favs: 12 - Follows: 33 - Updated: 4/3 - Published: 6/23/2011 - [GLaDOS, OC] Chell, Miku H.
Digital Hearts by JustAnotherFandomWriter reviews
A chance discovery leads Mettaton to cross paths with a certain robot who's intelligence and elegant beauty rivals his own, causing him to uncover something deep within himself.
Crossover - Portal & Undertale - Rated: T - English - Humor/Romance - Chapters: 3 - Words: 1,707 - Reviews: 3 - Favs: 9 - Follows: 12 - Updated: 3/26 - Published: 1/16
City Furry 34 by ChadR-2014 reviews
(Its crossover around Zootopia with Portal, Half Life and likely later BioShock series with some Fallout elements) Humans, Combine, Xen, Splicers are invading and some mutating desecents of modren day Lionheart, Bellweather, Hopps and Wilde. (And beware its still incomplete so please wait for next two or three more seperate chapters are coming your away)
Crossover - Portal & Zootopia - Rated: T - English - Sci-Fi/Fantasy - Chapters: 1 - Words: 270 - Reviews: 1 - Favs: 1 - Follows: 2 - Published: 3/25 - Cave Johnson, L. Lionheart, D. Bellwether, OC
Death Battle SEASON FINALE: GLaDOS vs Mother Brain by adamsebastian99 reviews
Portal vs Metroid Season Finale! Will GLaDOS show Mother Brain some test? Or will Mother Brain close GLaDOS portal of opportunity?
Crossover - Metroid & Portal - Rated: T - English - Humor/Adventure - Chapters: 1 - Words: 3,116 - Reviews: 2 - Favs: 1 - Published: 3/22 - Complete
A Hunter being hunted by Fandom Enthusiest
Chell: a brave, strong, and smart woman who loves hunting out the paranormal with her journal and her best friend. Wheatley: a worrisome, naive, good hearted man who is terrified of the paranormal. When Chell is no longer herself, only the wrong person is there with no one else. (Rated T for a slightly descriptive death and some language. Chelley in the end in a bit of twisted way)
Crossover - Portal & Gravity Falls - Rated: T - English - Angst/Supernatural - Chapters: 1 - Words: 1,194 - Published: 3/20 - Chell, Wheatley, Bill
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