Portal Crossovers
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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: 47 - Words: 339,556 - Reviews: 71 - Favs: 68 - Follows: 68 - Updated: 5/29 - Published: 2/17/2012 - Dragonborn/Dovahkiin, D. Rattmann, Wheatley, Chell
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: 4 - Words: 3,444 - Reviews: 2 - Favs: 1 - Follows: 1 - Updated: 5/26 - Published: 5/5 - Willow
A Week at Aperture Science by Kingtutgaming reviews
"Cave Johnson here! I have been informed by some pencil pushers that I need to do a documentary on a new creature we have made called Inklings. Usually I wouldn't bother doing this and would've just fired them by now, but I have a week to spare until the moon rocks I ordered get here."
Crossover - Portal & Splatoon - Rated: K+ - English - Chapters: 1 - Words: 1,227 - Reviews: 6 - Favs: 1 - Follows: 1 - Published: 5/24 - Cave Johnson
Bots Among Us by PixelsShattered reviews
ATLAS and P-Body are sold to RED and BLU to participate as the tenth class in a never ending war! Acting as the 'Portaleirs', each must fight for the worthless gravel pits beneath them. Rated T for alcohol and battle. Review!
Crossover - Portal & Team Fortress 2 - Rated: T - English - Humor/Friendship - Chapters: 5 - Words: 4,757 - Reviews: 6 - Favs: 2 - Follows: 3 - Updated: 5/22 - Published: 4/2
Moleman's Epic Rap Battles 32: GLaDOS Vs SHODAN by MolemanNineThousand
In an obvious and popular matchup which I'm surprised had yet to be made as a satisfactory Epic Rap Battle, Portal's quirky antagonist goes up against the malevolent supercomputer of System Shock fame, with a surprise appearance by the most vile machine ever conceived. Video coming soon!
Crossover - Portal & System Shock - Rated: T - English - Humor/Parody - Chapters: 1 - Words: 953 - Published: 5/21 - GLaDOS, Shodan - Complete
Worlds Collide by nadiarose1205 reviews
GLADoS gets bored of just testing with Chell, and the robots Atlas and Peabody don't interest her. So being the supercomputer that she is, GLADoS finds Tony Stark in a hidden Apeture Laboratories file, and of course wanting the best, she kidnaps him and places him in a testing chamber. What will happen when the worlds of Iron Man and Portal collide? Who knows. Let the fun begin.
Crossover - Ironman & Portal - Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 837 - Reviews: 1 - Published: 5/20 - A. E. Stark/Tony, Chell, GLaDOS, Wheatley
The Clockwork Heart by CodyNaomiSwire reviews
A Portal / Night Castle (Trans-Siberian Orchestra album) crossover - Chell wakes up to find herself washed ashore on a beach, with a mysterious castle awaiting her on the cliff top... A random, fairytale-like one-shot. Chelley, both Android! and Human!Wheatley
Crossover - Misc. Plays/Musicals & Portal - Rated: K+ - English - Hurt/Comfort/Fantasy - Chapters: 1 - Words: 4,270 - Reviews: 1 - Favs: 1 - Published: 5/19 - Chell, Wheatley - Complete
Compy: Chrono Convergence by GingerFloof26
The third installment in the "Compy" series. GLaDOS, now known as Compy, sends the Borealis to her old ally, Lucca Ashtear. But when the Combine steal the Frozen Flame of Chronopolis, will it be an opportunity to make amends with her past, or will it doom all their worlds to destruction?
Crossover - Chrono Trigger & Portal - Rated: T - English - Romance/Sci-Fi - Chapters: 9 - Words: 12,917 - Updated: 5/19 - Published: 4/27
General by Star Shimer
This is the story of Aperture Science Laboratories Head of Security. Or, as he would later be known, General. Portal(one and two) X Half-life. Contains Android(ish) OC.
Crossover - Half-Life & Portal - Rated: T - English - Sci-Fi - Chapters: 1 - Words: 740 - Published: 5/18 - G-Man, OC, GLaDOS
Hazael is Still Alive (WIP) by arieth-the-fallen
Once upon a time, an angel went to a different reality. And things were never the same. (An experiment in crossovers)
Crossover - Portal & Daughter of Smoke and Bone - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,950 - Follows: 1 - Published: 5/18 - GLaDOS
Let Steven eat Cake! by du911 reviews
A 5 year old Steven meets a 5 year old Cave; And both become fast friends! ...Lord have mercy on the poor doomed souls of beach city...and Pearls blood pressure...
Crossover - Portal & Steven Universe - Rated: T - English - Sci-Fi/Supernatural - Chapters: 1 - Words: 314 - Reviews: 2 - Favs: 1 - Follows: 1 - Published: 5/15 - Cave Johnson, Steven U.
Sei With Portals by RyokoHokage
Seiten Taisei couldn't remember why he was in Aperture Science Laboratories, but that didn't stop him from having fun with the portal gun.
Crossover - Saiyuki & Portal - Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 1,876 - Published: 5/14 - Goku S., GLaDOS - Complete
Kevley by GrenadeShotgun
"My big brothers stripped me naked and left me in the middle of a field at night! It was awesome!" -Kevin, College Bored
Crossover - Daria & Portal - Rated: K+ - English - Humor - Chapters: 1 - Words: 726 - Published: 5/8
Project Memento - Storyline A by Beta-D-glucose
Sometime after the Red Alert incident, the maverick hunters receive a strange call for help, which brings them to even stranger places. The facilities of the Aperture Science holds many mystery, and deadly traps. Will they able to pull it off, and stay alive? (This is the third - Axl's - parallel storyline. Check out the other two as well! OC content.)
Crossover - Mega Man & Portal - Rated: T - English - Adventure/Humor - Chapters: 2 - Words: 5,879 - Favs: 1 - Follows: 1 - Updated: 5/8 - Published: 3/24 - Axl, X, Zero, Wheatley
Sixteen Important Things Valkyrie Cain Learned by TheBigCat reviews
...at the Aperture Science Testing Facility last Tuesday
Crossover - Portal & Skulduggery Pleasant series - Rated: K - English - Humor/Adventure - Chapters: 1 - Words: 444 - Reviews: 1 - Favs: 1 - Published: 5/7 - GLaDOS, Turret, Valkyrie C./Stephanie E., Skulduggery P. - Complete
TOD dr who portal by 1980-somethingspace-girl reviews
Just read.
Crossover - Doctor Who & Portal - Rated: T - English - Sci-Fi/Humor - Chapters: 4 - Words: 892 - Reviews: 3 - Favs: 1 - Follows: 1 - Updated: 5/6 - Published: 1/4
Of Portals and Caves by theotherhero-of-time reviews
(Ugh, I'll come up with a better title later.) Ever wondered what happened to Quote after Cave Story ended? What if the island was above the planet, and it happened to be Earth? And what if the entrance to Aperture was open? (I'm terrible at this...)
Crossover - Cave Story & Portal - Rated: T - English - Chapters: 2 - Words: 1,164 - Reviews: 2 - Favs: 1 - Follows: 2 - Updated: 5/3 - Published: 7/31/2014
Temptation by Beth Einspanier reviews
Tony Stark finds himself advising JARVIS about his new girlfriend. JARVIS' new girlfriend, that is. Movie-verse Iron Man. Rated T for innuendo and colorful technological metaphors.
Crossover - Marvel & Portal - Rated: T - English - Friendship/Humor - Chapters: 1 - Words: 1,112 - Reviews: 4 - Favs: 2 - Follows: 1 - Published: 4/29
My little Pony Friendship is Portals by Golden Light 001 reviews
Chell after finally escaping Aperture Science Fines herself in a clearing in the Everfree Forest after getting to the edge of the forest she get a surprise that she never expected. P.S. Please do not complain about the companion cube with a dead person in it thank you. Minor cussing or major cussing
Crossover - My Little Pony & Portal - Rated: T - English - Adventure/Friendship - Chapters: 6 - Words: 2,484 - Reviews: 9 - Favs: 5 - Follows: 6 - Updated: 4/28 - Published: 4/30/2014 - Fluttershy, Rainbow Dash, Twilight Sparkle, Chell
SGA Aperture by McKay Rulez reviews
Cave Johnson of Aperture Science becomes the new leader of Atlantis after the IOA and UN pull the SGC's funding away. (Note: Rodney McKay, Cave Johnson and Caroline are related in this crossover.)
Crossover - Stargate: Atlantis & Portal - Rated: T - English - Sci-Fi/Family - Chapters: 2 - Words: 1,633 - Reviews: 1 - Favs: 1 - Follows: 2 - Published: 4/28 - Rodney M., John S., Cave Johnson
Project Memento - Storyline Z by Beta-D-glucose reviews
Sometime after the Red Alert incident, the maverick hunters receive a strange call for help, which brings them to even stranger places. The facilities of the Aperture Science holds many mystery, and deadly traps. Will they able to make it through? Let's find out! (This is the second - Zero's - parallel storyline. Check out the others as well! OC content.)
Crossover - Mega Man & Portal - Rated: T - English - Adventure/Family - Chapters: 2 - Words: 5,691 - Reviews: 1 - Favs: 1 - Follows: 1 - Updated: 4/18 - Published: 3/16 - Axl, X, Zero, GLaDOS
The New Story by PixelsShattered reviews
After escaping Aperture, Chell finds herself in a new place, with a new voice, and no way out. Reviews super appreciated. Rated T out of paranoia
Crossover - Portal & Stanley Parable - Rated: T - English - Humor/Adventure - Chapters: 5 - Words: 3,995 - Reviews: 2 - Favs: 1 - Follows: 1 - Updated: 4/17 - Published: 2/22 - Chell, Weighted Companion Cube, Stanley, Narrator
Portals of DOOM! by Cat Fishy reviews
After being released from Aperture, Chell has reintegrated with hyuuman society, but something is wrong. Why is everyone so stupid? Is that green kid really an alien? And did Black Mesa somehow cause the apocalypse? Meanwhile, Red and Purple wreak havoc on the universe, and Miyuki is not impressed. No pairings, mostly canon, post-Portal 2/The Trial.
Crossover - Invader Zim & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 22 - Words: 17,579 - Reviews: 15 - Favs: 7 - Follows: 4 - Updated: 4/16 - Published: 1/13/2013 - Dib, Almighty Tallest Miyuki, Chell, GLaDOS
Project Memento - Storyline X by Beta-D-glucose reviews
Sometime after the Red Alert incident, the maverick hunters receive a strange call for help, which brings them to even stranger places, filled with many mystery. Whether they fall into a deadly trap in the facilities the Aperture Science or not... of course they do. The real question is: will they be able to escape from it? (This is one of the three parallel storylines. OC content)
Crossover - Mega Man & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 5,205 - Reviews: 2 - Favs: 1 - Follows: 1 - Updated: 4/9 - Published: 3/14 - Axl, X, Zero, GLaDOS
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: 16 - Words: 31,098 - Reviews: 21 - Favs: 13 - Follows: 25 - Updated: 4/8 - Published: 12/14/2014 - Twilight Sparkle, Fluttershy, GLaDOS, Wheatley
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