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Lovesick Girl (Post-Yandere) by Madeline Myers
A girl who wants to believe she is cold and unfeeling is suddenly forced to embrace her vibrant and compassionate side.
Crossover - Portal & Doki Doki Literature Club - Rated: K+ - English - Chapters: 4 - Words: 7,074 - Updated: 9/29 - Published: 9/27
Echoes of the Past: The Unraveling Threads of Hogwarts by Hitmen01 reviews
In "Echoes of the Past: The Unraveling Threads of Hogwarts," Harry is introduced to a scientific world run by a supercomputer named GLaDOS. Harry's magical abilities make him a wizard with the power to control portals.
Crossover - Harry Potter & Portal - Rated: T - English - Hurt/Comfort/Adventure - Chapters: 1 - Words: 20,629 - Reviews: 1 - Favs: 5 - Follows: 5 - Published: 8/6 - Harry P., GLaDOS - Complete
The Boy Who Lived… In Aperture by Hitmen01 reviews
Harry Potter is sold to Aperture Science, where he learns about quantum physics, computational theory, and artificial intelligence. His story is one of science and discovery.
Crossover - Harry Potter & Portal - Rated: K+ - English - Hurt/Comfort/Adventure - Chapters: 1 - Words: 9,664 - Reviews: 2 - Favs: 9 - Follows: 11 - Published: 8/5 - Harry P., GLaDOS - Complete
Lost in Space by Idiotic Adventures reviews
Portal x Murder Drones Takes place after Episode: 1 and Portal 2 Wheatley was just traveling through space with his trusty (sort of?) companion the Space Core many years after he was jettisoned into orbit. When a strange pod bashes into them both and sends them flying into the atmosphere of Copper Nine. They find 2 different drones who save them from being abandoned in the snow.
Crossover - Portal & Murder Drones - Rated: T - English - Humor/Adventure - Chapters: 10 - Words: 26,894 - Reviews: 2 - Favs: 26 - Follows: 31 - Updated: 6/19 - Published: 2/10 - Wheatley, Space Core, Uzi D., N
The Cake That Lies by Anime0CC0Manga reviews
Time To Run Some Test Outside Of The Lab (I Own Nothing)
Crossover - Portal & One Punch Man/ワンパンマン - Rated: K - English - Humor/Sci-Fi - Chapters: 2 - Words: 2,805 - Reviews: 3 - Favs: 19 - Follows: 19 - Published: 4/26 - GLaDOS, Saitama
go do some science by QuantumAxolotl reviews
Had this idea that may sound dumb. What if you put Aperture Science under someone's basement; specifically, the pizzaplex. (another writing experiment)
Crossover - Portal & Five Nights at Freddy´s - Rated: T - English - Adventure/Sci-Fi - Chapters: 5 - Words: 7,124 - Reviews: 1 - Favs: 11 - Follows: 12 - Updated: 4/6 - Published: 3/11/2022 - Turret, Glamrock Freddy, Gregory
Still Alive: Timothy Goes to School Parody by Penutsonfire
A parody of "Still Alive" from Portal with lyrics themed around Timothy Goes to School!
Crossover - Portal & Timothy Goes to School - Rated: K - English - Parody/Poetry - Chapters: 1 - Words: 457 - Published: 3/26 - Complete
The Stardust of a Song by realest-nat reviews
The year is 192X and an unnamed American city's home to a cross-town rivalry, with each side under the guise of a name for scientific innovations. What began as a night out takes an unexpected turn as the right hands of both properly meet for the first time. [1920s AU. Also on AO3]
Crossover - Half-Life & Portal - Rated: T - English - Chapters: 1 - Words: 3,529 - Reviews: 1 - Follows: 1 - Published: 3/17 - Gordon F., Chell
Spla-perture Science by SalvarricHomer reviews
Somewhere in what was Northern Michigan, a lone Inkling discovers the remnants of a company known as Aperture Science.
Crossover - Splatoon & Portal - Rated: K+ - English - Adventure - Chapters: 1 - Words: 2,808 - Reviews: 1 - Favs: 3 - Follows: 4 - Published: 2/8 - Cave Johnson, OC - Complete
tangerines and cake by mrtorrance99
when shell awakens a young teen in a relaxation chamber they together and Wheatley solve chambers and attempt to escape also this is an AU where chell can talk
Crossover - Portal & Haikyu/ハイキュー - Rated: T - English - Sci-Fi/Adventure - Chapters: 9 - Words: 4,744 - Updated: 12/23/2022 - Published: 12/10/2022 - Chell, Wheatley, Shoyo H. - Complete
Kotaro Johnson Here! by The red mexican potato reviews
Imagine a world where Nana's son didn't turn out to be a hero-hating adult who caused a global catastrophe by abusing his family. But an Ambitious and possibly, definitely, insane entrepreneur with a penchant for investing in crazy super science. Watch what happens when Cave now Kotaro Johnson gets his hands on the world of My Hero Academia. With some portal character cameos.
Crossover - Portal & My Hero Academia/僕のヒーローアカデミア - Rated: M - English - Adventure/Humor - Chapters: 2 - Words: 6,064 - Reviews: 1 - Favs: 9 - Follows: 11 - Updated: 11/14/2022 - Published: 11/11/2022
A Worldlord visits YoRHa by anothokuro
It happened again. Anoth and his daughter are in a new Universe. May the Odyssey continue.
Crossover - Portal & Nier - Rated: M - English - Chapters: 1 - Words: 4,521 - Favs: 2 - Follows: 5 - Published: 9/12/2022 - OC, 2B, 9S, A2
Ein Weltenlord besucht YoRHa by anothokuro
Und wieder sind Anoth und seine Tochter in einer anderen Welt gelandet. Möge die Odyssee weitergehen.
Crossover - Portal & Nier - Rated: M - German - Chapters: 1 - Words: 4,509 - Published: 9/12/2022 - OC, 2B, 9S, A2
CHELL ENTERS: The Backrooms by CyberFyre
What happens when a horrible decision leads you to a place worse than Aperture? Chell takes a risk, but was it worth her curiosity?
Crossover - Misc. Games & Portal - Rated: T - English - Horror/Suspense - Chapters: 1 - Words: 674 - Favs: 1 - Follows: 1 - Published: 9/11/2022 - Chell
Portal Stories: Samus by Wileybot2004
A lone bounty hunter attempts to escape a insane facility and finds help along the way.
Crossover - Metroid & Portal - Rated: T - English - Chapters: 2 - Words: 503 - Favs: 1 - Follows: 1 - Published: 9/4/2022 - Samus A., Chell, GLaDOS, Wheatley
Portal Kombat! by Biggy T
A prequel to my story Gotham Knights, Dr. Rattmann has finally escaped Aperture and alerted SF that GLaDOS needs to be shut down and rescue any remaining survivors. Johnny and Sonya call in Cassie's team, Cyrax, and one of the CIA's greatest operatives Jack Ryan. Taking place in a world where your favorite heroes co exist it will be up to them to unplug GLaDOS.
Crossover - Mortal Kombat & Portal - Rated: T - English - Chapters: 1 - Words: 7,454 - Favs: 1 - Follows: 1 - Published: 9/1/2022 - Johnny Cage, Sonya B., D. Rattmann, GLaDOS - Complete
Second Life Choices by PortalsandArt reviews
Something in life guides everyone. Sometimes it's people, sometimes it's the choices that are made. Chell is on the surface and finds the world is a much different place than the depths of Aperture. Gordon and Alyx are trying to fulfill Eli's dying last wish but that's easier said than done. While at White Forest Barney Calhoun just tries to keep everything from falling apart.
Crossover - Half-Life & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 55 - Words: 180,907 - Reviews: 57 - Favs: 67 - Follows: 75 - Updated: 8/25/2022 - Published: 7/9/2020 - Alyx V., Barney C., Gordon F., Chell - Complete
No Rest For Chell by Victor2120 reviews
Chell found Aperture Science spaceship in the middle in the woods and decided to take on a ride on it. Only ending up Elpis and helping Vault Hunters open up the vault on Elpis. (Might change the rating)
Crossover - Portal & Borderlands - Rated: T - English - Sci-Fi/Adventure - Chapters: 2 - Words: 1,571 - Reviews: 2 - Favs: 11 - Follows: 14 - Updated: 7/19/2022 - Published: 5/14/2022 - Chell, Claptrap, Handsome Jack, Athena
The Wheatley Parable by Thursday's Dove reviews
This is the story of a core named "Wheatley". That's it. That's all there is. Would you like to know more? [YES] [NO]
Crossover - Portal & Stanley Parable - Rated: T - English - Humor/Adventure - Chapters: 37 - Words: 144,491 - Reviews: 11 - Favs: 16 - Follows: 13 - Updated: 5/27/2022 - Published: 5/11/2020 - Chell, Wheatley, Narrator
The Wrong Man in the Right Place by Two-Eyed Charlie reviews
Gordon arrives at City 17, but something is very much off... [COMPLETE]
Crossover - Half-Life & Portal - Rated: T - English - Humor - Chapters: 1 - Words: 1,182 - Reviews: 1 - Favs: 3 - Follows: 4 - Published: 4/2/2022 - G-Man, Gordon F., Cave Johnson - Complete
The Women of Tomorrow by Pre-Animation Man
"Power Girl is the best we have. If anyone can stop this, it's her." A tale of the Woman of Steel, and the effect she has on the people around her.
Crossover - My Little Pony & Portal - Rated: K - English - Chapters: 1 - Words: 5,992 - Published: 2/28/2022 - Complete
Doofenshmirtz Wheatley Incorporated! by KatieMarie999 reviews
Wheatley is floating in space, just like any other day, when he gets a download request from an unknown location. Someone wants to download his programming and build him a new body! Surely it's some kind of eccentric genius, right? This could be the start of a beautiful, and easily distractible, friendship.
Crossover - Portal & Phineas and Ferb - Rated: K+ - English - Humor - Chapters: 1 - Words: 4,003 - Reviews: 2 - Favs: 14 - Follows: 18 - Published: 12/22/2021 - Wheatley, Dr. Doofenshmirtz
Strange New World by LittleInkling64 reviews
Of Ratts and Men sequel. City 17 may be destroyed, but the Combine still reign supreme over Earth. Now, the Half-Life gang must find the Borealis so they can use its portal technology to find Alyx and finally beat the Combine. Luckily, three of the best candidates for the task have just rejoined the surface. Not so luckily, the Combine has found them first. See Ao3 for ch. updates!
Crossover - Half-Life & Portal - Rated: T - English - Adventure/Sci-Fi - Chapters: 8 - Words: 44,620 - Reviews: 2 - Favs: 6 - Follows: 7 - Updated: 12/6/2021 - Published: 2/26/2021 - Eli V., Gordon F., Caroline, Chell
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
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