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A Familiar Force by Jeggetts reviews
After defeating the Gene Worm Adrian Shephard thought it was his fate to be forever sealed in an endless void. However it turns out that someone has an... interest in the events that will take place on a world called Halkegenia.
Crossover - Half-Life & Familiar of Zero - Rated: T - English - Sci-Fi/Fantasy - Chapters: 14 - Words: 124,103 - Reviews: 93 - Favs: 177 - Follows: 209 - Updated: 7/19 - Published: 9/16/2013 - A. Shephard, Louise
Half-Life: Sudden FEAR by EarthGovTrooper223 reviews
After facing all odds in the city of Fairport, Michael Becket is now given a new mission from a new employer...
Crossover - F.E.A.R. & Half-Life - Rated: T - English - Adventure/Supernatural - Chapters: 2 - Words: 1,315 - Reviews: 1 - Favs: 2 - Follows: 1 - Updated: 7/8 - Published: 2/13 - G-Man, Gordon F., Sgt. Becket
Mechanical Instinct: The Seven Hour War by FletchStories
10 friends. 1 enemy. 1 bond to last a lifetime. The Black Mesa research facility has exploded, and with the deadly shrapnel lies something more dangerous. The twin portals have opened, and two species have been introduced to the warm light of New Mexico. They will stop at nothing to enslave or wipe out humanity, but they haven't counted on humanities last hope. Mechanical Instinct.
Crossover - Half-Life & Five Nights at Freddy´s - Rated: T - English - Sci-Fi/Parody - Chapters: 1 - Words: 2,073 - Published: 6/23 - Freddy Fazbear, Chica, Bonnie, Foxy
Half-Topia 2 by applecreature
Join Nick Wilde, former scientist, and rebellion leader, as he attempts to thwart the efforts of the sinister Combine! Can Nick, with friends new and old defeat the Combine, or will their efforts go to ashes? (May contain trace amounts of WildeXHopps)
Crossover - Half-Life & Zootopia - Rated: T - English - Sci-Fi/Adventure - Chapters: 3 - Words: 2,084 - Favs: 1 - Follows: 1 - Updated: 6/18 - Published: 6/16 - [Nick W., Judy H.] The Combine
Half-Life: Theory of Mystery by thestevemann123 reviews
Adrian has been called by the G-Man to take care of business and this offer was what Shephard wished except, this was different. Rated T for strong language.
Crossover - Half-Life & Gravity Falls - Rated: T - English - Humor/Adventure - Chapters: 1 - Words: 413 - Reviews: 1 - Published: 6/7 - A. Shephard, Dipper P., Mabel P.
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
Half-Life: Oppressive Forces by EarthGovTrooper223 reviews
After facing nearly impossible odds in Black Mesa, Corporal Shepherd must now fight alongside The Sons of Heephis not only to save Mobius, but the entire universe from destruction at the hands of a powerful being known as Zeilo. However, Shepherd's not alone...
Crossover - Sonic the Hedgehog & Half-Life - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 1,390 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 4/12 - Sonic, A. Shephard, OC
Mobius Opposing Forces by EarthGovTrooper223
Gman gives everyone's favorite HECU Marine a new assignment. And where else if not Mobius. Shephard now has to help Sonic and his friends fight Robotnik, until a new enemy arrives to conquer the whole planet... R&R, Enjoy! (Shephard will be using standard USMC weapons, just so you know.)
Crossover - Sonic the Hedgehog & Half-Life - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 977 - Follows: 1 - Updated: 4/10 - Published: 11/27/2014 - Sonic, Sally, A. Shephard, G-Man
Half-Life X by EarthGovTrooper223
After refusing the Gman's employment offer, Gordon Freeman now finds himself waking up to find the world being different compared t when he left to fight the Xen Creatures...
Crossover - Half-Life & Sonic X - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 493 - Favs: 3 - Follows: 2 - Updated: 4/10 - Published: 4/5 - G-Man, Gordon F.
Half-Life: Guard Duty by EarthGovTrooper223 reviews
After trying to get out of City 17 before the Citadel went critical, Barney Calhoun finds himself and three others stranded on a new world with no way of returning to Earth. This new world is Mobius.
Crossover - Sonic the Hedgehog & Half-Life - Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 627 - Reviews: 1 - Favs: 2 - Follows: 2 - Updated: 4/10 - Published: 3/29 - Sonic, Barney C.
Digi-Mesa by EarthGovTrooper223 reviews
Renamon after investigating an energy surge in the Digital World for Calumon and the Sovereigns, finds herself being teleported back to Earth 20 years into the future to an Eastern European city called City 17...(UNCANCELLED AS OF 12/30/2015)
Crossover - Digimon & Half-Life - Rated: T - English - Adventure/Sci-Fi - Chapters: 2 - Words: 1,364 - Reviews: 1 - Favs: 2 - Updated: 4/10 - Published: 9/21/2015 - Renamon, G-Man, OC
Forgotten by Zaster21
Ellie and her boyfriend is separated by Wallece Breen but Ellie tries to find Dean and take Breen to hell with her.
Crossover - Half-Life & Last of Us - Rated: T - English - Suspense/Tragedy - Chapters: 1 - Words: 433 - Published: 4/6 - Gordon F., W. Breen, Ellie, Joel
ANNOUNCEMENT - Salvation Shorts 1: An Interview with the Legends by Jesse De La Rosa reviews
An announcement regarding the small installments in the future of the Salvation Saga.
Crossover - Half-Life & Mass Effect - Rated: K - English - Chapters: 1 - Words: 718 - Reviews: 3 - Favs: 2 - Follows: 3 - Published: 3/6 - Complete
The Chronicles Of The Free Men: The Seven Hour War by FletchStories
The two Freeman brothers, Percy and Gordon are thrust into an unwanted war with an unwanted species. The twin portals have opened and the Black Mesa incident has begun. The Resonance Cascade has brought the monsters to our door. Xen and Combine are gathering and joining forces, humanities governments are lazing and there is talk of submission in the news. The war has begun. AU.
Crossover - Half-Life & Percy Jackson and the Olympians - Rated: T - English - Supernatural/Sci-Fi - Chapters: 1 - Words: 1,026 - Published: 3/6 - Alyx V., Barney C., Gordon F., Percy J.
War games by KittyHawkSG63
Life in the Gameverse for Dash is hard, but she finds out, it can get harder
Crossover - Half-Life & My Little Pony - Rated: T - English - Friendship/Adventure - Chapters: 2 - Words: 2,874 - Favs: 1 - Updated: 2/16 - Published: 2/15
Shift by Madman The Mad reviews
When her Council-funded expedition goes horrifyingly wrong, Liara T'soni must find a way back home. But she is caught up in the battle against the Combine, an inter-dimensional empire of immense power. Alongside Gordon Freeman, she will overthrow the combine to ensure humanity, and the galaxy's, survival against the Combine. But bigger powers are at play here. Much bigger...
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 1 - Words: 1,349 - Reviews: 4 - Favs: 8 - Follows: 17 - Published: 2/6 - G-Man, Gordon F., Liara T'Soni
The Strange Summoning by Apparuerit Diabolo et Loqui reviews
Who has Louise summoned? Oneshot
Crossover - Familiar of Zero & Half-Life - Rated: K - English - Mystery/Fantasy - Chapters: 1 - Words: 591 - Reviews: 7 - Favs: 10 - Follows: 7 - Published: 2/5 - G-Man, Louise, Colbert - Complete
Hellboy vs Nightmare House by Kill Boss '98 reviews
What happens when you put a little known Half-Life mod together with some familiar comic book characters? Read to find out! Nightmare House and Emily/the girl on the cover are owned by We Create Stuff and Hellboy is owned by Dark Horse Comics
Crossover - Half-Life & Hellboy - Rated: T - English - Chapters: 2 - Words: 2,881 - Reviews: 1 - Updated: 12/19/2015 - Published: 10/16/2015 - Hellboy, Pro. Bruttenholm - Complete
Half-Life The Convergence by deathwing17 reviews
A Council funded expedition into a previously unexplored system has gone horribly wrong. Now the expedition team find themselves stranded on a hostile world and hunted by a ruthless enemy. They soon join forces with a group of rebels hell-bent on freeing their home world and stopping a threat that could destroy all of galactic civilization. A threat known only as the Combine.
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi/Adventure - Chapters: 8 - Words: 42,266 - Reviews: 55 - Favs: 110 - Follows: 154 - Updated: 12/13/2015 - Published: 9/12/2013 - A. Shephard, Alyx V., Gordon F., Liara T'Soni
Salvation: The Taking of the Carmenta Illustria by Jesse De La Rosa reviews
Salvation - Episode I: After a hard fought battle, a little rest and relaxation seems ages overdue. However the proud crew of the SR-2 Normandy is about to be crudely reminded that there is no rest for the wicked... Follow-up to Salvation
Crossover - Half-Life & Mass Effect - Rated: T - English - Sci-Fi - Chapters: 46 - Words: 311,108 - Reviews: 91 - Favs: 74 - Follows: 79 - Updated: 11/15/2015 - Published: 5/11/2012 - Complete
Right Woman, Wrong Place by The Cowardly Christian 'du911 reviews
Rise and Shine Miss Universe! Rise and Shine! Not that I'm implying that you've been sleeping on the job. No one's more deserving of rest than you. But your son awaits... StevenxLapisxConnie
Crossover - Half-Life & Steven Universe - Rated: T - English - Supernatural/Sci-Fi - Chapters: 4 - Words: 2,244 - Reviews: 12 - Favs: 5 - Follows: 7 - Updated: 10/28/2015 - Published: 6/28/2015 - G-Man, Steven U., Rose Quartz
Half-Life 3: The End: Lambda is for love by InOnTheJoke
Finaly a satisfiing concluesson 2 the epic storey of gOrden Freeman. No lose end. Everything warped up nicelee.
Crossover - Half-Life & Portal - Rated: K+ - English - Romance/Parody - Chapters: 1 - Words: 316 - Published: 10/26/2015
MOCII - The Failed Voyage of the Borealis by Lagiacrus reviews
Sequel to 'The Misadventures of Caroline II'. When a Floppy Disk containing a challenge and information about the Borealis comes into GLaDOS' possession, she's willing to cross the sea to find out who dared challenge her. Caroline II is of course dragged along for the ride. But there's more to the Borealis than meets the eye - was its initial disappearance really an accident...?
Crossover - Half-Life & Portal - Rated: T - English - Adventure/Hurt/Comfort - Chapters: 5 - Words: 14,685 - Reviews: 23 - Favs: 14 - Follows: 15 - Updated: 10/5/2015 - Published: 8/8/2014
The Freeman Odyssey: Connections by Elizabethia reviews
What if, on the way to the Borealis, the helicopter crashes? What if they get captured? Will they get to the Borealis before it's too late? What secrets will they discover? Find out in Connections. This is a hl2 continuation and is much better than the summary. It is also my first story, so please don't flame. Rated T because its tf2. [Discontinued]. Sorry.
Crossover - Half-Life & Team Fortress 2 - Rated: T - English - Drama/Humor - Chapters: 21 - Words: 42,839 - Reviews: 4 - Favs: 5 - Follows: 4 - Updated: 9/25/2015 - Published: 5/6/2015 - Alyx V., Gordon F., OC
FNAF VS HALF LIFE by FNAFISAWESOME1987 reviews
when bad game half lief meets epic game fnaf, foxy and vincent will need to save the world from a bad guy
Crossover - Half-Life & Five Nights at Freddy´s - Rated: T - English - Suspense/Drama - Chapters: 1 - Words: 147 - Reviews: 11 - Published: 9/14/2015
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