Sonic the Hedgehog and Half-Life Crossovers
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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...
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.)
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: 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.
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.
Chaos Cascade by MisterCereal reviews
Gordon Freeman, an average scientist working at the Black Mesa Research Facility, is in charge of handling the newest test subject; and odd green crystal-like object.
Rated: T - English - Adventure/Sci-Fi - Chapters: 1 - Words: 487 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 4/27/2014
HalfLife: Source Code by thermonuclear.cupcake reviews
Some thing at Black Mesa has gone terribly wrong, and there's only two people who can clean it up.
Rated: T - English - Suspense/Adventure - Chapters: 2 - Words: 852 - Reviews: 4 - Favs: 4 - Follows: 2 - Updated: 1/4/2012 - Published: 12/28/2011 - Sonic
The Adventures of the One Free Hedgehog by I Really Hate Captchas reviews
ur all still gay
Rated: T - English - Adventure/Friendship - Chapters: 1 - Words: 989 - Reviews: 10 - Favs: 1 - Follows: 1 - Published: 6/23/2010 - Complete
The combines reckoning by Tlaloc Amnell reviews
The Combines Reckoning is a small story with my character Tlaloc and a few others who get sent back in time to City 17.
Rated: T - English - Sci-Fi/Mystery - Chapters: 1 - Words: 3,415 - Reviews: 1 - Follows: 1 - Published: 1/11/2010