Shephard's Mind (TV Series 2009–2013)
Is made up almost entirely of in-game footageHalf-Life: Through the City (Video Game 2024)
Unofficial sequel
"Outside Xtra" 7 Embarrassing Ways You Failed the Tutorial (TV Episode 2021)
Clips from the video game are shown while the cast comment on it.
Half-Life: Blue Shift (Video Game 2001)
Half-Life: Decay (Video Game 2001)
Half-Life 2 (Video Game 2004)
Half-Life 2: Lost Coast (Video Game 2005)
Half-Life 2: Episode One (Video Game 2006)
Half-Life (Video Game 1998)
Half-Life: Blue Shift (Video Game 2001)
"Icons" Half-Life (TV Episode 2004)
The spin-off was mentioned as an expansion game for Half-Life.Portal (Video Game 2007)
Aperture Science Handheld Portal Device whose initials are ASHPD, are a reference to A.Shephard the protagonist from Opposing force."Zero Punctuation" Super Mario Galaxy 2 (TV Episode 2010)
Poster shown."Zero Punctuation" Serious Sam 3: BFE (TV Episode 2012)
Poster shown.
The Andy Griffith Show (TV Series 1960–1968)
"Otis", an overweight variation introduced in Opposing Force, is named after Hal Smith's character Otis Campbell from The Andy Griffith Show.- In Opposing Force, two are mentioned from Star Wars. First, a security guard asks a scientist if he has seen the new IG-88. Second, at the end of this segment, you see doors that look like they were from the trash compactor room in A New Hope.
Aliens (1986)
Speaking of Aliens, some of the soldiers' dialogue in Opposing Force is lifted from that of the Colonial Marines.Predator (1987)
The opening helicopter ride in Opposing Force is very similar to the helicopter ride scene in PredatorFull Metal Jacket (1987)
The generic Drill Instructor character was inspired by the character Gunnery Sergeant Hartman
Half-Life (Video Game 1998)
First expansion pack for Half-Life.
The Andy Griffith Show (TV Series 1960–1968)
"Otis", an overweight variation introduced in Opposing Force, is named after Hal Smith's character Otis Campbell from The Andy Griffith Show.Full Metal Jacket (1987)
Opposing Force starts with a tutorial set during boot camp, paying homage to Full Metal Jacket boot camp sequences.Half-Life (Video Game 1998)