Half-Life
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50 free Half-Life trivia questions with answers — trivia quiz, new questions added Oct 2026.
Half-Life changed what a first-person shooter could be. When Valve released it in 1998, players expected corridors and keycards; instead they got a commute to work, an experiment gone wrong and a story that never took the controls away. Its sequel raised the bar again, and the long wait for a third numbered game has become one of gaming's favourite running jokes. This quiz covers the whole series: Gordon Freeman's escape from Black Mesa, the expansions that retold the disaster from other viewpoints, the Combine-occupied world of Half-Life 2 and its episodes, and Half-Life: Alyx. Expect questions on characters, creatures, weapons and locations, along with behind-the-scenes trivia about the cast, the technology, the fan projects the games inspired and the episode that was never made. It is written for anyone who has ever picked up the series, whether you finished the first game in the nineties or arrived with a headset decades later. Most questions are fair to casual fans, with a few deep cuts for players who know their development history.
30 of 50 questions with answers and explanations. Play the quiz
Q 01Which everyday tool is Gordon Freeman's signature melee weapon throughout the Half-Life series?
Crowbar
The crowbar is so tied to Gordon that Half-Life: Alyx ends with Eli Vance handing one back to him.
Q 02Before the Black Mesa disaster in Half-Life, what is hero Gordon Freeman's profession at the research facility?
Theoretical physicist
Theoretical physicist Gordon Freeman never speaks a word, and players see the whole disaster through his eyes.
Q 03Which small leaping alien in Half-Life turns its human victims into shambling zombies?
Headcrab
The Headcrab doubles as a weapon in Half-Life 2, where the Combine fire rockets packed with the parasites at resistance hideouts.
Q 04Which weapon carried by Gordon Freeman in Half-Life 2 is formally known as the Zero Point Energy Field Manipulator?
Gravity Gun
The Gravity Gun lets Gordon grab and hurl loose objects, and a late twist supercharges it so that he can fling enemy soldiers too.
Q 05Which Greek letter, the decay constant in the half-life equation, serves as the logo of the Half-Life series?
Lambda
Lambda also marks Gordon's protective suit and names the secret Black Mesa complex that teleports him off-world.
Q 06Half-Life: Alyx, the 2020 prequel to Half-Life 2, was built from the ground up for which technology?
Virtual reality
Virtual reality was the whole point: Valve made Alyx after players of The Lab, its set of VR minigames, asked for something bigger.
Q 07Which hit team shooter began as a fan-made Half-Life mod by Minh Le and Jess Cliffe?
Counter-Strike
Counter-Strike grew so popular as a free mod that Valve bought the rights and teamed up with its two creators.
Q 08Which PC game store had to be installed and running before anyone could play Half-Life 2, even from a disc?
Steam
Steam was just over a year out of beta when Half-Life 2 became the first high-profile game sold on it.
Q 09In which US state is the remote Black Mesa Research Facility, the setting of the original Half-Life, located?
New Mexico
New Mexico hides the underground laboratory, where Gordon's work involves nuclear and subatomic research until one experiment goes badly wrong.
Q 10In the censored German release of Half-Life, human characters were replaced with what, to tone down the violence?
Robots
Robots stood in for the human characters, spilling oil and gears instead of blood until Germany lifted the restriction in 2017.
Q 11At the very end of the original Half-Life, what does the mysterious G-Man offer survivor Gordon Freeman?
A job
A job is the offer, and it is hardly a free choice: accept and Gordon is placed in stasis, refuse and he is teleported to his death.
Q 12Gordon Freeman steps off a train at the start of Half-Life 2 into which Combine-occupied Eastern European setting?
City 17
City 17 was designed by Bulgarian-born art director Viktor Antonov, who mixed Soviet-era Brutalist blocks with looming alien structures.
Q 13What is the name of the towering robot that Alyx Vance introduces to Gordon Freeman in Half-Life 2?
Dog
Dog looks more like a gorilla than a canine, and was built by Alyx's father, Eli, to give her both companionship and protection.
Q 21What is the name of the alien border world that Gordon Freeman is teleported to in the final chapters of Half-Life?
Xen
Xen was widely seen as the weakest stretch of the original, so the fan remake Black Mesa reworked those final chapters completely.
Q 22The first Half-Life runs on a heavily modified version of the engine built for which rival shooter?
Quake
Quake provided the foundation under licence from id Software, though Gabe Newell estimated that about 75% of the final engine code was Valve's own.
Q 23Valve's founders, Gabe Newell and Mike Harrington, left which company before making Half-Life as their first game?
Microsoft
Microsoft veteran Newell later took out a loan to pay for reworking the game, after the team concluded in 1997 that it simply was not fun.
Q 14Which zombie-infested town does Gordon Freeman cross in Half-Life 2 with help from its lone resident, a priest?
Ravenholm
Ravenholm's last inhabitant is Father Grigori, who sees Gordon through to a Resistance outpost where he is handed a dune buggy.
Q 15Which former Black Mesa administrator rules Earth as the Combine's puppet leader in Half-Life 2?
Wallace Breen
Wallace Breen tries to flee by teleporter in the finale, but Gordon destroys the reactor and he falls into the abyss.
Q 16Which skyscraper in Half-Life 2 serves as headquarters for the Combine's puppet ruler of Earth?
The Citadel
The Citadel becomes the threat itself in Episode One, when its damaged core is set to collapse and destroy everything around it.
Q 17Which puzzle game, set inside the Aperture Science labs, shares its fictional universe with Half-Life?
Portal
Portal casts Aperture Science as Black Mesa's rival, racing it to develop similar teleportation technology.
Q 18Which 2007 Valve compilation packaged Half-Life 2 and Episode One with three new games, including Episode Two?
The Orange Box
The Orange Box nearly had a sibling: a planned Black Box holding only the three new games was cancelled.
Q 19Which game engine did Valve build alongside Half-Life 2, later reused by fans for the remake Black Mesa?
Source
Source took its name from a code folder: Valve split the first game's code into a finished gold branch and a riskier one labelled Src.
Q 20Which physics sandbox grew out of a fan project built on Half-Life 2, with objects to manipulate but no objectives?
Garry's Mod
Garry's Mod started as its creator's side project while he made another game, yet by 2021 it had sold more than 20 million copies.
Q 24Half-Life hero Gordon Freeman earned his PhD at which real American university before joining Black Mesa?
MIT
MIT gave Gordon his doctorate, while his goatee and ponytail came from the office: Valve artist Chuck Jones modelled them on his own look.
Q 25In Half-Life, what name is given to the disastrous event at Black Mesa that tears open a rift to an alien world?
A resonance cascade
A resonance cascade erupts when Gordon's team runs an experiment on a crystal of unknown origin, wrecking the lab and letting hostile creatures in.
Q 26Which alien species, enslaved enemies in the first Half-Life, return as allies of the human Resistance in Half-Life 2?
Vortigaunts
Vortigaunts were freed from slavery by Gordon, and Eli Vance, the first human to make peaceful contact, persuaded them to side with humanity.
Q 27Which security guard, voiced like the G-Man by Michael Shapiro, is the playable hero of Half-Life: Blue Shift?
Barney Calhoun
Barney Calhoun returns in Half-Life 2 as a mole for the Resistance, working undercover inside the Combine's Civil Protection ranks.
Q 28Which 1999 Half-Life expansion retells the Black Mesa disaster through the eyes of US Marine Adrian Shephard?
Opposing Force
Opposing Force casts the player as one of the original game's enemies, a Marine sent in to neutralise the facility.
Q 29Which Texas studio, later known for Borderlands, developed the first Half-Life's official expansion packs?
Gearbox Software
Gearbox Software was founded in February 1999 and learned its trade on Valve's hit, working on every expansion or console port before the sequel.
Q 30Which publisher signed Valve to a one-game deal and released the first Half-Life when others thought it too ambitious?
Sierra
Sierra put up an advance of around $1 million in return for 30% of the revenue and all of the intellectual property.