IMHO.

Games like Half-Life: Source

If Half-Life: Source is your kind of game, the closest matches are Half-Life: Blue Shift, Half-Life: Opposing Force and Half-Life 2 — picked from the ranked list below. Reviewers single out its atmospheric, nostalgic and retro. Each pick is ranked by what players of this game also play, shared genres and tags, and review-mined similarity — not a generic popularity list.

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Half-Life: Source is a 2004 remaster of the 1998 first-person shooter developed and published by Valve. Available on Steam for $9.99, it runs at playable speed on Steam Deck. The Source engine upgrade brings dynamic shadows, modern water rendering with distinct visual shimmer, and ragdoll physics - features that players describe as making deaths feel visceral and the game's atmosphere unsettling. Set in a sci-fi world with aliens and zombies, players and reviewers note it offers a nostalgic experience for series veterans while serving as a modding platform for Half-Life content. The 7832 Steam reviews reflect a 64% positive rating, with longtime fans noting that ragdoll physics represent the most worthwhile enhancement over the original. The classic FPS action and challenging difficulty remain intact alongside the technical upgrades.

About Half-Life: Source: Winner of over 50 Game of the Year awards, Half-Life set new standards for action games when it was released in 1998. Half-Life: Source is a digitally remastered version of the critically acclaimed and best selling PC game, enhanced via Source technology to include physics simulation, enhanced effects, and more.

2004Action9.99 USDDeck PlayableWindows · macOS · Linuxby Valve
Half-Life: Source — Steam game cover
Players highlight
Acts as a modding platform for half life contentNostalgic experience for series veteransRagdoll physics are the only worthwhile enhancementAtmosphericNostalgicRetro

Players who liked Half-Life: Source also play

Steam players who put hours into Half-Life: Source also tend to own these titles — a signal called collaborative filtering. imho.run cross-references millions of library ownership patterns to surface games whose real audiences overlap, regardless of whether their genre tags match.

  1. Half-Life: Blue Shift

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Top pick for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.

    2001Action4.99 USDDeck PlayableSteam ↗
  2. Half-Life: Opposing Force

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Second-strongest match for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.

    1999Action4.99 USDDeck PlayableSteam ↗
  3. Half-Life 2

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Third-strongest match for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

    2004Action9.99 USDDeck VerifiedSteam ↗
  4. Black Mesa

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Ranked #4 for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    Relive Half-Life.

    2020ActionIndieAdventure19.99 USDDeck PlayableSteam ↗
  5. Half-Life

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Ranked #5 for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

    1998Action9.99 USDDeck VerifiedSteam ↗
  6. Half-Life: Alyx

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Ranked #6 for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    Half-Life: Alyx is Valve’s VR return to the Half-Life series. It’s the story of an impossible fight against a vicious alien race known as the Combine, set between the events of Half-Life and Half-Life 2. Playing as Alyx Vance, you are humanity’s only chance for survival.

    2020ActionAdventure59.99 USDSteam ↗
  7. Half-Life Deathmatch: Source

    WHY THIS

    Shares a retro mood with Half-Life: Source.

    Ranked #7 for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    Half-Life Deathmatch: Source is a recreation of the first multiplayer game set in the Half-Life universe. Features all the classic weapons and most-played maps, now running on the Source engine.

    2006Action9.99 USDDeck PlayableSteam ↗
  8. Battlezone 98 Redux

    WHY THIS

    Shares a retro mood with Half-Life: Source.

    Ranked #8 for Half-Life: Source fans by collaborative filtering across millions of Steam libraries. Shares Action with Half-Life: Source.

    One of the greatest sci-fi strategy games of all time returns with remastered visuals, online multiplayer and near unlimited mod content from Steam Workshop. Experience thrilling first person action and acclaimed RTS in this explosive alternate vision of the 1960s space race.

    2016ActionStrategy2.49 USDDeck PlayableSteam ↗

Reviewers mention these as similar to Half-Life: Source

Surfaced from review text: when other players write 'if you liked X, try Y', we catch the name and resolve it back to a Steam game.

  1. Dead Space

    WHY THIS

    Reviewers of Half-Life: Source cross-mention this title as a similar play. Shares Action with Half-Life: Source.

    The sci-fi survival-horror classic returns, completely rebuilt to offer an even more immersive experience — including visual, audio, and gameplay improvements — while staying faithful to the original game’s thrilling vision.

    2023ActionAdventure14.99 USDDeck PlayableSteam ↗
  2. Prey

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Reviewers of Half-Life: Source cross-mention this title as a similar play. Shares Action with Half-Life: Source.

    In Prey, you awaken aboard Talos I, a space station orbiting the moon in the year 2032. You are the key subject of an experiment meant to alter humanity forever – but things have gone terribly wrong. The space station has been overrun by hostile aliens and you are now being hunted.

    2017ActionAdventure29.99 USDDeck VerifiedSteam ↗
  3. Half-Life: Blue Shift

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Reviewers of Half-Life: Source cross-mention this title as a similar play. Shares Action with Half-Life: Source.

    Made by Gearbox Software and originally released in 2001 as an add-on to Half-Life, Blue Shift is a return to the Black Mesa Research Facility in which you play as Barney Calhoun, the security guard sidekick who helped Gordon out of so many sticky situations.

    2001Action4.99 USDDeck PlayableSteam ↗
  4. Half-Life 2

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Reviewers of Half-Life: Source cross-mention this title as a similar play. Shares Action with Half-Life: Source.

    Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

    2004Action9.99 USDDeck VerifiedSteam ↗
  5. Cry of Fear

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Reviewers of Half-Life: Source cross-mention this title as a similar play. Shares Action with Half-Life: Source.

    Cry of Fear is a psychological single-player and co-op horror game set in a deserted town filled with horrific creatures and nightmarish delusions. You play as a young man desperately searching for answers in the cold Scandinavian night, finding his way through the city as he slowly descends into madness.

    2013ActionIndieAdventureFreeSteam ↗
  6. Half-Life

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Reviewers of Half-Life: Source cross-mention this title as a similar play. Shares Action with Half-Life: Source.

    Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

    1998Action9.99 USDDeck VerifiedSteam ↗
  7. Garry's Mod

    WHY THIS

    Shares mod support and a nostalgic mood with Half-Life: Source.

    Reviewers of Half-Life: Source cross-mention this title as a similar play.

    Garry's Mod is a physics sandbox. There aren't any predefined aims or goals. We give you the tools and leave you to play.

    2006IndieSimulationCasual4.99 USDDeck PlayableSteam ↗
  8. Wolfenstein: The New Order

    WHY THIS

    Reviewers of Half-Life: Source cross-mention this title as a similar play. Shares Action with Half-Life: Source.

    Wolfenstein®: The New Order reignites the series that created the first-person shooter genre. Wolfenstein offers a deep game narrative packed with action, adventure and first-person combat.

    2014Action19.99 USDDeck VerifiedSteam ↗

Cheaper alternatives

Games in the same vein priced at least 40% below Half-Life: Source at current Steam store prices.

  1. Vampire Survivors

    WHY THIS

    Priced ~50% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    Mow down thousands of night creatures and survive until dawn! Vampire Survivors is a gothic horror casual game with rogue-lite elements, where your choices can allow you to quickly snowball against the hundreds of monsters that get thrown at you. Be the bullet hell!

    2022ActionIndieRPG4.99 USDDeck VerifiedSteam ↗
  2. Titanfall® 2

    WHY THIS

    Priced ~55% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    Respawn Entertainment gives you the most advanced titan technology in its new, single player campaign & multiplayer experience. Combine & conquer with new titans & pilots, deadlier weapons, & customization and progression systems that help you and your titan flow as one unstoppable killing force.

    2020Action4.49 USDDeck PlayableSteam ↗
  3. POSTAL 2

    WHY THIS

    Priced ~90% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    Live a week in the life of "The POSTAL Dude"; a hapless everyman just trying to check off some chores. Buying milk, returning an overdue library book, getting Gary Coleman's autograph, what could possibly go wrong?

    2012ActionIndieAdventure0.99 USDDeck VerifiedSteam ↗
  4. Buckshot Roulette

    WHY THIS

    Priced ~70% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    Play Russian roulette with a 12-gauge shotgun. Four enter. One leaves. Roll the dice with your life. Good luck!

    2024ActionIndieSimulation2.99 USDDeck PlayableSteam ↗
  5. Brotato

    WHY THIS

    Priced ~50% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    Brotato is a top-down arena shooter roguelite where you play a potato wielding up to 6 weapons at a time to fight off hordes of aliens. Choose from a variety of traits and items to create unique builds and survive until help arrives.

    2023ActionIndieRPG4.99 USDDeck VerifiedSteam ↗
  6. Your Only Move Is HUSTLE

    WHY THIS

    Priced ~50% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    Master your technique, execute flashy combos, and outsmart opponents across the world, frame-by-frame. Slow down the clock to fine-tune your fighting style in this innovative, turn-based combat simulator. Pulverize your friends and choreograph spectacular fight scenes. No training mode required.

    2023ActionStrategyIndie4.99 USDDeck PlayableSteam ↗
  7. Blood and Bacon

    WHY THIS

    Priced ~90% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    This Co-op Shooter , has Day and Night levels, multiple maps, players will take on 25 enemy types and numerous bosses, like Gargantuan Monsters and Minibosses every 10 days as you explore, shoot and run for your life against the onslaught of porcine monstrosities.

    2016ActionAdventureCasual0.99 USDSteam ↗
  8. Half-Life: Opposing Force

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Priced ~50% under Half-Life: Source on Steam right now. Shares Action with Half-Life: Source.

    Return to the Black Mesa Research Facility as one of the military specialists assigned to eliminate Gordon Freeman. Experience an entirely new episode of single player action. Meet fierce alien opponents, and experiment with new weaponry. Named 'Game of the Year' by the Academy of Interactive Arts and Sciences.

    1999Action4.99 USDDeck PlayableSteam ↗

Free alternatives

Free-to-play games that recommended players of this title also tend to enjoy.

  1. Doki Doki Literature Club!

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it.

    The Literature Club is full of cute girls! Will you write the way into their heart? This game is not suitable for children or those who are easily disturbed.

    2017IndieFree To PlayCasualFreeDeck PlayableSteam ↗
  2. Life is Strange - Episode 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Half-Life: Source.

    Episode 1 now FREE! Life is Strange is an award-winning and critically acclaimed episodic adventure game that allows the player to rewind time and affect the past, present and future.

    2015ActionAdventureFreeDeck PlayableSteam ↗
  3. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Half-Life: Source.

    Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!

    2018ActionIndieFree To PlayFreeSteam ↗
  4. ENA: Dream BBQ

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it.

    Experience surreal environments and inexplicable characters as ENA in a new wild world.

    2025IndieAdventureFreeDeck VerifiedSteam ↗
  5. Indigo Park: Chapter 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Half-Life: Source.

    Explore the abandoned childhood wonder of Indigo Park! Guided by Rambley the Raccoon, help restore power to the destroyed amusement park while you run from the reason it shut down.

    2024ActionIndieAdventureFreeDeck PlayableSteam ↗
  6. STRAFTAT

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Half-Life: Source.

    STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.

    2024ActionFreeDeck PlayableSteam ↗
  7. The Looker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it.

    You wake up, alone, on a strangely familiar island full of puzzles that will frustrate and annoy you.

    2022IndieFreeDeck PlayableSteam ↗
  8. Counter-Strike:Global Offensive

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Action with Half-Life: Source.

    Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).

    2012ActionFree To PlayFreeDeck PlayableSteam ↗

More from Valve

Other recommendable Steam games by Valve, ranked by review count so the studio's hits land first.

  1. Counter-Strike 2

    WHY THIS

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    For over two decades, Counter-Strike has offered an elite competitive experience, one shaped by millions of players from across the globe. And now the next chapter in the CS story is about to begin. This is Counter-Strike 2.

    2012ActionFree To PlayFreeDeck PlayableSteam ↗
  2. Left 4 Dead 2

    WHY THIS

    Shares mod support and a nostalgic mood with Half-Life: Source.

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    Set in the zombie apocalypse, Left 4 Dead 2 is a co-operative action horror FPS takes you and your friends through the cities, swamps and cemeteries of the Deep South, from Savannah to New Orleans across five expansive campaigns.

    2009Action9.99 USDDeck VerifiedSteam ↗
  3. Portal 2

    WHY THIS

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    The "Perpetual Testing Initiative" has been expanded to allow you to design co-op puzzles for you and your friends!

    2011ActionAdventure9.99 USDDeck VerifiedSteam ↗
  4. Half-Life 2

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    Reawakened from stasis in the occupied metropolis of City 17, Gordon Freeman is joined by Alyx Vance as he leads a desperate human resistance. Experience the landmark first-person shooter packed with immersive world-building, boundary-pushing physics, and exhilarating combat.

    2004Action9.99 USDDeck VerifiedSteam ↗
  5. Portal

    WHY THIS

    Shares an unsettling mood with Half-Life: Source.

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    Portal™ is a new single player game from Valve. Set in the mysterious Aperture Science Laboratories, Portal has been called one of the most innovative new games on the horizon and will offer gamers hours of unique gameplay.

    2007Action9.99 USDDeck VerifiedSteam ↗
  6. Counter-Strike

    WHY THIS

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    Play the world's number 1 online action game. Engage in an incredibly realistic brand of terrorist warfare in this wildly popular team-based game. Ally with teammates to complete strategic missions. Take out enemy sites. Rescue hostages. Your role affects your team's success. Your team's success affects your role.

    2000Action9.99 USDDeck PlayableSteam ↗
  7. Counter-Strike: Source

    WHY THIS

    Shares a nostalgic mood with Half-Life: Source.

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    Counter-Strike: Source blends Counter-Strike's award-winning teamplay action with the advanced technology of Source™ technology.

    2004Action9.99 USDDeck PlayableSteam ↗
  8. Half-Life

    WHY THIS

    Shares an atmospheric mood with Half-Life: Source.

    Another title from Valve, the studio behind Half-Life: Source. Shares Action with Half-Life: Source.

    Named Game of the Year by over 50 publications, Valve's debut title blends action and adventure with award-winning technology to create a frighteningly realistic world where players must think to survive. Also includes an exciting multiplayer mode that allows you to play against friends and enemies around the world.

    1998Action9.99 USDDeck VerifiedSteam ↗

Frequently asked about Half-Life: Source

Does Half-Life: Source run on Steam Deck?
Half-Life: Source is rated Playable on Steam Deck — it runs, but expect some manual adjustments (control remapping, text size, or graphics settings) for the best experience.
How much does Half-Life: Source cost?
Half-Life: Source is listed on Steam at 9.99 USD (current store price; Steam sales may reduce this temporarily).
What games are most similar to Half-Life: Source?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Half-Life: Source are Half-Life: Blue Shift, Half-Life: Opposing Force, Half-Life 2.
Who developed Half-Life: Source?
Half-Life: Source was developed by Valve.

imho.run ranks Steam game alternatives using a mix of collaborative filtering (ALS / iALS / EASE / LightGCN), content scoring over genres, categories, Steam tags, developers, and publishers, plus AI-extracted vibes mined from review text. The page above is generated in seed mode anchored on Half-Life: Source.

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