IMHO.

Games like Half-Life and Garry's Mod

Looking for games like both Half-Life and Garry's Mod? Below are 24 Steam games ranked by imho.run's hybrid recommender for players who enjoy both titles. Each pick is scored by combining collaborative filtering across millions of Steam libraries — players who own Half-Life and Garry's Mod also tend to own these — with content overlap on genres, categories, and storefront tags, plus review-mined vibe embeddings that catch tonal similarity even when genre labels differ. No Steam login required.

Half-Life — Steam game coverGarry's Mod — Steam game cover

Best matches for fans of both games

Ranked by collaborative filtering, genre overlap, and review-mined vibes — the same signals that power imho.run.

  1. 1
    Half-Life 2 — Steam game cover

    Half-Life 2

    Top pick for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    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.

    ActionDeck VerifiedSteam ↗
  2. 2
    Black Mesa — Steam game cover

    Black Mesa

    Second pick for fans of both Half-Life and Garry's Mod. Shares Action and Indie with both games.

    Relive Half-Life.

    ActionIndieAdventureDeck PlayableSteam ↗
  3. 3
    Left 4 Dead 2 — Steam game cover

    Left 4 Dead 2

    Third pick for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    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.

    ActionDeck VerifiedSteam ↗
  4. 4
    Half-Life: Alyx — Steam game cover

    Half-Life: Alyx

    Ranked #4 for fans of both Half-Life and Garry's Mod. Shares Action and Adventure with both games.

    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.

    ActionAdventureSteam ↗
  5. 5
    Serious Sam HD: The Second Encounter — Steam game cover

    Serious Sam HD: The Second Encounter

    Ranked #5 for fans of both Half-Life and Garry's Mod. Shares Action and Indie with both games.

    Serious Sam HD: The Second Encounter is a visually upgraded and fully Steam supported remake of the original high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Month!

    ActionIndieSteam ↗
  6. 6
    Counter-Strike — Steam game cover

    Counter-Strike

    Ranked #6 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    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.

    ActionDeck PlayableSteam ↗
  7. 7
    Arma 3 — Steam game cover

    Arma 3

    Ranked #7 for fans of both Half-Life and Garry's Mod. Shares Action and Strategy with both games.

    Experience true combat gameplay in a massive military sandbox. Deploy with a wide variety of single- and multiplayer content, a massive arsenal of modern weapons and vehicles, and limitless opportunities for content creation. Authentic, diverse, open - Arma 3 sends you to war.

    ActionStrategySimulationSteam ↗
  8. 8
    Rust — Steam game cover

    Rust

    Ranked #8 for fans of both Half-Life and Garry's Mod. Shares Action and Indie with both games.

    The only aim in Rust is to survive. Everything wants you to die - the island’s wildlife, other inhabitants, the environment, and other survivors. Do whatever it takes to last another night.

    ActionIndieAdventureSteam ↗
  9. 9
    Quake — Steam game cover

    Quake

    Ranked #9 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    Developed by the award-winning id Software, Quake® is the ground-breaking, original dark fantasy first-person shooter that inspires today’s retro-style FPS games. With Quake (Enhanced), experience the authentic, updated, and visually enhanced version of the original.

    ActionDeck VerifiedSteam ↗
  10. 10
    Counter-Strike: Source — Steam game cover

    Counter-Strike: Source

    Ranked #10 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

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

    ActionDeck PlayableSteam ↗
  11. 11
    Left 4 Dead — Steam game cover

    Left 4 Dead

    Ranked #11 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    From Valve (the creators of Counter-Strike, Half-Life and more) comes Left 4 Dead, a co-op action horror game for the PC and Xbox 360 that casts up to four players in an epic struggle for survival against swarming zombie hordes and terrifying mutant monsters.

    ActionDeck PlayableSteam ↗
  12. 12
    Half-Life: Blue Shift — Steam game cover

    Half-Life: Blue Shift

    Ranked #12 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    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.

    ActionDeck PlayableSteam ↗
  13. 13
    Team Fortress 2 — Steam game cover

    Team Fortress 2

    Ranked #13 for fans of both Half-Life and Garry's Mod. Shares Action and Free To Play with both games.

    Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats!

    ActionFree To PlayFreeDeck PlayableSteam ↗
  14. 14
    Portal 2 — Steam game cover

    Portal 2

    Ranked #14 for fans of both Half-Life and Garry's Mod. Shares Action and Adventure with both games.

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

    ActionAdventureDeck VerifiedSteam ↗
  15. 15
    Blood: Refreshed Supply™ — Steam game cover

    Blood: Refreshed Supply™

    Ranked #15 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    Things are about to get… bloody! Soak up 42 pulse-pounding levels dripping with Lovecraftian atmosphere as you battle your way through armies of sycophantic cultists, zombies, gargoyles, hell hounds, and other insatiable horrors, in your quest to defeat the loathsome Tchernobog.

    ActionDeck PlayableSteam ↗
  16. 16
    Serious Sam Classic: The First Encounter — Steam game cover

    Serious Sam Classic: The First Encounter

    Ranked #16 for fans of both Half-Life and Garry's Mod. Shares Action and Indie with both games.

    Serious Sam is a high-adrenaline single-play and 16-player co-operative arcade-action FPS and Gamespot's Game of the Year 2001!

    ActionIndieSteam ↗
  17. 17
    Deep Rock Galactic — Steam game cover

    Deep Rock Galactic

    Ranked #17 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    Deep Rock Galactic is a 1-4 player co-op FPS featuring dwarven space miners, procedurally-generated destructible environments, and endless hordes of alien monsters. Explore cave systems, mine for minerals, and work together to survive!

    ActionDeck PlayableSteam ↗
  18. 18
    Half-Life: Opposing Force — Steam game cover

    Half-Life: Opposing Force

    Ranked #18 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    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.

    ActionDeck PlayableSteam ↗
  19. 19
    Insurgency: Sandstorm — Steam game cover

    Insurgency: Sandstorm

    Ranked #19 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    Insurgency: Sandstorm is a hardcore tactical FPS built on lethal close-quarters combat and ruthless intensity. Every bullet count, every step matters, and teamwork is your only path to survival in the brutality of modern warfare.

    ActionDeck PlayableSteam ↗
  20. 20
    DOOM Eternal — Steam game cover

    DOOM Eternal

    Ranked #20 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    Hell’s armies have invaded Earth. Become the Slayer in an epic single-player campaign to conquer demons across dimensions and stop the final destruction of humanity. The only thing they fear... is you.

    ActionDeck PlayableSteam ↗
  21. 21
    Unreal Tournament 3 — Steam game cover

    Unreal Tournament 3

    Ranked #21 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    Now includes the free Titan Pack expansion! The Titan Pack gives players a substantial amount of enhanced features and new content, including many original environments, new gametypes, the namesake Titan mutator, powerful deployables and weapons, new characters, and the Stealthbender.

    ActionDeck PlayableSteam ↗
  22. 22
    Half-Life: Source — Steam game cover

    Half-Life: Source

    Ranked #22 for fans of both Half-Life and Garry's Mod. Shares Action with both games.

    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.

    ActionDeck PlayableSteam ↗
  23. 23
    BioShock™ — Steam game cover

    BioShock™

    Ranked #23 for fans of both Half-Life and Garry's Mod. Shares Action and RPG with both games.

    BioShock is a shooter unlike any you've ever played, loaded with weapons and tactics never seen. You'll have a complete arsenal at your disposal from simple revolvers to grenade launchers and chemical throwers, but you'll also be forced to genetically modify your DNA to create an even more deadly weapon: you.

    ActionRPGDeck PlayableSteam ↗
  24. 24
    Crysis® 3 — Steam game cover

    Crysis® 3

    Ranked #24 for fans of both Half-Life and Garry's Mod. Shares Action and Strategy with both games.

    The fate of the world is in your hands. New and old enemies threaten the peace you worked so hard to achieve 24 years ago. Your search for the Alpha Ceph continues, but this time you'll also need to expose the truth behind the C.E.L.L. corporation.

    ActionStrategyAdventureDeck PlayableSteam ↗

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