IMHO.

Games like Security 51

If Security 51 is your kind of game, the closest matches are The Operator, Kathy Rain 2: Soothsayer and Broken Sword 5 - the Serpent's Curse — picked from the ranked list below. 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.

Get personalized picks →

About Security 51: You're a security officer deep within Area 51. Scan the staff, verify clearances, and decide who can enter the elevator and who absolutely mustn't leave. The deeper you go, the less certain you are that anyone standing before you is still human.

2026IndieAdventureSimulationWindowsby Alawar
Security 51 — Steam game cover

Players who liked Security 51 also play

Steam players who put hours into Security 51 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. The Operator

    WHY THIS

    Top pick for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Security 51.

    Welcome to the FDI. As our newest Operator, your role is to use your detective skills to assist our field agents and investigate mysterious crimes. Use cutting-edge FDI software to dig for clues, solve puzzles, and uncover the truth.

    2024IndieAdventureSimulation13.99 USDDeck VerifiedSteam ↗
  2. Kathy Rain 2: Soothsayer

    WHY THIS

    Second-strongest match for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Security 51.

    In this point-and-click urban thriller, down-and-out private eye Kathy Rain will embark on her most dangerous case yet — the pursuit of the notorious serial killer known as the Soothsayer. Find clues, gather evidence, connect the dots, and confront the murderer before the hunter becomes the hunted…

    2025IndieAdventure19.99 USDDeck PlayableSteam ↗
  3. Broken Sword 5 - the Serpent's Curse

    WHY THIS

    Third-strongest match for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Adventure with Security 51.

    From multi-award winning Revolution Software comes the latest explosive episode in this classic series. Playing as intrepid American George Stobbart and sassy French journalist Nico Collard, you find yourself on the trail of a stolen painting – and a murderous conspiracy...

    2013Adventure24.99 USDDeck PlayableSteam ↗
  4. Kathy Rain: Director's Cut

    WHY THIS

    Ranked #4 for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Security 51.

    The award-winning point-and-click adventure returns in the Director's Cut with an extended story, additional puzzles, and new areas to explore. Witness the rise of an iconic detective as you uncover a dark and sinister truth hiding behind the calm exterior of a small rural town.

    2021IndieAdventure14.99 USDDeck VerifiedSteam ↗
  5. The Dark Side of the Moon: An Interactive FMV Thriller

    WHY THIS

    Ranked #5 for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Security 51.

    When his 2 young children vanish mysteriously throughout the night, it's up to single-dad Dean Hamilton to do what any good dad would do: Go to the end of the universe and bring them back home in this thrilling FMV/Interactive Movie.

    2021ActionIndieAdventure8.99 USDDeck PlayableSteam ↗
  6. The Case of the Golden Idol

    WHY THIS

    Ranked #6 for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Security 51.

    A new kind of detective game that allows you to think and investigate freely. Discover clues surrounding 12 strange and gruesome deaths and build your own theory. Pick your suspect, deduce the motive, unmask the awful truth.

    2022IndieAdventure17.99 USDDeck VerifiedSteam ↗
  7. Pyramids and Aliens: Escape Room

    WHY THIS

    Ranked #7 for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Adventure with Security 51.

    Embark on an archaeological adventure inside an ancient pyramid to find your missing mentor. As an intrepid explorer, solve puzzles, investigate clues, and unravel the pyramid's secrets. Spoiler: it was not built by humans!

    2024AdventureCasual12.99 USDDeck PlayableSteam ↗
  8. Broken Sword - Shadow of the Templars: Reforged

    WHY THIS

    Ranked #8 for Security 51 fans by collaborative filtering across millions of Steam libraries. Shares Indie and Adventure with Security 51.

    The classic multi-award winning adventure "Broken Sword - the Shadow of the Templars" returns with glorious 4K visuals and iconic remastered audio, pitching intrepid tourist George Stobbart and fearless journalist Nico Collard into a journey of perilous adventures and ancient conspiracies.

    2024IndieAdventureCasual29.99 USDDeck VerifiedSteam ↗

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. Shares Indie with Security 51.

    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 Adventure with Security 51.

    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. Helltaker

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Security 51.

    Helltaker is a short game about sharply dressed demon girls.

    2020IndieAdventureFree To PlayFreeDeck PlayableSteam ↗
  4. Ultimate Custom Night

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie with Security 51.

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

    2018ActionIndieFree To PlayFreeSteam ↗
  5. Bongo Cat

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Simulation with Security 51.

    Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?

    2025IndieSimulationMassively MultiplayerFreeDeck PlayableSteam ↗
  6. ENA: Dream BBQ

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Security 51.

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

    2025IndieAdventureFreeDeck VerifiedSteam ↗
  7. The Murder of Sonic the Hedgehog

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Simulation with Security 51.

    Sonic the Hedgehog...was murdered!? Get to the bottom of the mystery in this brand-new adventure!

    2023IndieSimulationFree To PlayFreeDeck PlayableSteam ↗
  8. Indigo Park: Chapter 1

    WHY THIS

    Free-to-play pick from the same recommendation pool — no purchase to try it. Shares Indie and Adventure with Security 51.

    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 ↗

More from Alawar

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

  1. Wall World

    WHY THIS

    Another title from Alawar, the studio behind Security 51. Shares Indie and Adventure with Security 51.

    Explore the mysterious Wall World on your giant robospider: mine for valuable resources, upgrade your equipment to fight off hordes of monsters, and discover exotic biomes in-between attacks. Will you be able to survive and learn the secrets of the Wall World?

    2023ActionStrategyIndie6.99 USDDeck VerifiedSteam ↗
  2. Necrosmith

    WHY THIS

    Another title from Alawar, the studio behind Security 51. Shares Indie and Adventure with Security 51.

    A necromancer simulator. Assemble the dead using different body parts while upgrading your tower, combine the abilities of the different fantastic races to fight your way through the hordes of enemies and overrun the ’chosen ones’. To tell the truth, the dead are pretty, uhm, dumb.

    2022StrategyIndieAdventure2.99 USDDeck PlayableSteam ↗
  3. Beholder: Conductor

    WHY THIS

    Another title from Alawar, the studio behind Security 51. Shares Indie and Adventure with Security 51.

    A Beholder series spin-off. Become a conductor of the Determination Bringer train: monitor passengers, report incidents, and carry out important Ministry assignments — whose level of secrecy depends only on your loyalty. And remember: mission success is very important to you!

    2025StrategyIndieAdventure13.99 USDDeck VerifiedSteam ↗
  4. Karate Survivor

    WHY THIS

    Another title from Alawar, the studio behind Security 51. Shares Indie with Security 51.

    Become a martial arts master in this survivor-like roguelite inspired by action movies of the ‘80s. Use your fists, feet, and the environment to fight off relentless thugs. Master powerful combos, enhance your skills, and remember: everything around you is a weapon!

    2024ActionIndieCasual4.99 USDDeck VerifiedSteam ↗
  5. Wall World 2

    WHY THIS

    Another title from Alawar, the studio behind Security 51. Shares Indie and Adventure with Security 51.

    The adventure in the mysterious world of the Wall continues! Pilot your robospider into its depths, uncover lost artifacts and technologies, upgrade your exosuit and spider, and battle the horrors lurking in the dark. Unravel the mysteries buried in the depths of the Wall!

    2025ActionStrategyIndie11.99 USDDeck VerifiedSteam ↗
  6. Necrosmith 2

    WHY THIS

    Another title from Alawar, the studio behind Security 51. Shares Indie and Adventure with Security 51.

    Like a dead man reanimated by dark sorcery, the necromancer simulator is back! Give the undead the ability to fly over mountains and swim across rivers, explore a fully generated world at night and fend off enemy hordes during the day. Start a new, uhm, life.

    2024StrategyIndieAdventure7.99 USDDeck PlayableSteam ↗
  7. They Always Run

    WHY THIS

    Another title from Alawar, the studio behind Security 51. Shares Adventure with Security 51.

    Become Aiden, a three-armed mutant who hunts the most dangerous bounties in the galaxy. Catch, slice, dice and destroy enemies in this exciting 2D platformer with a space-western setting.

    2021ActionAdventure9.99 USDDeck PlayableSteam ↗
  8. The Happy Hereafter

    WHY THIS

    Another title from Alawar, the studio behind Security 51.

    Welcome to The Happy Hereafter, a casual sim in which you guide the newly dead as they build an afterlife for themselves and their fellow lost souls. There will be no rest for the wickedly funny as you put them to work building a village to rival Paradise!

    2014StrategyCasual3.99 USDSteam ↗

Plays great on Steam Deck

Valve-Verified or Playable picks from the similar pool — ready to go on Deck out of the box.

  1. The Operator

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Indie and Adventure with Security 51.

    Welcome to the FDI. As our newest Operator, your role is to use your detective skills to assist our field agents and investigate mysterious crimes. Use cutting-edge FDI software to dig for clues, solve puzzles, and uncover the truth.

    2024IndieAdventureSimulation13.99 USDDeck VerifiedSteam ↗
  2. Kathy Rain: Director's Cut

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Indie and Adventure with Security 51.

    The award-winning point-and-click adventure returns in the Director's Cut with an extended story, additional puzzles, and new areas to explore. Witness the rise of an iconic detective as you uncover a dark and sinister truth hiding behind the calm exterior of a small rural town.

    2021IndieAdventure14.99 USDDeck VerifiedSteam ↗
  3. The Case of the Golden Idol

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Indie and Adventure with Security 51.

    A new kind of detective game that allows you to think and investigate freely. Discover clues surrounding 12 strange and gruesome deaths and build your own theory. Pick your suspect, deduce the motive, unmask the awful truth.

    2022IndieAdventure17.99 USDDeck VerifiedSteam ↗
  4. Broken Sword - Shadow of the Templars: Reforged

    WHY THIS

    Deck Verified — runs on Steam Deck out of the box. Shares Indie and Adventure with Security 51.

    The classic multi-award winning adventure "Broken Sword - the Shadow of the Templars" returns with glorious 4K visuals and iconic remastered audio, pitching intrepid tourist George Stobbart and fearless journalist Nico Collard into a journey of perilous adventures and ancient conspiracies.

    2024IndieAdventureCasual29.99 USDDeck VerifiedSteam ↗

Frequently asked about Security 51

What games are most similar to Security 51?
Based on Steam play patterns and shared genres/tags, the games most often recommended alongside Security 51 are The Operator, Kathy Rain 2: Soothsayer, Broken Sword 5 - the Serpent's Curse.
Who developed Security 51?
Security 51 was developed by Alawar.

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 Security 51.

For library-aware picks tuned to your specific taste, sign in with Steam on the home page.

28 Games Like Security 51 — Ranked for 2026 · imho.run