Single-player games like Security 51
Below are 16 single-player Steam games similar to Security 51, ranked by player overlap. Every pick carries Steam's Single-player category, so multiplayer-only titles or always-online games don't sneak in. imho.run pulls the category data from Steam directly — Single-player here matches what the store labels.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Security 51 page.
Ranked picks
- 1
The Operator
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 2
Kathy Rain 2: Soothsayer
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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…
- 3
Broken Sword 5 - the Serpent's Curse
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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...
- 4
Kathy Rain: Director's Cut
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 5
The Dark Side of the Moon: An Interactive FMV Thriller
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 6
The Case of the Golden Idol
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 7
Pyramids and Aliens: Escape Room
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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!
- 8
Broken Sword - Shadow of the Templars: Reforged
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 9
Wall World
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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?
- 10
Necrosmith
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 11
Beholder: Conductor
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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!
- 12
Karate Survivor
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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!
- 13
Wall World 2
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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!
- 14
Necrosmith 2
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 15
They Always Run
Single-player alternative to Security 51 — playable solo, no multiplayer required. 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.
- 16
The Happy Hereafter
Single-player alternative to Security 51 — playable solo, no multiplayer required.
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!