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.
Modeled estimate, not a reported figure. How we estimate →
Security 51 is an atmospheric security guard simulator inspired by Papers, Please, and SCP paranoia. You're on duty in the underground bunker of Area 51, where the most dangerous part begins at the elevator: the shaft descends for miles down to unknown levels. Whether it's laboratories, anomalies, inhumane experiments, or something alien—you're not supposed to know. Your task is simple: let in those who have access and stop those who don't... even if everything looks "right" on the surface.
Everyone who passes through your checkpoint carries papers and passes. Your job is to check names, positions, clearance levels, and time, ensuring the number of people entering and leaving matches, and pay attention to any oddities. As time passes you'll catch yourself thinking that something's wrong more and more, and the only thing to rely on will be the protocols. But even they can be wrong.
With experience, you'll gain increasingly more accurate methods of identity verification, such as blood testing. Did that janitor simply open the wrong door, or are they a spy for an enemy government? Or are they not even human? When in doubt, quarantine the suspect. Sometimes you'll make mistakes and lock up an ordinary employee, and sometimes you'll find a titanium cell ripped open from the inside. Some decisions will have immediate consequences, others only after several shifts.
The consequences of every mistake go far beyond issues in the workplace. Let the wrong person out, and the infection will ravage the city. Isolate suspicious employees, investigate anomalies, and launch new operations to contain the threat before it's too late.
Remember, it's not just about who you let in, but who or what you let out into the world.
Genres
Stats
All-time low is the lowest price we've recorded for this game since we started tracking it.
Add-ons
Each DLC is estimated with the same model as a game, then summed — a modeled figure, not reported DLC sales.
Sums Steam only; GOG, Epic publish no volume signal, so the true total is higher by an unknown amount.
Engagement
Reviews
Themes across 363 recent reviews and how positive each mention is. A keyword signal, not full sentiment analysis.
Reviews
cool game ig
Excelente
So the game is fun and the negative reviews dont do it justice because the game is great. Gameplay is fun but the story is weak probably because a good story wasn't really promised. I personally will go for as many achievements as i can because i think game to me is good, fulfilling and its fun mechanics like blood sampling are really cool
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Languages: English, Simplified Chinese, Russian, French, German, Spanish - Spain, Traditional Chinese, Polish, Portuguese - Brazil, Japanese
| $9.99 |
| — |
| — |
| #49 |
| not modelled |
Matched by title — a reused name can pair the wrong games. * is a critic aggregate. Prices and positions are each store's United States storefront; Epic charts worldwide. Audience and Score too, except Steam's, which is worldwide.
Hours played at review time, across 363 reviews with recorded playtime.
positive critical· bar length = how often the theme comes up
That was a nice game to play, but it tends to be really tedious and sometimes boring if you want the final ending (this one being, for my part, satisfying to finally get and a little bit disappointing because of the lack of answers). Still enjoyed most of my time playing it.
The game is good, very good...Until u reach the F**** branches, from that point it will be a hell, Tried to rerun, making different choices, nothing happened, stuck at day 31 without exactly knowing why...fix that branches stuff and it will be a 10/10 game. Paper please but with aliens.
Check rules. Check documents. Scan. Allow/Deny. Repeat. Conduct experiment. Deploy team. Fight anomalies. Repeat. Great game. A lot of pop culture and game references. I am hooked.
Yes.
Solid game with good looking pixel art style design!! This plays like a scifi papers please and I'm all for it. I think the game does a good job of setting out the daily rule changes so that it is challenging but fair, while keeping the playthrough from feeling too repetitive. Strongly recommend trying this one out if you are a fan of puzzle simulation games with a pixel are style!
Good ♥♥♥♥!
A game similar to Papers Please (the developer also mention that one of the game they weren inspired from was Papers Please). You get to inspect the people in the elevator, even take blood to check the cells. It adds so much without being overwhelming, I was actually worried that I needed to do an absurd amount of multitasking and that it will be overwhelming, but no, it isn't like that. Even though it has sooo many things to look out for, the rules for each day make it so you wont have to check every single thing you unlocked, only 2 or 3 at max. Im having a lot of fun playing this game. It's a must buy for people who love games like Quarantine Zone and Papers Please!
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Active players
Estimated daily and monthly active players (DAU/MAU) modeled from peak concurrency.
Players by region
Where this game's players are, estimated from review languages.
Players also reviewed
The games this title's players most often review too — audience affinity.
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