Security 51
Security 51 - Steam Charts & Historical Stats
You're a security officer deep within Area 51. Explore historical player activity and pricing for Security 51. Player-count data was last observed Sep 30, 2026.
Security 51 player count and price summary
- Current players
- Unavailable
- All-time peak
- 102
- 24-hour player change
- Unavailable
- Current US price
- $9.99
Player count last observed . Values marked unavailable are not estimated.
Media gallery 19 screenshots · 1 videos
Screenshots
Videos
Launch Trailer
Last Tracked Players
All-Time Peak
Estimated Owners
Game Insights
Buy Verdict
Decent deal at 0% off, but might drop further. Watch for better opportunities.
Update Momentum
17 patches and 17 news items in last 180 days. Latest patch effect size: 0.00.
Activity Heatmap
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Latest News
Endless Mode Update Out Now!
📝 UpdateSteam Deck Verified!
📝 UpdateMajor Update
📝 UpdateFuture Plans
📝 UpdateDay One Update
📝 UpdateSecurity 51 is LIVE NOW!
📝 UpdateLaunch Times & Prices
📝 UpdateRelease Date Update & Demo Results
📝 UpdatePrice History
System Requirements
- OS: Windows 10 64 bit
- Processor: Intel Core i5-6400 or analog
- Memory: 8 GB RAM
- Graphics: AMD Radeon RX 550 or NVIDIA GeForce GTX 960
- Storage: 2 GB available space
- Additional Notes: Stay Hydrated
- OS: OSX Big Sur 11.7.10 or newer
- Processor: Apple M1
- Memory: 8 GB RAM
- Storage: 2 GB available space
Additional Information
Player-to-Price Ratio
Current Pricing
Additional Information
Developer Analytics
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About This Game
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.
Detailed Description
A "SIMPLE" JOB
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.
SECURE, CONTAIN, PROTECT
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.
TOTAL CONTROL
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.
CONTAIN THE THREAT
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.