Security 51

Security guard simulation where suspicious visitors may not be human

Alawar · Released Aug 12, 2026

Reviews: Mostly Positive; 70% of 509
Recent reviews: Mixed; 66% of 39 in 30 days
Players: 16; daily peak, Oct 28, 2026
Steam Deck: Verified
Last update on Steam: 1 month ago; Sep 3, 2026
Minimum PC: RX 550; 8 GB RAM · 2 GB disk; Full requirements

What is Security 51?

You staff an elevator checkpoint in an underground Area 51 bunker in this single-player, point-and-click simulation. Across work shifts, you check documents and clearance levels, track people entering and leaving, and use tools such as blood tests to decide who passes or enters quarantine as you try to contain dangerous anomalies.

For you if...

+you enjoy careful observation and strict procedural puzzles
+you like science fiction horror with consequential decisions

Not for you if...

−you want fast-paced action instead of careful inspection work

What players say

70% of 509 reviews are positive · 66% of 39 in the last 30 days

Players praise the inspection mechanics, pixel art, and atmosphere. Common complaints concern repetition when pursuing additional endings, along with thin storytelling and underdeveloped characters.

Screenshots and trailer

Security 51 system requirements

Minimum: RX 550, 8 GB RAM, 2 GB of disk space.

As published by the developer.

Can my PC run Security 51?

Tell us your graphics card once and every game page will answer this for you.

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Minimum

OS: Windows 10 64 bit
Processor: Intel Core i5-6400 or analog
Graphics: AMD Radeon RX 550 or NVIDIA GeForce GTX 960
Memory: 8 GB RAM
Storage: 2 GB available space
Notes: Stay Hydrated

Does Security 51 have co-op or multiplayer?

No: single-player only, no multiplayer modes declared.

Single-player

Does Security 51 run on Steam Deck?

Verified Yes, Verified by Valve: it works on Steam Deck out of the box.

All functionality is accessible with the default controller configuration
Shows Steam Deck controller icons
In-game text is legible on Steam Deck
Default graphics settings perform well on Steam Deck

PC version details

DRM: None declared on Steam
Controller: Full controller support
Platforms: Windows, macOS
Achievements: 68
Steam features: Cloud saves, Family Sharing, Trading cards
Languages: Text only: English, Simplified Chinese, Russian, French, German, Spanish - Spain, Traditional Chinese, Polish, Portuguese - Brazil, Japanese.

Does Security 51 use AI-generated content?

No AI-generated content is disclosed on the game's Steam page.

Self-reported by the developer under Steam rules: it covers AI content that ships in the game, not tools used to make it. Steam page checked on Oct 27, 2026. How to filter AI games on Steam