Security 51
Work the checkpoint inside Area 51: verify identities, follow changing protocols, detect anomalies, investigate employees, and survive decisions that shape the outcome.
46
Published guides
10
Wiki sections
EN · ZH · JA · KO
Languages
2026
Current edition
Fast routes
Open the exact Security 51 guide you need
The homepage stays broad, while these links send ending and Steam searches to the focused page.
Built around real player questions
What this Security 51 wiki covers
Use this site during a real shift: verify identities, understand changing protocols, investigate suspicious employees, trace decisions, and plan ending or achievement runs.
Every guide has one clear job, a visible review date, and a direct next step.
Find the answer faster
Browse by game system
Pick the part of your run that is blocking you. Every section leads to focused, player-first guides.
Start here
Walkthrough
Walkthroughs, verification procedures, and practical shift guides.
View allRead the shift
Daily Rules
Daily rules organized by the evidence and action they require.
View allChoose your tool
Tools
Find the scanner, camera, or check that answers the current question.
View allIdentify the signal
Anomalies
Anomaly records connected to detection tools and responses.
View allTrace the outcome
Endings
Ending routes, branching decisions, and consequence guides.
View allKnow the people
Characters
Employee profiles and entities connected to investigations.
View allOpen the case
Cases
Fingerprint, blood testing, fake employee, and inspection guides.
View allComplete the run
Achievements
Achievement requirements, hidden goals, and efficient unlock routes.
View allAdvance research
Research
Treatments, exposures, tests, and research progression.
View allRun the operation
Field Operations
Facility objectives that connect screening to the wider outbreak.
View allWhat should I do?
Make the next decision faster
Use the employee checker for a quick evidence checklist, then open the relevant rules, tools, or anomaly record.
Freshness matters
Recently published and revised
Dates are visible before you open a guide, so stale advice is easier to spot.
Report for duty
Your first Security 51 shift
Learn the checkpoint
Start with the inspection loop, essential controls, and the information you must compare before making a decision.
Verify every identity
Check documents, clearance, appearance, scans, and contradictions instead of trusting one signal.
Track cases and anomalies
Connect suspicious employees and unusual incidents to the rules and evidence available on that shift.
Plan choices and endings
Review decision points and consequences before committing to a route or completion run.
Field manual
High-intent starting points
The guides players usually need before an inspection, investigation, ending route, or completion attempt.
Security 51 Shift Map Guide: Branches & Endings
Learn how the Security 51 Shift Map works, which branch indicators to follow, how to replay decisions, and how it connects choices to endings and achievements.
View guideSecurity 51 Bone MRI Guide: Sharp Bones & Certificates
A focused reference for bone MRI checks, Sharp Bone evidence, and medical certificate requests in Security 51.
View guideSecurity 51 Camera Anomalies & Photo Glitches
Find Security 51 camera anomalies, follow interference, distinguish scene glitches from document photo mismatches, and avoid incorrect photo penalties.
View guideSecurity 51 Phantom Hound Guide: Day 10 Camera
Find the Phantom Hound in Security 51 using camera interference, developed-photo evidence, the Day 10 Manual, and the active priority rule.
View guideSecurity 51 Choices, Branches & Consequences
Track verified Security 51 checkpoint choices, experiments, city operations, Shift Map branches, later consequences, endings, and achievements.
View guideSecurity 51 Achievements: All 68 & Unlock Guide
A verified Security 51 achievement guide covering all 68 Steam achievements, public unlock conditions, cumulative goals, hidden entries, and a practical 100% route.
View guideSecurity 51 Field Sections
Connected guide routes
Move from the quick answer to the next decision without returning to search.
Security 51 Walkthrough
Step-by-step help for security shifts, investigation progress, major decisions, and story advancement.
View allVerification Database
Identity checks, clearance verification, scanning procedures, and anomaly detection explained.
View allSecurity Rules
Practical procedures for allowing or denying access and evaluating suspicious situations.
View allChoices, Consequences & Endings
Important decisions, route consequences, and ending requirements for replay-focused players.
View allCases & Investigations
Suspicious employees, anomalies, and notable incidents organized for quick reference.
View allCharacters & Profiles
Confirmed character profiles connected to inspections, cases, and decisions.
View allAbout this one-game wiki
What is Security 51?
Security 51 is a science-fiction horror security simulator from Alawar. You work inside an Area 51 facility and decide who is allowed through by checking identities, permissions, equipment, and suspicious behavior.
The rules and threats escalate across shifts. This independent guide organizes practical answers around inspections, cases, employees, story decisions, achievements, and release information.
Developer
Alawar
Release
August 12, 2026
Platform
PC / Steam
Genre
Horror Simulation
Mode
Single-player
Core loop
Identity Verification
Security 51 FAQ
Quick answers before your next shift.
Ready for Your Next Shift?
Start with the walkthrough, then use the case, character, ending, and achievement sections when the facility gets harder to read.