Security 51
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.
Core experience hinges on fear, uncertainty, and high-stakes containment decisions as you descend into Area 51. The horror is integral to the intended play (suspense, vulnerability, not knowing who or what is human) but the game remains a procedural/security-simulation at its core, with exploration/choice rather than pure fright.
Best for players looking for a scary, atmosphere-heavy, stealth-focused, light on combat and low-gore horror experience.
Games with a similar horror experience.