That’s Not My Neighbor is a tense horror simulation game that places you in the role of a doorman working at an apartment building in 1955. At first glance, the job seems simple: check residents and let them in. However, things quickly turn disturbing as doppelgangers begin to appear, perfectly imitating the people who live there.

The core gameplay focuses on observation and decision-making. You must carefully inspect documents, facial features, behavior, and subtle inconsistencies to determine whether a visitor is a real resident or a dangerous impostor. One wrong decision can have terrifying consequences, making every interaction feel stressful and important.

With its retro setting, eerie sound design, and dark visual style, That’s Not My Neighbor builds a constant sense of paranoia and suspense. The game challenges your attention to detail and nerves, offering a unique horror experience where fear comes not from jump scares, but from the unsettling feeling that something is always wrong.