That's Not My Neighbor is a suspenseful horror puzzle game that combines observation, investigation, and decision-making into a unique experience. Set in an apartment building threatened by mysterious Doppelgangers, players take on the role of a security guard responsible for determining who can safely enter the building.

In That's Not My Neighbor, every visitor claims to be a resident, but not everyone is who they appear to be. Your job is to carefully inspect identification cards, entry permits, personal information, and physical features to uncover inconsistencies that may reveal a disguised impostor.

Gameplay revolves around checking documents, comparing records, answering phone calls, and making critical decisions. A single mistake can allow a dangerous Doppelganger inside, while falsely accusing an innocent resident can also have consequences. As the game progresses, the inspections become more challenging, requiring sharper observation skills and greater attention to detail.

Unlike traditional horror games that rely on constant jump scares, That's Not My Neighbor builds tension through uncertainty and psychological pressure. Every visitor presents a new mystery, forcing players to question what is real and what is not.

With its distinctive art style, detective-inspired gameplay, and atmosphere of constant suspicion, That's Not My Neighbor offers a memorable challenge for players who enjoy puzzle-solving, horror, and investigative experiences. Whether you're spotting forged documents or identifying subtle visual clues, every shift at the security desk becomes a test of logic, memory, and instinct.