That's Not My Neighbor is a suspense-based inspection game that challenges players to rely on attention to detail, logical thinking, and calm decision-making. Players act as building gatekeepers, verifying visitors' credentials through checking and comparing their looks, and even noticing slight differences that may indicate the entrance of a dangerous impersonator. The game is played at a constant but increasingly stressful pace, with every decision to open or close the door resulting in consequences. With its creepy environment, simple graphics, and intense psychological tension, the game is distinguished as a skill-based experience that emphasizes observing rather than reacting, offering a lot of replay value through different encounters and endings.