In 1955, the Department of Imposter Detection (D.D.D.) desperately needs your help. Your new job? Become the doorman of a prestigious apartment complex. The problem? Shape-shifting, man-eating monsters are trying to infiltrate the building, and they look almost identical to the real residents. Welcome to That's Not My Neighbor, a game of brilliant deduction, extreme suspicion, and terrifying attention to detail.
Heavily inspired by the administrative horror film Papers, Please, That's Not My Neighbor is a 2D indie game that combines horror and puzzle elements, where your only weapons are your eyes, a rotary dial telephone, and a checklist.
You are the first and last line of defense for the building's residents. Your objective is simple in theory: let the normal people in and keep the imposters out. But when a monster perfectly mimics a resident's face—except for a missing mole or a slightly wider smile—the line between safety and death becomes terrifyingly thin. Let the right person in, and everyone sleeps safely. Let the imposter in, and you face deadly consequences.

To survive your shift, you must strictly adhere to D.D.D.'s security procedures. Every time someone approaches your window, you need to conduct a thorough investigation:
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