That's not my Neighbor is a 2D job simulator and indie horror game created by Nacho Sama. In the year 1955, monsters with the ability to mimic humans called doppelgangers have become an everyday problem. As the new doorman of your apartment building it is your job to discern sneaky doppelgangers who wish to infiltrate from regular tenants just looking to go home. Check their documents carefully, pay attention to their appearance, call the tenants to clarify information. Should you fail, both you and the humans are going to be on the menu!