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In That’s Not My Neighbor: Nightmare Update, you’re tasked with a job that seems simple but hides dangerous complexity: controlling who gets access to the building. As a doorman, you’ll face neighbors and strangers alike, but among them lurk doppelgangers—entities that mimic humans down to the finest detail. Your mission is to spot these impostors by examining documents, comparing faces, and catching inconsistencies in their stories. One mistake could mean letting in a threat that endangers everyone inside.
The Nightmare Update elevates the difficulty, introducing faster-paced gameplay and more deceptive doppelgangers. New mechanics challenge you to stay sharp under pressure, with quick decision-making becoming essential for survival. In addition to standard ID checks, players will navigate unexpected twists, such as corrupted documents and visually distorted intruders, making it even harder to separate real residents from disguised threats.
Every decision you make affects the game’s multiple endings. Granting access to the wrong person could spell disaster, while being too cautious might frustrate genuine residents. The update adds new storylines and secret events, encouraging multiple playthroughs to experience every possible scenario. Your attention to detail and ability to read between the lines will determine whether the building stays safe—or falls victim to the nightmare within.