Doppelganger or Neighbor Game is a thrilling horror simulation available on Android, where players take on the role of a security guard tasked with identifying doppelgangers in a retro world. This game blends detective elements with psychological horror to create a suspenseful experience that challenges players' attention to detail. With a focus on examining IDs and scrutinizing visitor behavior, players must navigate through a series of intense situations where each decision can have dire consequences.

The game features first-person gameplay with deep inspection mechanics, allowing players to verify documents and question residents. With retro 2D graphics inspired by classic horror games, players will encounter a progressively challenging environment as doppelgangers adapt to their methods. Multiple endings based on player choices add to the replayability, making it a gripping experience for fans of indie horror and simulation games.