Doppelganger

Doppelganger is a puzzle game released in March 2018 across PC, macOS, and Linux. The game has recently seen attention around Shift at Midnight, an apparent expansion or related content that introduces a customer-identification mechanic. Based on coverage, players must distinguish between human customers and doppelgangers while serving them, adding a classification puzzle layer to the core experience. The community has been seeking guides to help identify which customers are actually doppelgangers, suggesting this represents a meaningful challenge within the game's puzzle structure.