Dupery: A Game of Solo Deduction launches on Steam on October 15, 2026. The detective game is developed by Gilded Rune Games and published by Yogscast Games, which confirmed the date on October 9, 2026.
Players in the game’s Discord community solved an alternate reality game (ARG) tied to the launch, which unlocked a 20% Steam discount that applies when the game goes live.
Source: Inven Global, Oct. 9, 2026
Image: Magnifying glass by Niabot, CC BY-SA 3.0, via Wikimedia Commons.