Doubles is a video game concept with an aesthetic inspired by Art Nouveau. It is a fantasy murder mystery, in which the player controls a customizable wandering adventurer who comes to a large town where several people are going missing or turning up dead. At the behest of the townspeople, the player then has to explore the town, picking up clues and trying to discover the culprit… or culprits. The secret? The town is infested with shapeshifters, who take the form of humans to infiltrate their societies.