The Musée des Égouts is Brussels' unique museum dedicated to the city's underground sewer network. This gamified audio experience, commissioned by the City of Brussels, places visitors in the role of a new recruit on their first day of training, guided through the tunnels by a seasoned colleague, solving puzzles, facing challenges, and uncovering the hidden life of the sewers.

Built on video game mechanics, the experience lets each visitor shape their own journey through the subterranean city. Demute delivered the concept, the scenario, sound design, voice recordings in ENG-FR-NL, and full audio mix.