Chamonix-Sentinelles is an immersive role-playing game set in the Alps between 2030 and 2100. Participants, known as the Sentinels, collaborate to craft a collective narrative under the guidance of Laurent Monnet, the game master. This game delves into the consequences of changes in mountain landscapes, such as glacier retreat and collapsing cliffs. It was designed by Nicolas Nova, an anthropologist, Sabrina Calvo, a science fiction author, and Etienne Mineur, a designer.