Professor Sherlock's experiment went wrong… Instead of sending you back in time, he brought the famous writer Jules Verne back to our time! The man of boundless imagination has decided that he will not leave until you have accepted his extraordinary challenge. Solve his puzzles and enter his creative world, brought to life on the Île de Nantes to help Sherlock send Jules Verne back to the 19th century. The game starts when you start the chat with the chatbot. After giving him your access code, he will give you the details of your mission. You can then go on an adventure and walk the streets in search of clues. Observe your surroundings, solve puzzles, and interact with your digital companion (as well as your teammates) to complete your quest. The necessary equipment : - A charged smartphone with internet access (1 / team mandatory - 1 / player recommended) - A notebook and pencil (1 / team)