What the treasure hunt consists in ? The treasure hunt has two steps. The first one takes place on this website during two weeks in october and grants access to the second step in Paris (in French only ; the second step is not mandatory).
You can already submit your answer to the first game by logging in. In order to play, you have to register, then login (password associated to your e-mail address). If you are not already registered, use the Register menu on the left. If you already participated in the past years, you may use use the same account.