A method for providing a game in which a plurality of missions is presented to a user device each time a certain period has elapsed from a server having a storage unit for storing user information relating to a plurality of users, includes the steps of generating a plurality of different missions for each of the plurality of users based on the user information stored in the storage unit, presenting a list of the generated missions for each of the users on the user device, and presenting an operational element for updating a mission included in the presented list to another mission regardless of the elapse of the period in accordance with the progress of presented missions.