A control method performed by a computer including a storage module and configured to control progress of a game played by a user registered in an application, includes storing, in the storage module, identification information of each of a plurality of users in association with registration information indicating whether the user is registered in the application, retrieving a game progress request including identification information of a first user from a first terminal device of the first user, determining whether or not the first user is registered in the application, transmitting display data for displaying a game screen used in the game to the first terminal device when the first user is registered in the application, and transmitting display data for displaying a registration screen for registering the first user in the application to the first terminal device, when the first user is not registered in the application.