Abstract: A management device includes: an application manager that manages a set of application-related information related to target applications subject to management. A first information acquisitor acquires a first information transmitted from a terminal in response to that any target application included in the target applications executed by the terminal. A first information notifier transmits, to the terminal, a second information upon receipt of a request based on a first target application executed by the terminal. A second information indicates at least one target application for which the first information has not been acquired from the terminal by the first information acquisitor. A reward processor performs a reward-granting process, based on that a second target application, included in the at least one target application which is indicated by the second information transmitted by the first information notifier, has been executed by the terminal or has become executable by the terminal.

Abstract: A management device includes: a controller configured to control an invitation processing for introducing a first application from a first terminal of a first user to a second terminal of a second user. The first application and a second application have been executed in the first terminal. The first and second users are inter-related with respect to the second application. The controller further includes: an invitation request receiver configured to receive, from the first terminal of the first user, an invitation request information for inviting the second user to the first application; and an invitation notifier configured to transmit, to the second terminal of the second user, an invitation notification information that is based on the invitation request information for inviting the second user that has been received by the invitation request receiver.

Abstract: A game system includes a game progresser, a storage, a game reproducer, and a changer. The game progresser is configured to control game progress in accordance with a player's instruction information. The storage is configured to store a game-play-history of a first-player in accordance with a first instruction information of the first-player. The game reproducer is configured to reproduce a first game progress of the first player based on the game-play-history, during a second game progress progressed by the game progresser in accordance with a second instruction information of a second-player. The changer is configured to change at least one of: control on the first game progress of the first-player reproduced by the game reproducer; and control on the second game progress of the second-player to be progressed in accordance with the second instruction information, with reference to at least one of first and second player's game situations.

Abstract: A management device includes an application manager, an install notification acquisitor, a user information acquisitor, a reward granting manager, a reward granting manager, and a reward granting processor. The reward granting processor determines, based on a reward granting management information managed by the reward manager, whether or not the install notification acquisitor acquired the install notification information indicating that the reward granting application has been installed in a terminal.

Abstract: A management device includes: an application manager that manages a set of application-related information related to target applications subject to management. A first information acquisitor acquires a first information transmitted from a terminal in response to that any target application included in the target applications executed by the terminal. A first information notifier transmits, to the terminal, a second information upon receipt of a request based on a first target application executed by the terminal. A second information indicates at least one target application for which the first information has not been acquired from the terminal by the first information acquisitor. A reward processor performs a reward-granting process, based on that a second target application, included in the at least one target application which is indicated by the second information transmitted by the first information notifier, has been executed by the terminal or has become executable by the terminal.

Abstract: A management device includes: a controller configured to control an invitation processing for introducing a first application from a first terminal of a first user to a second terminal of a second user. The first application and a second application have been executed in the first terminal. The first and second users are inter-related with respect to the second application. The controller further includes: an invitation request receiver configured to receive, from the first terminal of the first user, an invitation request information for inviting the second user to the first application; and an invitation notifier configured to transmit, to the second terminal of the second user, an invitation notification information that is based on the invitation request information for inviting the second user that has been received by the invitation request receiver.

Abstract: A game system includes a game progresser, a storage, a game reproducer, and a changer. The game progresser is configured to control game progress in accordance with a player's instruction information. The storage is configured to store a game-play-history of a first-player in accordance with a first instruction information of the first-player. The game reproducer is configured to reproduce a first game progress of the first player based on the game-play-history, during a second game progress progressed by the game progresser in accordance with a second instruction information of a second-player. The changer is configured to change at least one of: control on the first game progress of the first-player reproduced by the game reproducer; and control on the second game progress of the second-player to be progressed in accordance with the second instruction information, with reference to at least one of first and second player's game situations.

Abstract: To provide a game device capable of increasing the unpredictability of a change given to an image displayed on a game screen and suitably expressing how the image returns to an original state. The present invention relates to the game device for displaying an image including a plurality of element images on the game screen. Each time a predetermined display restriction condition is satisfied, at least one of the element images displayed on the game screen is selected based on a random number and display of the selected element image is restricted. Moreover, sequence information indicating the order of the restriction of the display of the element image is stored by correlating it to the element image whose display is limited. The display restriction of the element image is reset based on the sequence information.