To provide a game that encourages interaction between users forming a group and enhances bond between the users.

A server device 10 is disclosed which is connected to terminal devices 30 operated by the users via a communication network 20 to provide a game to the terminal devices. The server device 10 includes: a setting unit 51 for setting, to each of the users belonging to the group, a prescribed event as a specific event from a plurality of events; and a notification unit 54 for notifying, on the occurrence of the specific event to an object user belonging to the group, the fact that the specific event has occurred, to the terminal device of at least one of the users belonging to the group, regardless of the intention of the object user.