Information processing device

PROBLEM TO BE SOLVED : To provide a game including lottery processing in which it is possible to easily realize that a rare content acquisition probability increases as lottery processing is repeated, and a motivation to repeatedly challenge the lottery processing increases. SOLUTION : An information processing device includes : a table management part for storing a table in which each of a plurality of choices is discriminated as either acquirable or unacquirable, and a kth content is assigned to each of the plurality of choices; a presentation part for presenting to a user terminal at least part of the information on the plurality of choices and information on the number of the kth contents assigned to the acquirable choices of the plurality of choices; and a lottery processing part for reading out the table from the table management part every time an acquisition request for any one choice of the plurality of choices is received from the user terminal, granting an mth content assigned to the choice for which the acquisition request is made by the user to the user in the table, and updating the choice for which the acquisition request is made by the user to be unacquirable in the table. SELECTED DRAWING : Figure 6 COPYRIGHT : (C)2018, JPO&INPIT