Gree, Inc.

Peichao Yu

Kiyoto Suzuki

A non-transitory computer-readable storage medium storing a program configured to cause a terminal device to execute a game in communication with a server device, the program includes: a first storing step of receiving from the server device at least one token generated and stored in the server device to store the token in a terminal storage unit; a transmitting step of transmitting to the server device information-to-be-transmitted including an updating instruction of game data of a user and encrypted information obtained by encrypting information-to-be-encrypted at least including the token; and a deleting step of deleting the token stored in the terminal storage unit, wherein the updating instruction includes a first instruction to update the game data stored in the server device when the token extracted by decrypting the encrypted information and the token stored in the server device are matched.

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Tokyo, Japan

Peichao Yu