| 摘要 |
A method of advertising using a multiplayer game for a mobile device, comprising: transmitting/receiving data for executing the multiplayer game in the mobile device through a network channel; checking whether a user of the multiplayer game has paid to play the multiplayer game! and determining whether or not to display an advertisement on a screen of the mobile device for the multiplayer game based on the check result and whether or not a free trial period has expired.
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