| 摘要 |
<p>PROBLEM TO BE SOLVED: To continuously play a game between client devices.SOLUTION: Each client device transmits an acquisition request of which input is accepted, and writes situation information and a revision number, which are received from a server device, in second storage means. The client device advances a game after restoring a situation of the game on the basis of the situation information in the second storage means. The client device, during the progress of the game, transmits an update request including the situation information showing a current situation of the game and account information and the revision number in the second storage means, to the server device, on the basis of an instruction of which the input is accepted. The server device determines whether or not the revision number retrieved from first storage means is coincident with the revision number in the update request, on the basis of the account information in the update request. When both revision numbers are determined to be coincident with each other, the server device updates the revision number and situation information in the first storage means on the basis of the update request; however, when they are determined not to be coincident, it cancels the update request.</p> |
