| 摘要 |
<p>PROBLEM TO BE SOLVED: To lift restriction on play at timing of players themselves for game data in that the play is restricted.SOLUTION: An unlock challenge is started to a music piece in a locked state to play the music piece. When a play result satisfies predetermined clear conditions, unlock points are acquired. When the total of the acquired unlock points meets a criterion, a state of the music piece is set to lifting. Thus, a player can set the music piece to be in a lifted state at own timing.</p> |
