| 摘要 |
PROBLEM TO BE SOLVED: To provide a mahjong ball game machine capable of being adapted to various support demands of a beginner to the experienced. SOLUTION: The mahjong ball game machine includes an operation support selection means for selecting operation support contents supported by a game operation support means. The operation support contents are divided into a plurality of levels, and the operation support selection means may be configured to select one level from the plurality of levels. COPYRIGHT: (C)2009,JPO&INPIT
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