# 地下城

地下城提供时限性的挑战，玩家将进入一个单独的地点或领域，在一定的时间内打败怪物。会有个人和组队选项，以及无数的参与奖励。

### 代币结合

地下城系统是任务和挑战的子类，它还包含双向代币结合。代币可以通过按时完成规定的任务来获得，并且将有一个特殊的地下城类别，将提供独家的奖励，但将要求以代币支付入场费。某些地下城会根据玩家完成任务的难度和完成任务所需的时间奖励一定数量的魔法碎片。如果玩家在规定的时间内完成一些更高级别的地下城，也会奖励玩家Ukiyo代币。


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