fairy circle

1. Game target:-At each level, you must help the fairy ( black circle) get the key, then bring him to the gate ( red circle).
   游戏的目标：-在每个级别，您必须帮助童话（黑圈）拿到钥匙，然后把他带到大门口（红色圆圈）。

noun

1. a ring of fungi marking the periphery of the perennial underground growth of the mycelium

   Synonym:    fairy ring