Changyou.com released on May 5, 2017 during the Golden Week in Japan the Japanese version of the Lethe iOS music action game. This game is already available in English but only for the iOS users. The Japanese version is available for 240 Yen (with tax) while the English version is available for 1.99 USD.

This game is comes with beautiful illustrations and rich music contents in full HD but also works on 4K screens. The style of the game is like a picture book which is full with CG animations and events. In China the game will be available soon and already won the Best Graphics Award at Taipei Game Show.