The game lets players experience love with over 100 princes who live in the Kingdom of Dreams.
The game already inspired a series of web anime shorts last year.
The video previews moumoon’s opening theme song “Afureru Hikari” (Overflowing Light).
The official website for the television anime of GCREST’s 100 Sleeping Princes and the Kingdom of Dreams: The Animation (Yume Ōkoku to Nemureru 100-Nin no Ōji-sama) smartphone puzzle role-playing game revealed a promotional video, additional cast, and the opening theme song on Thursday.