Touhou Kikeijuu: Wily Beast and Weakest Creature is the seventeenth official installment of the Touhou Project. It was announced by ZUN on his personal blog on April 17, 2019, at 14:02 JST. A playable demo was released on May 5, 2019, at Reitaisai 16. The full version was released August 12, 2019, at Comiket 96.