Touhou Eiyashou ~ Imperishable Night (東方永夜抄 〜 Imperishable Night, lit. Eternal Night Vignette from the East) is the eighth official game of the Touhou Project scrolling shooter series by Team Shanghai Alice. It is the third Touhou game to be released specifically for the Windows operating system. It was first released in the 66th Comiket on August 15, 2004.