Shikigami no Shiro (式神の城, lit. Formula-God's Castle), released in North America under the title of Mobile Light Force 2 and in the PAL region as MLF2, is a 2001 shoot 'em up developed by Alfa System and is the first game in the Shikigami no Shiro series. It was originally released as an arcade game and later ported to the PlayStation 2, Xbox, and Microsoft Windows.