Castle Shikigami 2 (式神の城, Shikigami no Shiro II) is a vertical scrolling shooter arcade game developed by Alfa System for the Sega NAOMI arcade system board. It was subsequently ported in Japan to the Nintendo GameCube, and then later to Dreamcast, PlayStation 2, Xbox and Windows PCs. The game was released in North America on the PlayStation 2 by XS Games as Castle Shikigami 2, and in Europe as Castle Shikigami 2: War of the Worlds. XS Games also published the first game in the series in North America and Europe, but under the name of Mobile Light Force 2.