Raiden IV is a vertically scrolling shooter developed by MOSS and released as an arcade video game in Japan in 2007. A home conversion was published for Xbox 360 in 2008. An updated arcade version was later released for Taito's NESiCAxLive digital distribution platform. Two more versions with new content were released: Raiden IV: OverKill for PlayStation 3 and Windows, and Raiden IV x MIKADO remix for Nintendo Switch, PlayStation 4, PlayStation 5, Windows, Xbox One, and Xbox Series X/S.