Echochrome II (stylized as echochrome ii), released in Japan as Mugen Kairō: Hikari to Kage no Hako (無限回廊 光と影の箱), is a 2010 puzzle action game developed by SCE Japan Studio and published by Sony Computer Entertainment for the PlayStation 3 utilizing the PlayStation Move. The game is the sequel to the 2008 video game, Echochrome, and was released on December 21, 2010. The game's soundtrack holds the record for the longest piece of music ever composed for a video game, at one hour, fifteen minutes, and seven seconds.