Echochrome is a 2008 puzzle game created by Sony's Japan Studio and Game Yarouze for PlayStation 3 from the PlayStation Store and for PlayStation Portable (PSP). The gameplay involves a mannequin figure traversing a rotatable world where physics and reality depend on perspective. The world is occupied by Oscar Reutersvärd's impossible constructions. This concept is inspired by M. C. Escher's artwork, such as "Relativity". The game is based on the Object Locative Environment Coordinate System developed by Jun Fujiki—an engine that determines what is occurring based on the camera's perspective. Echochrome received a spin-off in 2009 titled Echoshift and a sequel, Echochrome II for the PlayStation 3 utilizing the PlayStation Move in December 2010.