Echochrome is a puzzle game developed by Sony Computer Entertainment. The game is set in a world made entirely of shadows. Players must manipulate the shadows to create paths for a character to walk, using the world's unique physics. You can rotate and zoom the world, making it more challenging and fun. The game received critical acclaim, noted for its unique physics and challenging gameplay. This pre-owned PlayStation Portable (PSP) game is a classic for fans of puzzle games and is guaranteed to provide many hours of entertainment.