Echochrome is a puzzle game created by Sony's JAPAN Studio and Game Yarouze. 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.
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This game's actually pretty neat. The aesthetics and music are nice and the gameplay premise is really interesting for a puzzle game. The logic for the puzzle rules is really impressive to see in action with all the perspective-bending. Unfortunately, actually solving the puzzles is pretty tedious since it takes a lot of effort to line things up just right so they connect, and it's really easy to make a mistake and have to redo that process over and over again plus I'm a brainlet.
At the time, this stood large in my mind as one of the prime examples of Sony having the platforms to go for ambitious weird shit, and it was a mind bending concept that really appealed to me.
Looking at it now, it doesn't really live up to the promise of the concept. echochrome is very finnicky and often does not follow its own perspective tricks, completely ignoring the clever solution you just found.