In video games and pixel art, "isometric" refers to some form of parallel projection (commonly, the form of dimetric projection with a 2:1 pixel ratio) where the viewpoint is rotated slightly to reveal other facets of the game environment than are typically visible from a top-down perspective or side view, thereby producing a three-dimensional effect. In almost all cases, however, the term "isometric" is misapplied; in true isometric projection, the representations of the x, y and z axes are strictly oriented 120° to each other, whereas in other views the angles may vary. The terms "3/4 perspective", "2.5D" and "pseudo-3D" are also commonly used, though these terms can possess alternate meanings as well.