Impossible cube ambiguity present in a Necker cube illustration, in which a cube is drawn with its edges as line segments, and can be interpreted as being in either of two different three-dimensional orientations. An impossible cube is usually rendered as a Necker cube in which the line segments representing the edges have been replaced by what are apparently solid beams. In Escher's print, the top four joints of the cube, and the upper of the two crossings between its beams, match one of the two interpretations of the Necker cube, while the bottom four joints and the bottom crossing match the
Curiosity: What's Inside the Cube? You're not just doing things in the cube. You don't realise it but you're doing something in something else as well at the same time." Peter Molyneux claimed that "what is inside the cube is life-changingly amazing by any definition". Critics stated that the game designer might be over-promising. When it was suggested to him that he should "tone down the enthusiasm", he responded: "I don’t want to believe less in something. I want to make something that is worthy of the emotion behind it." "Curiosity" was one of the few games that could be successfully played by a simple