Hollow Cube is a Rubik's Cube that has been made as hollow as possible. The pieces are held together by dovetail connections. Because the puzzle consists mainly of air, it is very affordable.
"I was thinking today about a puzzle, that I think would be right up your alley. A Rubik Cube but with words instead of colors. Kind of like a secrete message decoder. I was thinking it could be called a Wordbik Cube. Then to solve it you would really have to know what it's supposed to say when solved. " (Fri, 13 November 2009 17:54 GMT)