Cubeword is a crossword style game. The game consists of 25 letter cubes packed into a plastic carry case. 24 of the cubes have letters on 5 faces, with one side left blank, with the last cube bearing the numbers 1-6. Each letter appears in one of nine colors.

The basic game involves creating a crossword arrangement of words, either by adding cubes, rearranging existing words or rotating cubes to reveal new letters.

14 additional rule sets are included, with a few variants on the basic rules and a variety of additional games which take advantage of the number cube and the colored letters.