Colossus X Backgammon is a single-player, mouse-controlled DOS implementation of Backgammon. The pieces are moved by either clicking on first the piece and then the destination, alternatively the player cal click on a piece and drag-and-drop it. Where there is only one legal move the game will automatically move the piece when it is clicked on.

Dice are rolled by clicking anywhere in the game area. The game communicates with the player via a message area at the bottom of the screen and has an in-game option to change the language of these messages, the languages changed by entering English, Francais, Deutsch, Espanol or Italiano at the appropriate prompt.