The Gnubik program is an interactive, graphical, single player puzzle. Yes, this is another implementation of the classic game like that invented by Erno Rubik. You have to manipulate the cube using the mouse. When each face shows only one colour, the game is solved.

Gnubik is written in C and Guile. The latter allows you to extend the program using the Scheme language — a simple programming tool which even novice computer users can use. For example, you can use Scheme to write your own automated solving routines or to create patterns.


Gnubik is a graphical program. Look at some screenshots to see how it looks in action.


Some features of Gnubik include:

  • Free software. GNUbik is licensed under the GNU General Public Licence.
  • Supports cubes of any size. 3 by 3 by 3 is the default.
  • It has a GNOME look and feel.
  • Custom colours. Choose any that are available to your system.
  • Instead of colours, you can also use images.
  • You can watch the cube solve itself. And you can write your own scripts and run them on the cube.
  • You can record and playback sequences of moves.
  • It's portable. GNUbik has been tested on many GNU/Linux operating systems. It has also been reported to work on other non Unix systems.
  • It's internationalised. GNUbik has been translated into non English languages.
  • Configurable animation speed.


Gnubik can be found on the main GNU server (HTTPSHTTPFTP) and its mirrors; please use a mirror if possible.


Using the program is very intuitive — You just point and click! Documentation therefore is somewhat redundant. However a manual is available online. You may also find information about Gnubik by running info gnubik or man gnubik, or by looking at /usr/share/doc/gnubik/, /usr/share/local/doc/gnubik/, or similar directories on your system. A brief summary is available by running gnubik --help.

Mailing list

Gnubik currently doesn't have a mailing list. Bug reports should be sent to

Announcements about Gnubik and most other GNU software are made on

Getting involved

Translating Gnubik
Gnubik has already been translated to many languages, please see the Translation Project page for Gnubik. If you have a new translation or updates to the existing translations, please have the changes made there. For more information, see the Translation Project home page.
Gnubik is currently maintained by John Darrington.


Gnubik is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

Gnubik has no association with the “Rubik” or “Rubik's Cube” trademarks or with Seven Towns Ltd.