A graphical text adventure adaptation of the Fighting Fantasy gamebook of the same name. The game manual says:
"As the mighty alien Arcadian Empire tightens its hold on the galaxy, the leaders of the secret earth organisation SAROS, gather their slender resources into one last daring and foolhardy mission to strike at the heart of the invaders home planet. [...] Your cover is excellent; you will travel as a merchant to the planets Tropos, Halmurus and Arcadion all of which form part of the Arcadian Empire. [...] The building that houses the queen computer on the planet Arcadion can be entered by using a numerical code of nine binary digits, (binary digits are either 0 orl; so, 110 would be three binary digits) the underground spy networks may know something to help you discover these digits. You must locate the rebel leaders, learn the digits, then destroy the queen computer, before it destroys you!"