Wikipedia
Shadowfire (video game)
Shadowfire is a computer game for the Sinclair ZX Spectrum and Commodore 64. It was developed by British developer Denton Designs and was published by Beyond Software in 1985. Shadowfire is notable as one of the first games to use a menu-and-icon-driven interface, even with a lightpen. It was followed by a sequel, Enigma Force, in 1986.