Riddle of the Sphinx is a vertically-scrolling action-adventure game written by Bob Smith[1] for the Atari 2600 and published by Imagic in 1982.

The player, as the Prince of Egypt, must collect treasures and gain strength to rescue the land from a terrible curse.

[2] Smith wrote several other games for Imagic, including Star Voyager and Dragonfire.

[1] The goal of Riddle of the Sphinx is to reach the Temple of Ra and make the correct offering.

[3] Richard A. Edwards reviewed Riddle of the Sphinx in The Space Gamer #58, and called it a "masterful" blend of strategy and arcade gaming in a home cartridge.