An adventure game in the style of Myst (static rendered backgrounds that
switch as you take each ‘step’), Riddle of the Sphinx places you in the role
of a close friend of Sir Gil Blythe Geoffreys, an archaeologist who as
recently uncovered some remarkable finds about the Great Pyramid and the
Sphinx. His discoveries have doomed him with a curse, however, and its your
duty to right the wrongs he has uncovered. Taking place in the near future
(after the Egyptian Antiquities Organization apparently closed off the sites
to the public), you will uncover secrets that have been buried for ten
millennia.

Rendered in 3D, the game tries to reasonably copy the sites and monuments
surrounding the Sphinx and the Pyramids of the Giza Plateau, allowing you to
explore the area without ever leaving your chair, much less sweat out the heat
of the desert. Gameplay consists of moving the cursor around, taking note of
the highlights that can be selected, which include walking in directions and
picking up or using items. Occasionally, you’ll be treated a Quicktime VR
panoramic scene that will allow you to freely turn and look around, but the
majority of the game is static views that allow you to take ‘steps’ of varying
sizes in different directions. The game tends to emphasize exploration of
ancient Egyptian structures and their passageways, both real and fabricated.

Riddle of the Sphinx: An Egyptian Adventure