Omega Stone - Riddle of the Sphinx II, The

Gameboomers: Omega Stone Walkthrough
Detailed walkthrough including screenshots of puzzle solutions.
http://www.gameboomers.com/wtcheats/pcOo/omegastone.htm

Low-Spoiler Guide to The Omega Stone
Reviews, gameplay hints, and walkthrough.
http://www.angelfire.com/hero/tjekanefir/omega.htm

The Omega Stone: The Sequel To Riddle Of The Sphinx
Official site offers a demo, game patches, screenshots, and various downloads.
http://www.theomegastone.com/

Universal Hint System
Offers specific questions and hints in progressively detailed steps.
http://www.uhs-hints.com/uhsweb/tos.php