The Intellivision version is pretty great too. The Atari version moves fast when it gets to collecting the treasures, but the Intellivision is just about the same speed. And I think it's 16-direction disc makes it a little easier to maneuver.

I just wish Imagic made more games along the lines of Riddle of the Sphinx. It was a pretty linear adventure game, but just imagine how great a similar style of game could be once they really started pushing the envelope around 1984 or so. Make it scroll in different directions when needed, let you go inside buildings, hidden rooms, and maybe even a boss or two.