A lot of good stuff ... and some truly awful elements!
The premise is not as bad as I've seen in other games and anyone who looks for great "plotlines" in a game is usually disappointed. Suffice it to say, you visit several different worlds and need to accomplish various tasks in each. My favorite was the icy Siberian type locale, which boasted a few interesting and unusual "puzzles."
Characters range from the very boring and stilted heroine (with the absolute WORST voice acting I've ever heard ... it was almost enough to make me want to mute the whole thing and just read the subtitles) to a hilarious mummy who helps her out during the Egyptian phase of the game.
Bottom line is that the game kept me entertained for a few hours (it is actually quite a short game, although as I said, I cheated a few times to hurry things along). But don't expect it to win any 'game of the year' awards.