Hidden Expedition: Titanic, by Big Fish Games, is a seemingly simple game of finding objects in a picture. The pictures have a mostly antique, nautical theme, and you need to find all of the objects on your list before your oxygen runs out. As you progress through the levels, the number of rooms you need to explore within the time frame increases. If you're really stuck, you can press the Hint button, but at the price of losing some of your oxygen. You can boost the oxygen if you click on an oxygen tank hidden in the picture, but of course that depends on there being an oxygen tank available...
Whenever you pass a level, you're shown some trivia about the Titanic. Did you know that the price of a single first-class ticket cost the equivalent of $50,000 today? In addition, there are bonus puzzles between levels. You've won the game when you successfully crack the code to the King's safe and find the crown.
Analysis: This visually gorgeous game is much harder than I've made it sound. For a start, its antique theme makes it quite challenging to find things like a "hydrant" or a "telephone". (The antique theme isn't necessarily consistent—one of the "guitars" is a perfectly modern-looking Les Paul.) There are several pictures for each description, so if you've found a "snake" in one room, you can't assume you'll find that exact same object the next time "snake" appears on your list. I also got caught on "leaf lettuce", which is called bok choy where I live (I spent quite some time looking for iceberg lettuce before pressing the hint button). Finally, a "spade" could describe a number of different objects!
Some of you may find this game a little too easy—even I completed it in about an hour—but the changing list of items and the sheer loveliness of the illustrations make its replay value very attractive. It's a lot of fun to play with your kids, too. The links above allow you to play a sample online version of the game or, for a more complete experience, download the limited trial version for Windows.