I have one that I'm trying to record to put up on Youtube. It's called Titanic: Adventure out of Time. I might just stick up links to the videos involving the Romanovs when I get it all completed!
Anyway, it's an old computer game. The story starts off in London during World War 2, and your character is a failed special agent who botched a mission on the Titanic, resulting in his dismissal. When a German bomb lands in front of your apartment, you find yourself back in your cabin during the final hours before the Titanic sinks. You have to get three items to get the good ending: the Rubayat, a painting, and a notebook. The notebook contains the names of Russian revolutionists, and if you manage to get it, you can warn the Tsar and stop the bolshevics from ever seizing power. Of course, in order to keep the Romanovs in power, you also have to get the other three items, otherwise the second World War will destroy their empire.
If you guys want loads of spoilers I'll give them to you! For some reason, the game seems to want to freeze up on me, so it might be a spell before the videos are up.
As for the technicalities of the game, it's probably the most real-looking Titanic I've seen, outside the James Cameron film sets. It's layed out exactly as the Titanic was, and the images are still photorealistic in this day and age. The plot is intriguing, but the puzzles can be downright hard, especially that Russian doll puzzle. I can't wait to get it up on the Internet!
For those of you who dislike video games, I'm sure even this one would be appealing to you.