1893: A World's Fair Mystery is a historical mystery text-based adventure game using very detailed factual information regarding the famous 1893 World's Fair. Chicago historian Peter Nepstad was the one-person creator and researcher of the game. You play a detective who is looking into a diamond theft but eventually come upon kidnapping and murder as well which seem to be linked to a grander plot. There are 500 historical photographs used throughout the game, and numerous locations throughout the fair which will take many hours to discover and explore. If you get stuck, there are a visitor's guide to the fair, a map of the grounds and in-game hints if you can find them.