1893: A World's Fair Mystery is an educational work of interactive fiction by American author Peter Nepstad, written in the TADS programming language. It takes place during the Chicago World's Columbian Exposition of 1893. The exposition is recreated in detail, with archival photographs from the fair and in-depth descriptions detailing each of the few hundred locations. An early text-only version won the 2002 XYZZY Award for Best Setting, and 1893 was declared runner-up for Games' Best RPG/Adventure 2004.