Play an Interactive Fiction game written in Zcode.
Play more: Click here.
See the Interactive Fiction archive at http://www.ifarchive.org/. These
games are of the "Z-Machine"
specification which are also called Infocom, Inform, and ZCode.
The Zplet Java Zcode interpreter is from http://zplet.sourceforge.net/
Activision's Infocom text adventure collections can be played in this
engine, too, including the very oldest Zork games.