Powered by Parchment at IPlayIf.com.
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See the Interactive Fiction archive at https://www.ifarchive.org/. These
games are of the "Z-machine"
specification which are also called Infocom, Inform, and ZCode.
from Parchment on GitHub provided by IPlayIf.com.
The old Zplet Java Z-machine interpreter was from Zplet on SourceForge.
Activision's Infocom text adventure collections can be played in these
engines, too, including the very oldest Zork games.