Infidel

Infidel is an interactive fiction computer game published by Infocom in 1983. It was written by Patricia Fogleman and Michael Berlyn and was the first in the "Tales of Adventure" line. Due to Infocom's virtual Z-Machine, it was ported to a wide variety of popular computing systems of the day, including the Apple II and Commodore 64. It is Infocom's tenth game.