"The Coveted Mirror was a graphical text-based adventure game published for the Apple II. It was created by Eagle Berns and Holly Thomason and released by Penguin Software in 1983.
The land of Starbury was taken over by Voar the evil. During his grasp for power, Voar tried to seize the magic mirror but broke it into five pieces; luckily, he was only able to grab four of the pieces. it is up to you, the hero, to find the fifth and final piece in order to break Voar's rule and save the people of Starbury.
The Coveted Mirror utilizes a text parser, in which the player types commands to perform actions in the game.  Additionally, part of the challenge of The Coveted Mirror involves frequent, timed escapes from the jail tower. Within a limited timeframe, indicated by an hourglass, the player must search the castle, find objects, and talk to people and return to the cell by the time the jailer makes his rounds. This timed element adds another dimension to the exploration and puzzle solving.
Source: Wikipedia, "The Coveted Mirror", available under the CC-BY-SA License.