Zork Trilogy
The computer games collection Zork Trilogy by the game company Infocom was released in 1986 for the C64/128 and contained all three parts of the computer game Zork on three 5.25" disks. Included in the package was an item that was a featured in-game object, the Zorkmid Coin.
First developed between 1977 and 1979 on a PDP-10 mainframe computer, Zork is often considered to be one of the most important and well-known examples of interactive fiction and the first well-known adventure game. With hundreds of locations and interactions with objects, it served as an early example of a computer game simulation that offered a detailed and immersive virtual world. In doing so, it was one of the very first games that laid the foundations of video game concepts such as exploration, object collection, and problem-solving.
Released for many platforms, such as the C64, TRS-80, Apple II and many others, the three games that make up the trilogy were immensely popular, selling around 2 million copies by 1992. Further instalments were published, with the last so far being Zork: The Undiscovered Underground, in 1997.