Zork

Zork belongs to the very first generation of text adventures, with roots going back to the late 1970s, when it began as an experiment on a mainframe computer. Building on that foundation, the studio Infocom released the commercial trilogy Zork I: The Great Underground Empire, Zork II: The Wizard of Frobozz and Zork III: The Dungeon Master, gradually publishing them for a wide range of home computers of the era, including 8-bit Atari machines, the Commodore 64 and Japan's PC-9801. The games were defined by a pure text parser, where players typed commands as verbs and objects, an atmospheric, often dry sense of humor, and a sprawling underground world full of puzzles, traps and side passages to explore.

The series didn't stop at repeating the same formula once the original trilogy was finished. Beyond Zork, from 1987, added role-playing elements — a character with attributes and a combat system — while Zork Zero, from 1988, expanded the world with graphics and served as a prequel to the whole saga. After Infocom folded and the brand passed to Activision, the series shifted in the 1990s toward graphical adventures with rendered scenes and filmed sequences, a clear departure from the original parser, though the spirit of the underground empire and its puzzles carried through.

Zork stands at the birth of the entire text-adventure genre, and its influence is visible in later adventure games, which borrowed both its puzzle structure and its sense of a mysterious, half-comic underground atmosphere.