Images: 10 most important games of all time

Zork, once MIT hacker jargon for an unfinished program, according to Wikipedia, spawned the term "adventure game" in 1980. Set in an "underground empire" of dungeons and imaginative creatures such as grues and zorkmids, the Infocom trilogy of games is stocked with hidden cave treasures for players to find.

Photo by David Skaar

Caption by Zoë Barton