a zork is a animal between a mix of a horse and a zebra that is a zork :)
Zork I happened in 9801.
Zork happened in 1977.
Zork was created in 1977.
Zork I was created in 1980-12.
Zork Nemesis happened in 1996.
Beyond Zork happened in 1987.
Zork Zero happened in 1988.
Return to Zork happened in 1993.
Legends of Zork happened in 2009.
Zork II happened in 1981.
Zork III happened in 1982.
Zork Nemesis was created on 1996-02-29.