Zylon the Aged 398 GUE
The Lost City of Zork 665~668 GUE
Zork Zero (prologue) 789 GUE
Zork Zero: The Revenge of Megaboz 883 GUE
The Forces of Krill c. 883~910 GUE
Malifestro Quest c. 883~910 GUE
Cavern of Doom c. 883~910 GUE
Conquest of Quendor c. 883~910 GUE
Dungeon 948 GUE
Zork I: The Great Underground Empire 948 GUE
The Philosopher's Stone948 GUE (parallel to Zork I)
Zork II: The Wizard of Frobozz 948 GUE
Zork III: The Dungeon Master 948 GUE
Zork: Nemesis-The Forbidden Lands 949 GUE
Enchanter 956 GUE
Sorcerer 957 GUE
Zork Quest I: Assault on Egreth Castle c. 957~966 GUE
Zork Quest II: The Crystal of Doom c. 957~966 GUE
The Zork Chronicles c. 957~966 GUE
Enchanter (novel) c. 966 GUE
966 GUE
Beyond Zork: The Coconut of Quendor 966 GUE (parallel to Spellbreaker)
Zork: The Undiscovered Underground 1066 GUE
Zork: Grand Inquisitor 1067 GUE
Legends of Zork c. 1067~1247 GUE
Wishbringer: The Magick Stone of Dreams 1157 GUE
Wishbringer (novel) c. 1157~1247 GUE
Return to Zork 1647 GUE
Lurking Horror sometime after the invention of the automobile
which was in the late 1300s to early 1400s

Dungeon 1977~1979Dave Lebling, Marc Blank, Bruce Daniels, Tim Anderson
Zork I 1980-11-XXDave Lebling, Marc Blank
Zork II 1981-11-XXDave Lebling, Marc Blank
Zork III 1982-08-18Dave Lebling, Marc Blank
Enchanter 1983-08-10Dave Lebling, Marc Blank
The Forces of Krill 1983-08-XXSteve Meretzky
Malifestro Quest 1983-09-XXSteve Meretsky
Cavern of Doom 1983-09-XXSteve Meretsky
Sorcerer1984-01-31Steve Meretsky
Conquest of Quendor 1984-10-XXSteve Meretsky
Wishbringer 1985-05-01Brian Moriarty
Spellbreaker 1985-09-16Dave Lebling
Lurking Horror 1987-05-06Dave Lebling
Beyond Zork 1987-09-15Brian Moriarty
Zork Quest I 1988-04-XXElizabeth Langosy
Zork Quest II 1988-08-XXElizabeth Langosy
Wishbringer (novel) 1988-08-XXCraig Shaw Gardner
Zork Zero 1989-03-23Steve Meretzky
Enchanter (novel) 1989-04-XXRobin W. Bailey
The Zork Chronicles 1990-06-XXGeorge Alec Effinger
The Lost City of Zork 1991-01-XXRobin W. Bailey
Return to Zork 1993-08-20Eddie Dombrower
The Philosopher's Stone UNFINISHEDNino Ruffini
Zork: Nemesis 1996-02-29Cecilia Barajas
Zork: The Undiscovered Underground 1997-08-28Marc Blank, Mike Berlyn
Zork: Grand Inquisitor 1997-10-31Laird Malamed
Legends of Zork 2009-04-01Jolt Online Gaming

Zork Trilogy 1986COMPILATION (Zork 1, Zork 2, Zork 3)
Enchanter Trilogy 1986COMPILATION (Enchanter, Sorcerer, Spellbreaker)
Zork Anthology 1994COMPILATION (Zork 1, Zork 2, Zork 3, Beyond Zork, Zork Zero)
Zork Collection