Glk/ZCode

ZCode
Engine developer	dreammaster
Companies that used it	Infocom and others
Games that use it	innumerable games
Date added to ScummVM	2018-12-09
First release containing it	2.2.0

About

The ScummVM Z-code engine is based on Frotz. Frotz is the most popular Z-machine implementation, developed by Stefan Jokisch to play games adhering to the different Z-machine versions of text-based games, first introduced for the Zork series and following games by Infocom, then later Graham Nelson's Inform that became the de facto standard for interactive fiction.

Games

Official Infocom games:

Zork I: The Great Underground Empire (1980) Zork II: The Wizard of Frobozz (1981) Zork III: The Dungeon Master (1982) Deadline (1982) Starcross (1982) Suspended: A Cryogenic Nightmare (1983) The Witness (1983) Infidel (1983) Planetfall (1983) Enchanter (1983) Sorcerer (1984) Seastalker (1984) Cutthroats (1984) The Hitchhiker's Guide to the Galaxy (1984) Suspect (1984) A Mind Forever Voyaging (1985) Wishbringer: The Magick Stone of Dreams (1985) Spellbreaker (1985) Ballyhoo (1986)

Hollywood Hijinx (1986) Leather Goddesses of Phobos (1986) Moonmist (1986) Trinity (1986) Border Zone (1987) Bureaucracy (1987) The Lurking Horror (1987) Nord and Bert Couldn't Make Head or Tail of It (1987) Plundered Hearts (1987) Stationfall (1987) Beyond Zork (1987) Zork Zero (1988) Sherlock: The Riddle of the Crown Jewels (1988) Arthur: The Quest for Excalibur (1989) James Clavell's Shōgun (1989) Journey: The Quest Begins (1989) Zork: The Undiscovered Underground (1997) (developed by Activision) Milliways (prototype) (created in 1988, released in 2008)

Converted from Alan2:

• Dinnertime (1999)
• Mazemapper (1999)
• The Mean Story (1999)
• To Get to the Other Side (1999)
• They're After You! (1999)

Converted from ScottFree - Adventure International games: Adventureland (1978) Pirate Adventure, a.k.a. Pirate Cove (1979) Mission: Impossible, a.k.a. Impossible Mission, a.k.a. Secret Mission (1979) Voodoo Castle (1979) The Count (1979) Strange Odyssey (1979) Mystery Fun House (1979) Pyramid of Doom (1979) Ghost Town (1980) Savage Island, Part I and II (1981) The Golden Voyage (1981) Sorcerer of Claymorgue Castle (1982) Return to Pirate's Isle (1983) The Adventures of Buckaroo Banzai Across the 8th Dimension (1984) Questprobe: Featuring the Hulk a.k.a Marvel Adventure #1 (1984) Questprobe: Featuring Spider-Man (1984) Questprobe: Featuring the Human Torch and the Thing (1985)

Converted from ScottFree - Mysterious Adventures series: Mysterious Adventures 1: The Golden Baton (1981) Mysterious Adventures 2: The Time Machine (1981) Mysterious Adventures 3: Arrow of Death Part 1 (1981) Mysterious Adventures 4: Arrow of Death Part 2 (1982) Mysterious Adventures 5: Escape from Pulsar 7 (1982) Mysterious Adventures 6: Circus (1982) Mysterious Adventures 7: Feasibility Experiment (1982) Mysterious Adventures 8: The Wizard of Akyrz (1983) Mysterious Adventures 9: Perseus and Andromeda (1983) Mysterious Adventures 10: Ten Little Indians (1983) Mysterious Adventures 11: Waxworks (1983)

Converted from other architectures/languages:

• Super Star Trek (1971-1974) (converted from BASIC to C to Inform)
• Hunt the Wumpus (1973) (converted from BASIC to to Inform)
• Colossal Cave Adventure (I: 1975-1977, II: 1978-1981, 2.5: 1995, 3: 1978, 4: 1995, 5: 1978, 6: 1984, 370: 1993) (converted from Fortran/C to Inform)
• Robots (1976) (converted from BASIC to Inform)
• Zork (1978) (the original release by the team that would become Infocom at MIT, converted to Inform) (converted from Fortran to Inform)
• CIA Adventure (1980) (converted from BASIC to Inform)
• The Wizard's Castle (1980) (converted from BASIC to Inform)
• Frankenstein Adventure (1981) (converted from TRS-80 BASIC to Inform)
• Softporn Adventure (1981) (converted from BASIC to Inform)
• Inhumane (1985) (converted from Applesoft Basic to Inform)
• Praser 5 (1985) (converted from Applesoft Basic to Inform)
• Werner's Quest 1: The Black Ladder (1985) (converted from The Quill Adventure System to Inform)
• Werner's Quest 2: Revenge of the Thing-Fish (1985) (converted from The Quill Adventure System to Inform)
• Werner's Quest 3: Rance the Dungeonkeeper (1985) (converted from The Quill Adventure System to Inform)
• Werner's Quest 4: Unchanter (1985) (converted from The Quill Adventure System to Inform)
• The Nine Dancers (1986) (converted from BBC BASIC to Inform)
• Uninvited (1986) (converted from MacVenture to Inform)
• Paranoia (1987) (converted from C to Inform)
• The Puppet-Man (1987) (converted from BBC to Inform)
• Shadowgate (1987) (converted from MacVenture to Inform)
• Snafufun (1988) (converted from BASIC to Inform)
• Night of the Vampire Bunnies (1989) (converted from BASIC to Inform)
• Adventure in Humongous Cave (1993) (converted from AGT (Adventure Game Toolkit) to Inform)
• Odieus's Quest for the Magic Flingshot (1993) (converted from LADS (Levy's Adventure Development System) to AGT (Adventure Game Toolkit) to Inform)
• Freefall (1995) (Inform version of the 1984 game Tetris)
• Icebreaker (1995) (converted from 3DO to Inform)
• Quest for the Magic Healing Plant (1995) (converted from AGT to Inform)
• Robot Finds Kitten (1997) (converted from C to Inform)
• Reverzi (1999) (Inform version of the board game Reversi, also known as Othello)
• Chaos In Space (2001) (aka Warp!) (converted from DOS to Inform)
• HLA Adventure (2004) (converted from HLA (high level assembly) to Inform)
• Rachel Has a Bad Day (2007) (converted from ADRIFT to Inform)

Other:

• A Change in the Weather (1995)
• The Mind Electric (1995)
• CompXX (1996)
• Lists and Lists (1996)
• Phlegm (1996)
• So Far (1996)
• Vindaloo (1996)
• Apartment F209 (1997)
• Bedlam (1997)
• The Edifice (1997)
• I-0 (1997)
• Phred Phontious and the Quest for Pizza (1997)
• Sins Against Mimesis (1997)
• The Space Under the Window (1997)
• The Chicken Under the Window (1998)
• Flowers for Algernon (1998)
• Hey, I'm Supposed to be Free Range (1998)
• In the End II (1998)
• Photopia (1998)
• Saied (1998)
• Spacestation (1998)
• Spider And Web (1998)
• Three Steps to the Left (1998)
• Annoyotron (1999)
• Break-In (1999)
• Chicks Dig Jerks (1999)
• Coke Is It! (1999)
• Death to my Enemies (1999)
• Hunter, in Darkness (1999)
• The Mulldoon Legacy (1999)
• Revenger (1999)
• Thorfinn's Realm (1999)
• Varicella (1999)
• Zugzwang (1999)
• 9:05 (2000)
• Dragon! (2000)
• Fail-Safe (2000)
• Hallowe'en (2000)
• ManoZ (2000)
• My Angel (2000)
• Not Just A Game (2000)
• Shade (2000)
• Shrapnel (2000)
• Spitting Crumbs (2000)
• What-If? (2000)
• 1981 (2001)
• All Roads (2001)
• Discord (2001)
• Donkey Kong (2001)
• Dreams Run Solid (2001)
• Finding Henry (2001)
• Fit for a Queen (2001)
• Hank Buzzcrack Has A Job To Do, God Damn It (2001)
• Heroes (2001)
• Jigsaw 2 (2001)
• La Lagune de Montaigne (2001)
• Large Machine (2001)
• The Lobster (2001)
• The Newcomer (2001)
• Pac-Man (2001)
• Peter Theta Fixes the Holodeck (2001)
• Pick Up the Phone Booth and Aisle (2001)
• The Sofa At The End Of The Universe (2001)
• A speedIF O entry (2001)
• Squeaky on the Moon (Fajfeta sur la Luno in Spanish) (2001)
• Stiffy Makane: The Undiscovered Country (2001)
• Tooth Ow Zunden Too (2001)
• Tooth Ow Zunden Won! (2001)
• A Walk Through Forever (2001)
• The Weapon (2001)
• Appallatron (2002)
• The Body (2002)
• Cheeseshop (2002)
• The Circus of Sadness (2002)
• Glossary (2002)
• Kraketoa Tuna Melt (2002)
• The Mulldoon Murders (2002)
• Shangri La (2002)
• Soul-Searching (2002)
• The Travels of Fitzwilliam Pound (2002)
• The Waterhouse Women (2002)
• The Angel Curse (2003)
• The Epitome of Toastlessness (2003)
• Gourmet (2003)
• Insight (2003)
• The Invisible Argonaut (2003)
• Logic Puzzle Sampler (2003)
• The Thorn (2003)
• Wormwood Days II: The Aftermath (2003)
• The Dreamhold (2004)
• The Fire Tower (2004)
• Hotel Noir (2004)
• Last Ride of the Night (2004)
• Storforsen (2004)
• Things (2004)
• Turning Point (2004)
• Authority (2005)
• La Canción del Bardo (2005)
• The Colour Pink (2005)
• The Corn Identity (2005)
• Dreary Lands (2005)
• The Fox, The Dragon, and The Stale Loaf of Bread (2005)
• Where There's A Will (2005)
• Whom The Telling Changed (2005)
• Within a Wreath of Dewdrops (2005)
• An Abbreviated Night Before Christmas (2006)
• Another Goddamn Escape the Locked Room Game (2006)
• Bob's Garage (2006)
• Chicken and Egg (2006)
• Delightful Wallpaper (2006)
• An Escape To Remember (2006)
• I'll (2006)
• Southern Gothic (2006)
• This is the game that I wrote (2006)
• The Tower of the Elephant (2006)
• AFGNCAAP - IF Agent! Todays Adventure: Holy Goat! (2007)
• Dead Cities (2007)
• House of Dream of Moon (2007)
• The Day I shot ... (2007)
• In Search of Velocitas fictus (2007)
• Jack in the box (2007)
• Not the Same Old Lang Syne (2007)
• Trainstopping (2007)
• Xmaton (2007)
• Attack of the Terror Tabby!!! (2008)
• Bedtime story (2008)
• A Night With Kes (2008)
• Once upon a winter night, the ragman came singing under your window (2008)
• Pick up the pine box and die (2008)
• The Day I mauled ... (2008)
• Nine-tenths of the Law (2008)
• Violet (2008)
• What Happens in Vagueness (2008)
• 69,105 (2009)
• HTP (2009)
• IF Progressive One (2009)
• Intimate Encounters (2009)
• The Lighthouse (2009)
• Make It Good (2009)
• Paranoia (2009)
• Teaching her to dance (2009)
• Yay Games (2009)
• The Day I stabbed Stalin (2010)
• Dual Transform (2010)
• Explore! (2010)
• A Green Rain (2010)
• Hoist Sail for the Heliopause and Home (2010)
• Hoosegow (2010)
• Lobsters On A Plane (2010)
• Mango (2010)
• Vortex 2305 (2010)
• Le Roi de Fihnargaia (2010)
• Sand-dancer (2010)
• Being the Ending of the Beginning (2011)
• Birth of Mind (2011)
• Bored Ladders (2011)
• Blue (2011)
• Cold Iron (2011)
• The Day I saved Elvis (2011)
• Delusions Again (2011)
• The extraordinary events of the last day of Professor Mangleworth (2011)
• Hangar 22 (2011)
• The man-eating, halitosic gorilla of Brazil (2011)
• Schießbefehl (2011)
• You are a Turkey! (2011)
• You've Got a Stew Going! (2011)
• And a Hippo New Year (2012)
• Color of Milk Coffee (2012)
• Dinner Bell (2012)
• Endless, Nameless (2012)
• Fingertips: All Alone (2012)
• Fingertips: Aren't You the Guy Who Hit Me in the Eye? (2012)
• Fingertips: Come On and Wreck My Car (2012)
• Fingertips: Everything Is Catching On Fire (2012)
• Fingertips: Fingertips (2012)
• Fingertips: Fingertips (Reprise) (2012)
• Fingertips: Hey Now, Everybody (2012)
• Fingertips: I Don't Understand You (2012)
• Fingertips: I Found a New Friend (2012)
• Fingertips: I Heard a Sound (2012)
• Fingertips: I Walk Along Darkened Corridors (2012)
• Fingertips: I'm Having a Heart Attack (2012)
• Fingertips: Leave Me Alone (2012)
• Fingertips: Please Pass the Milk Please (2012)
• Fingertips: Something Grabbed Ahold of My Hand (2012)
• Fingertips: The Day That Love Came To Play (2012)
• Fingertips: What's That Blue Thing Doing Here? (2012)
• Fingertips: Who's Knockin' on the Wall? (2012)
• Fingertips: Who's That Standing Out the Window (2012)
• IF Whispers 5 (2012)
• The Legend of the Missing Hat (2012)
• Nautilisia (2012)
• Parasites (2012)
• A Reading in May (2012)
• Dig My Grave (2012)
• The Statue Got Me High (2012)
• The Day I died (2013)
• The day I hugged Ghandi! (2013)
• Disenchantment Bay (2013)
• Es kam aus den Alpen (2013)
• The Horrible Pyramid (2013)
• The Nessa Springs Slasher (2013)
• The Paper Bag Princess (2013)
• The tale of the cursed eagle (2013)
• Wrenlaw (2013)
• Craverly Heights (2014)
• The Day I came back (2014)
• Holy Robot Empire (2014)
• Illuminate (2014)
• Kii!Wii! (2014)
• Lime Ergot (2014)
• Monster Maker (2014)
• More (2014)
• The Mundane Tale of the Morning After (2014)
• The Northnorth Passage (2014)
• So, You've Never Played a Text Adventure Before, Huh? (2014)
• Tea Ceremony (2014)
• By the Lake (2015)
• The Day of the Queen (2015)
• Discover the World (2015)
• Hippo on Elm Street (2015)
• The oldest hangover on Earth (2015)
• Ombre (2015)
• Six Gray Rats Crawl Up The Pillow (2015)
• Someone Keeps Moving My Chair (2015)
• Starry Seeksorrow (2015)
• The Story of the Shinoboo (2015)
• The Day time stood still (2016)
• Life with OCD (2016)
• Baking With Lizzie (2017)
• Eggstraordinary Adventure (2017)
• The Bean Stalker (2018)
• Fin de sickleburg (2018)
• Walk Among Us (2018)

Status

A work-in-progress sub-engine of the new Glk API has been added based on Frotz.

External links

• Other Frotz ports on the IF Archive
• Wikipedia article on the Z-machine
• IF Archive list of free Z-code games