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Engine developer Stefan Jokisch, 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 None


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.


Infocom games:


  • Colossal Cave Adventure (I: 1975-1977, II: 1978-1981, 2.5: 1995, 3: 1978, 4: 1995, 5: 1978, 6: 1984, 370: 1993)
  • Zork (the original release by the team that would become Infocom at MIT, converted to z-code)

Converted from Scottfree: Adventure International games:

Mysterious Adventures series:


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


External links