An SDL port of Frotz, sfrotz, was introduced in 2010 by Aldo Cumani. It has languished since 2011 while assorted changes in the Frotz core and libraries upon which it depends changed such that sfrotz will no longer compile. Thanks to the efforts of Timo Korvola, the old sfrotz code was cleaned up and integrated with Unix Frotz. It’s still rather messy, but you can now easily have a version of Frotz on your Unix machine capable of running V6 games with full graphics and any games with sound effects per the Blorb specs. Build it with “make sfrotz”.
As always, you can see what’s cooking with Unix Frotz at github.com/DavidGriffith/frotz