DOS abandonware games sorted by title, from Z to A

Their Finest Hour: The Battle of Britain is an abandoned historical combat flight simulation game set in Great Britain (obviously) during World War 2. Their Finest Hour was designed by Lawrence Holland, developed and released by LucasArts in 1989 for DOS, Amiga, Atari ST.

The Twilight Zone is an abandoned sci-fi themed adventure game based on the popular TV series of the same name. The Twilight zone released in 1988 by First Row Software Publishing for DOS and Amiga. At it's core, The Twilight Zone is a text adventure, so you have to type in commands, but it's supported by the graphics.

The Third Courier is an abandoned (atypical) adventure / role playing game set in Berlin during the cold war era and, of course, it's a spy game. The Third Courier was developed by Manley Associates and released by Accolade in 1989 for DOS, but it was also published for Amiga, Apple IIgs, Atari ST platforms.

The Terminator: Future Shock is an abandoned science fiction first-person shooter game based on the popular Terminator movies franchise, set in a dystopian world where machines has taken over the Earth. The Terminator: Future Shock was developed by Bethesda Softworks and released in 1995 for DOS.