

Test Drive is an abandoned racing game developed by Distinctive Software and released by Accolade in 1987 for DOS and Amiga, Apple II, Atari ST, Commodore 64. This is the game that started the whole Test Drive franchise. Gameplay is fairly simple and consists of driving sports cars on a mountain road while avoiding police cars.
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.
Altered Destiny is a sci-fi themed point and click adventure game designed by Michael Berlyn, developed and released by Accolade in 1990. Altered Destiny runs on DOS but was also published for Amiga.
Elvira 2: The Jaws of Cerberus is an abandoned horror adventure/RPG hybrid game with elements of dark fantasy, developed by Horror Soft and published by Accolade for DOS in 1991. Elvira 2: The Jaws of Cerberus is also part of the Elvira series of games, each of one based on the popular movie/TV personality Elvira.