The Case of the Cautious Condor was one of the first CD-ROM only games and it was released as early as 1989 for the (then) groundbreaking japanese home computer FM-Towns which came with a CD drive by default - long before this got into mainstream on the PC four years later with killer applications like Rebel Assault.

It's been many years since you've last heard from your old war buddy Bronson Barnard. You two had been flying together over France in 1917, you even saved his life there once. After the war, your lives drifted apart. He became a successful industrialist, you joined the police first, and became a private detective later.