PT-109 (Mac OS Classic)
This game has hidden development-related text.
You've seen the movie, heard the song, and assembled the model kit. Now you can command John F. Kennedy's Patrol Torpedo boat yourself!
The master floppy was labeled
PT109 4/14/88 before being shortened to
PT109, although the application and other files continued changing up to April 18th. (The earlier name can be seen with Fedit in the third sector of the disk.)