Which Apple operating system did the game that was a sequel to the Mac-exclusive "A-10 Attack!" require?
A-10 Cuba!: A-10 Cuba! A-10 Cuba!:  is a flight simulator computer game released by Parsoft Interactive in 1996 for Windows and Mac. A-10 Cuba!:  The game was a sequel to the Mac-exclusive "A-10 Attack! Classic Mac OS: The "Classic" Mac OS is a graphical user interface-based operating system developed by Apple Inc. for its Macintosh family of personal computers from 1984 until 2001, the original member of the series of Macintosh operating systems.
The "Classic" Mac OS is a graphical user interface-based operating system developed by Apple Inc. for its Macintosh family of personal computers from 1984 until 2001