Question: Which Apple operating system did the game that was a sequel to the Mac-exclusive "A-10 Attack!" require?
Sentence (from "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.
Relevant evidence: Yes