Has an AFL game ever ended 79-31?
Exactly once. On May 20, 1967, Essendon beat Footscray 79-31, and no AFL game before or since has ended that way. When it happened it was a scorigami, the first 79-31 in league history.
That makes 79-31 the 3836th most common final score out of 6,607 that have ever occurred in AFL. One point away, 80-31 has happened 2 times and 79-32 has happened 1 times.