Has an AFL game ever ended 76-66?
Yes. AFL has seen a final score of 76-66 5 times. It first happened on June 7, 1926, when Collingwood beat St Kilda, and most recently on July 6, 2019, when Essendon beat Sydney.
That makes 76-66 the 589th most common final score out of 6,607 that have ever occurred in AFL. One point away, 77-66 has happened 7 times and 76-67 has happened 8 times. At one point the score disappeared for 36 years, between 1926 and 1962.