Has an NBA game ever ended 88-77?
It has. 88-77 has been a NBA final 25 times in 77,318 games. The first was Minneapolis Lakers beat Baltimore Bullets on December 28, 1949; the latest was Minnesota Timberwolves beat New Orleans Pelicans on January 29, 2014.
That makes 88-77 the 861st most common final score out of 3,189 that have ever occurred in NBA. One point away, 89-77 has happened 33 times and 88-78 has happened 27 times. At one point the score disappeared for 30 years, between 1953 and 1983.