Has a FIBA World Cup game ever ended 68-67?
Exactly once. On July 31, 1998, Spain beat Argentina 68-67, and no FIBA World Cup game before or since has ended that way. When it happened it was a scorigami, the first 68-67 in league history.
That makes 68-67 the 475th most common final score out of 1,178 that have ever occurred in FIBA World Cup. One point away, 69-67 has happened 4 times and 68-68 has happened never.