🎲 Dominoes: All Fives

After every tile, add the two open ends of the line. If the total is 5, 10, 15 or 20, you score the total divided by 5.

Example: the line's ends are 6 and 4. That adds up to 10, a multiple of 5, so the player who just played scores 2 points. If the ends were 6 and 3, the total is 9 and nobody scores.

A double lying at an end counts both halves: a 3-3 at one end and a 4 at the other is 3 + 3 + 4 = 10, which scores 2.