Draw dominoes: round the winner's score to the nearest five

In Draw (and Block, if you play it), the winner scores the opponents' remaining pips rounded to the nearest multiple of five rather than the exact count. A hand worth 23 scores 25; one worth 12 scores 10. It keeps a running score in fives so the target is reached in whole steps, which is the same arithmetic All Fives already uses and is markedly easier to keep in your head across a long evening.