A blank is zero in the count, not absent from the game
In ordinary pip-count scoring, a domino’s value is the total number of dots on its two ends. A blank end contributes zero, so a blank-blank tile has a pip total of zero. That makes it behave like zero in the arithmetic: it adds nothing to a hand’s pip sum.
But the tile is still a playable piece. Its blank end can match another blank, and having one may help a player continue—or leave them unable to play if the needed match never appears.
The rules decide what “worth zero” means
Many domino games use the pips left in a player’s hand when a round ends to calculate a penalty or award points. Under that method, a blank tile adds no pips to the total. Other games use different scoring rules, so a tile’s practical cost depends on the version being played.
That distinction is the useful one: zero pip value does not mean zero consequence. A blank may contribute nothing to a hand’s arithmetic while still occupying a place in it, shaping which plays are possible, and affecting whether a player can get rid of their tiles.
