Cardinal 20 Domino Games, DRAW version. 28 tiles, seven each. First seat opens each hand with any tile. Match either end; doubles are crosswise without branches. If blocked, draw until playable or empty; pass only with no legal tile and an empty boneyard. Going out scores all opponents’ pips. If all pass, each player scores the difference against every higher-pip hand. Add round scores; once anyone reaches 100, highest total wins. Blanks are zero, not wild.

Rooms expire 24 hours after the last action. Refresh to reconnect; leaving ends the current game.