Dominoes is a popular game played with rectangular tiles called dominoes, which are divided into two square ends, each marked with a number of spots or pips. The standard set contains 28 tiles, ranging from double blank (0-0) to double six (6-6). Players take turns placing tiles on a flat surface, matching the numbers on the ends of the tiles. The game can be played in various ways, including blocking games and scoring games. In blocking games, the objective is to be the first to play all your tiles, while in scoring games, players earn points based on the numbers on the tiles left in their opponents' hands.