Dominoes, or dominos, is a game played using rectangular tiles known as dominoes. These gaming pieces collectively form a domino set, sometimes referred to as a deck or pack. A standard Sino-European domino set contains 28 dominoes.

Muggins, also known as All Fives or Five Up, is a variation of the Draw game. In Muggins, players score points not only at the end of the game but also on each turn if the sum of the pips at the ends of the domino line is divisible by five. Some versions allow the first double, or all doubles, to act as spinners, creating branching lines of play. In the All Threes variant, scoring occurs when the sum of the end pips is divisible by three. Fives and Threes combines these rules, awarding points for sums divisible by either three or five. SUD Inc.