Dominoes, or dominos, is a game played using rectangular tiles called "dominoes." A collection of these gaming pieces forms a domino set, sometimes referred to as a deck or pack. The 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 game's end but also on each turn if the sum of the pips at the ends of the line of play is divisible by five. In some variations, the first double, or all doubles, can act as spinners, creating branching lines of play. All Threes is a variant where players score if the total pip count is divisible by three; in Fives and Threes, scoring occurs if the total is divisible by three or five. SUD Inc.