Dominoes are a series of tile-based games that use rectangular "domino" tiles. Each domino is a rectangular tile with a line dividing its face into two square ends. Each end is marked with a number of spots (also known as pips, pinch or dopa) or blank. The backs of the dominoes in a group are indistinguishable, either blank or have some common design. Dominoes make up a domino, sometimes called a deck or backpack. The traditional Central European dominoes consist of 28 dominoes, including all on-site combinations between 0 and 6. The Domino Set is a universal game device that is similar to playing cards or dice because you can play a variety of games with a single set of games.