Scrabble is a word game that gained enormous popularity in the 1950s. In the game, two to four players may score points by forming words with placement of single letter tiles onto a board divided into squares. Like a crossword puzzle, Scrabble words are read left to right in rows or downward in columns.
The game is sold in 121 countries and is available in more than 30 languages. Approximately 150 million sets have been sold worldwide, and roughly one-third of American and half of British homes have a Scrabble set.
Source; Wikipedia