Scrabble have been sold worldwide and roughly one-third of American and half of British homes have a Scrabble set. There are around 4,000 Scrabble clubs around the world. The game is played by two to four players on a square board with a 15×15 grid of cells (individually known as "squares"), each of which accommodates a single letter tile. In official club and tournament games, play is between two players or, occasionally, between two teams each of which collaborates on a single rack. The board is marked with "premium" squares, which multiply the number of points awarded: eight dark red "triple-word"
Scrabble Showdown set of 16 letter tiles are placed on the board. A randomizer then causes tiles to light up. Each team is allowed to stop the randomizer; a team starts the final round with the regulation value of the tiles that they stop the randomizer on; the number of tiles that the randomizer lights up is the number of "Bonus Scrabble Tiles" that the team had earned from the three previous rounds. This becomes their "head start" score before playing "Scrabble Lightning". The game is played on a regulation Scrabble board with only the double and triple-word score spaces (the double