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 rotating mechanisms and personalized graphics. An edition has been released (in association with the RNIB) with larger board and letters for players with impaired vision. The colours on the board are more contrasting and the font size is increased from 16 to 24 point. The tiles are in bold 48 point. An introduction to tournament "Scrabble" and its players can be found in the book "Word Freak" by Stefan Fatsis. In the process of writing, Fatsis himself progressed into a high-rated tournament player. The "Scrabble Player's Handbook", edited by Stewart Holden and written by an international group of tournament players,