Scrabble of points for each lettered tile is based on the letter's frequency in standard English; commonly used letters such as vowels are worth one point, while less common letters score higher, with Q and Z each worth 10 points. The game also has two blank tiles that are unmarked and carry no point value. The blank tiles can be used as substitutes for any letter; once laid on the board, however, the choice is fixed. Other language sets use different letter set distributions with different point values. Tiles are usually made of wood or plastic and are square and thick,
Scrabble letter distributions or both. This is not an official version of the game, although Hasbro did create their own licensed "Star Trek Scrabble" game in which players can receive bonus points by playing Klingon words. "Star Trek Scrabble" uses standard English-language tiles. There are three kinds of Latin-language Scrabble sets developed by three authorities in the language. The first distribution, developed by the Centre for Medieval Studies of the University of Toronto, uses these 100 tiles: An extension of the first distribution for Latin Paleography, developed by the Centre for Medieval Studies of the University of Toronto, uses these 120 tiles: The