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,
Words with Friends added - this contrasts with the 50 bonus points in Scrabble. The different arrangement of premium squares can lead to scoring situations that would be rare or impossible in a typical Scrabble game. For example, it is possible to place a new word that simultaneously covers a triple letter score (TL) and a triple word score (TW), or a new word that covers a double word score (DW) and a triple word score (TW), which would be near impossible or impossible in a Scrabble game. The game ends when a player plays every tile in his or her rack, and