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 "deluxe" sets still do. Both games are made by Winning Moves and feature smaller, plastic tiles that are held in place on the board with little plastic posts. The standard version features exactly the same 100 tiles as regular "Scrabble". The Tile Lock Super Scrabble features the same 200 tiles that are in Super Scrabble. Editions are available for travelers who may wish to play in a conveyance such as a train or plane, or to pause a game in progress and resume later. Many versions thus include methods to keep letters from moving, such as pegboards, recessed tile holders