Scrabble variants require scientific notation, depending on the board. Points are calculated automatically and displayed next to definitions of words as they are placed. Anadrome has a tile-earning mechanic and board editor, allowing users to create publicly available boards for Scrabble, Words with Friends, and their own custom designs, making it a superset of crossword-style games. On the game show "Scrabble Showdown", two teams play various games in order to win prizes including a vacation to anywhere in the world. Gosum is similar to Numble. Users place sequences of numbers and equations, using the four main arithmetic operators (addition, subtraction, division, multiplication)
Scrabble letter distributions not allowed. Official rules treat the "Q" tile as just one letter, but usually Catalan players use the "Q" tile like the "QU" digraph and all Catalan Scrabble Clubs use this "de facto" rule. "K", "W", and "Y" are absent because they are only used in loanwords or, in the case of "Y", the digraph "NY". Blanks cannot be used to represent "K", "W", or "Y". There is a Catalan Scrabble clone which uses the same 21x21 board as Super Scrabble. Croatian-language Scrabble sets use the following 103 tiles: "Q", "W", "X" and "Y" are not included, as Croatian does