in front of CATER and then put an L on top of the C and a D on top of the R to build BELATED. Restrictions on words are as follows: No words that are always capitalized No hyphenated words No words requiring an apostrophe No abbreviations or symbols No prefixes or suffixes which cannot stand alone No foreign words unless they are in the dictionary The 2008 edition included a new rule: Players may not pluralize a word simply by adding an S at its end. However, such a play is allowed if the S is part of another complete word that is played onto the board in the same turn. This rule is intended to prevent players from capitalizing on one another's words without changing them or playing new ones. Restrictions on stacking tiles are as follows: No stack may be more than five tiles high. No tile may be stacked directly onto a duplicate of itself. At least one tile or stack must be left unchanged; a player may not cover every letter in a word on a single turn. A player may choose to pass at any time, or discard one tile and draw a replacement instead of playing. Once the draw pile is exhausted, the game ends when any player runs out of tiles, or every player passes in a single round. Scoring Any word with no stacked letters scores two points per tile, while a word containing stacked letters scores one point for every tile it contains. In the CATER/BELATED example above, CATER would score 10 points, while BELATED would score nine. Two bonus points are awarded for using the "Qu" tile in a one-level word, and 20 for using all seven tiles in one turn. Players lose five points for every unused tile they hold at the end of the game. History Originally, Upwords was played on an 8×8 square board, with 64 letter tiles. Hasbro Europe later expanded the gameboard to a 10×10 matrix and 100 tiles, to accommodate the longer words frequently used in foreign languages such as German and Dutch. The 10×10 matrix is currently employed in worldwide versions of the game. The board is purposely smaller (has fewer tile positions) than Scrabble to encourage and even force the stacking up of letters upon letters. It does not have special squares such as "triple word scores" and "double letter scores"