Fundamentally, Scrabble Overturn is a scoring variant on Scrabble (q.v.) The board is a simple grid, into which one places "letter cylinders" which depict a given letter in four colors. If a player employs existing cylinders in making a word, those cylinders are rotated to show the active player's color. Words are scored as played if they score a minimum of 12 points (otherwise zero points) with a bonus for playing all seven cylinders in one turn. A final end-game score is added to individual player scores, but only for words that are all of one color. Multi-color words may be broken down into segments and scored if they are also valid words.