Mystery Words is a fast paced crossword puzzle style word game. However, game play does not require deciphering word definitions. Instead, vocabulary skills, letter hints and partially filled crosswords are used to discover the "Mystery Words" needed to complete each puzzle. The game features thousands of unique all-word crossword puzzles for each supported English dialect (currently USA, UK, Australia, Canada and India) and has 3 difficulty levels available - Easy Grids, Harder Grids (default) and Hardest Grids.