Have fun while sharpening your wits with mazes; head games and word games; riddles and riddle-culous; mountain messages; find the birthday; crossword puzzles; creating new words; becoming a mind reader; ha ha hieroglyphics; number magic; and lots more. The included puzzle pen alone will keep any Brainiac enthralled trying to match the colors. For ages 8 and up. Concealed wire-o binding, hardcover. 7-1/2'' wide x 8-1/4'' high; 128 pages.