Game On! Nine IQ Challenges. Nine Timed Quizzes to Test Your Cranial Fortitude, By Philip Carter. 3 books - 180 questions. 3 tests of 20 questions in each book. Scoring information. The perfect, portable, puzzle-lovers' companions! These portable books challenge your skills with words, math, and logic entertaining your brain while fostering mental acuity. Get your game on! Philip Carter is the author of over 100 brain-building books for adults and children. 3 game books in each banded set! Package measures 3 1/2" wide x 5" high x 1/2" deep.