Game, Set & Math is a collection of pieces that Ian Stewart wrote for Pour la Science, the French edition of Scientific American. If you are familiar with his Mathematical Curiosities or his Hoard of Mathematical Treasures, then you already know the engaging style with which he makes even difficult mathematics accessible for a broad readership. Game, Set & Math has however substantially fewer topics ("only" twelve) than the other two books, but they are discussed much more deeply. It can be regarded as a predecessor to his Math Hysteria and How to Cut a Cake. I particularly liked the chapter on the random walk with absorbing boundaries called The Drunken Tennis-Player. It shows why a tennis-player that is only slightly better than his opponent almost always wins their matches. The bridges of Köningsberg, Fermat's last theorem, the Sierpinski gasket, the Möbius band, and the Klein bottle will be familiar to many readers, but the book shows surprising links with other areas of mathematics. Most chapters have exercises or suggestions to explore the topic of the chapter in more depth. Each chapter has also a list of references for further reading. This is an excellent book if you are interested in recreational mathematics and like to do some work in it yourself.