399 Games, Puzzles & Trivia Challenges Specially Designed to Keep Your Brain Young.

$15.95 (as of September 24, 2018, 3:39 am) $6.15

A lively mix of challenges, riddles, brainteasers to stimulate neuron growth!
Based on scientific research – concentrated cognitive efforts increase functioning
An illustrated game book specifically created to cross-train the brain

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