Games are vital to our health, well-being, social development, intelligence, creativity, innovation and problem-solving ability. Play is a state of mind that makes us smarter and more adaptable. These are the conclusions made by Stuart Brown, a leading expert in the field of game psychology, after studying more than six thousand stories of a variety of people - from serial killers to Nobel laureates. After reading his book, you will never again be able to look at games as something that distracts you from your work. It will open the door to the world of a successful and happy life. Published in Russian for the first time.