![Tom Chatfield: 7 ways games reward the brain](https://pi.tedcdn.com/r/pe.tedcdn.com/images/ted/87897eb99c1b0061cca8f820dfe97a5bdb22d813_1600x1200.jpg?h=200)
We're bringing gameplay into more aspects of our lives, spending countless hours -- and real money -- exploring virtual worlds for imaginary treasures. Why? As Tom Chatfield shows, games are perfectly tuned to dole out rewards that engage the brain and keep us questing for more.