What Makes Games Like 'Angry Birds' So Addictive?

Angry Birds — a mobile phone game in which players use a slingshot to propel birds at tiny little green pigs — has been a runaway hit since its 2009 release, with more than 700 million downloads, a TV show and a feature film in the works. It isn't alone. NPR's Neal Conan talks with New York Times Magazine critic-at-large Sam Anderson about people's fascination with — and addiction to — what Anderson calls "stupid games."