CBS Sunday Morning – MineCraft is a required class for every 7th grader in this school. How about your local school?

One of the bestselling video games of all time has no guns and no blood. It doesn’t keep score. And the graphics make no attempt to look lifelike. It’s called Minecraft, and since its debut in 2009, it has sold more than 176 million copies. More than 91 million people play it every month.

Correspondent David Pogue took Minecraft out for a spin with his 14-year-old son, Jeffrey, who described the game as “a virtual world where you can build and destroy things and play with friends.”

The Minecraft game-design class is a required course for seventh graders. “We’re taking kids in an environment that they love – they love games – now they’re making their own games,” Isaacs said.