Why Minecraft is much more than a video game

The creators of Minecraft revealed this month that the video game of construction of buildings with blocks has more than 33 million users. And many of them are children, obsessed with what happens on the screen. Their parents observe them stupefied, but perhaps it would be more appropriate for them to sit down and play with them.

For Liz Cruddas - whose two children Oliver, 15, and Will, 9, are other fans of the game - it's incomprehensible that time they spend glued to YouTube.

"I do not understand why they want to watch those videos, they're so fascinated watching these people play Minecraft," she explains.