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Why 'Fortnite' is taking the gaming world by storm

If you haven't seen much of your teenage son, nephew or neighbor lately, it's probably because he is playing Fortnite. It's the hottest video game for PCs and consoles and it's now on mobile.

Yahoo Finance's Seana Smith, Dan Howley, Ethan Wolff-Mann, Pras Subramanian, and Julia LaRoche discuss.