'Fortnite' popularity keeps growing as free game generates $318M in revenue for May

How much money can a free game bring in? If your game is "Fortnite," the answer is quite a lot. The popular video game notched $318 million in revenue last month for maker Epic Games. It was a new high and a 7 percent jump from the game's $296 million haul in April, according to the latest data from SuperData Research, a research firm that tracks the video game industry. Over the last three months, the game has generated roughly $837 million in revenue.