https://www.gamespot.com/articles/e3-2018-fortnite-reaches-massive-new-milestone-aft/1100-6459808/

We have always known that Epic's Fortnite is massively popular, but now the developer has quantified the game's success. In less than a year, the game has reached a staggering 125 million players, the studio said in a blog post. It is not clear how this figure breaks down between the paid Save the World game and Battle Royale, but no doubt Battle Royale is more popular.

The announcement came at E3 2018 this week during the Fortnite Pro-Am that saw big-name streamers paired up with celebrities to play the game. As part of this, Epic also announced more details on the $100 million Fortnite eSports funding that it announced in May.