https://www.gamespot.com/articles/e3-2018-fortnite-reaches-a-massive-new-player-mile/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.