https://www.cnet.com/news/fortnite-now-the-biggest-console-free-to-play-game-of-all-time/

Fortnite is riding the crest of an incredible wave. 

It's already winning the Battle Royale war against rival Player Unknown Battlegrounds, but recent info from SuperData research suggests that (in terms of revenue and monthly active players) Fortnite is the biggest free-to-play game on console ever.