https://www.gamespot.com/articles/fortnites-battle-royale-mode-had-37-million-player/1100-6453962/

Fortnite's Battle Royale mode is proving popular, it seems. Developer Epic Games announced on Twitter that the game reached 3.7 million players on Sunday, October 8. At its peak that day, Battle Royale had 525,000 concurrent users, Epic added.

Those figures cover North America, Europe, and Oceania, and are presumably the sum of players across Xbox One, PlayStation 4, and PC. The numbers are huge, and even more evidence that people are excited about the Battle Royale experience, wherever they can find it.