https://www.polygon.com/2017/9/8/16273604/pubg-playerunknowns-battlegrounds-concurrent-players-one-million-steam

There are more than one million Steam users playing Playerunknown’s Battlegrounds right now, according to the PC games platform’s stats page — a rare feat that should come as no surprise to those tracking the game’s meteoric rise.

Last weekend, PUBG topped Valve’s Dota 2 in concurrent users on Steam for the first time. The multiplayer battle arena game has held the top spot for a long, long time — it was the first game to ever hit one million concurrents on Steam — but PUBG has now far surpassed its current player count. As of writing, there are 1,005,000 people playing the survival game; meanwhile, 745,000 are logged into Dota 2.