For 366 days PUBG managed to maintain over a million players per day, at one point reaching a peak of 3.25 million in January. According to SteamDB, last Monday the popular battle-royale title only managed 960,263 concurrent players. Those numbers are still not shabby. Dota 2 is the only other game to have garnered such attention.
The dip came on the same day that the Call of Duty: Black Ops 4 beta launched, which has its own version of BR. While a few PUBG players certainly dropped out to try the CoD beta, Battlegrounds has been on a steady decline since January 13, and the sub-million downturn falls right on that trend line. Call of Duty is just another distraction.