"Today we’ve got a very big announcement: With Xbox and PC sales combined, PUBG has now sold over 50 million units worldwide. With PUBG Mobile included, there are now over 400 million registered PUBG players worldwide. Over 87 million people play PUBG every day across all our platforms."
They announced the 30 million milestone in late december, so it has sold 20 million additional units in the last six months (not including mobile).
The game is also going on sale for the first time since it's release, so the sales are likely to continue:
"To celebrate these new milestones, we’re putting PUBG on sale on Steam from June 19th (later today!) through July 5th. If you want to pick up the game for the first time or gift it to a friend, you’ll be able to grab it for just $19.99 (33.33% off the normal price). "
Bet with Intrinsic:
The Switch will outsell 3DS (based on VGchartz numbers), according to me, while Intrinsic thinks the opposite will hold true. One month avatar control for the loser's avatar.