Pubg was made by an extremely well known modder with a huge following.
So many people have the mistaken impression that marketing doesn't matter. There is a reason companies like Google can make billions of dollars a year selling ads. It is because marketing is actually incredibly important.
This is like rocket fuel for me. Thank you.
So essentially, AA production values and a highly talented game designer who'd perfected the gameplay formula.
What made the game go viral was their marketing strategy - they were one of the first who bought Twitch streamers en masse, and paid a lot of money for that. In fact they triggered a gold rush of a sort with everyone doing it. This isn't to say that the gameplay wasn't good - it absolutely was. But the viral growth wasn't due to that, without marketing it would have been just like the other Greene's games, maybe a bit more popular, but surely not 3 million simultaneous players popular.
And before PUBG, he proved his design viable in the original ArmA Battle Royale mod, in the H1Z1 Battle Royale game mode, and in a myriad other games in which the devs suddenly added battle royale modes - in other words, on another platforms.
PUBG was iterative, it didn't happen overnight.
I don't need some 3rd party platform to sugar coat my creative experience. If it's good, it will ship of its own accord.