I quite like PUBG as a team game - it’s quick and most of it is spent skulking around strategising so it works better as a social experience than the constant action of a more deathmatch focussed FPS. It’s incredible how big it’s got though - it grew from a mod and is still janky as all hell despite its claim to be ‘esports ready.’ And I can never be arsed to play solo.
Fortnight overtook it by having some decent systems (particularly the building aspect) that happened to suit the battle royale format well and also having a degree of polish PUBG lacks. It’s one of those ‘so obvious I can’t believe it hasn’t been done before’ ideas that every big/medium sized developer currently trying to get a piece of.