Player Unknown's Battlegrounds has been my go to for the past 2 months. It is seriously incredible. I haven't been hooked this hard on a multiplayer shooter since Bad Company 2.
The player/shooting mechanics are very fun, it blends together so many genres that it can be an insane action game one game, and a slow paced crawler/stealth game the next. Your playstyle can shift depending on what you want to do or what guns you find/prefer. The tactical use of terrain is something few games manage and PUBG does it amazingly.
And playing with friends takes the already fun game to another level. The level of communication/cooperation required to truly maximize your gameplay is just astounding. Solos are fun, but the duos and 4 player squad gameplay modes are the best way to play.
I wish I was less lazy about recording game footage, I had a 1v4 ending where I took down an entire squad alone. There's very few games that get my blood pumping like that and PUBG is like an epinephrine drip.
And not only that, the dev support is incredible so far. I rarely see dev teams post information about a bug including a before and after video showing the bug and its fix. And for a game that has already made their money (4 million sold) they are not abandoning the game like every other early acess dev. Yesterday's monthly patch gave me a boost of 15-20 FPS on average in addition to adding significant game content (2 new guns, a new weather setting, and tons of little changes).
If you like multiplayer shooters you're doing yourself a disservice by not playing PUBG.