https://www.gamespot.com/articles/pubg-gets-war-mode-update-on-pc-now-live-for-a-lim/1100-6458701/

A new event mode is starting soon in PlayerUnknown's Battlegrounds on PC. Following the game's latest update, developer PUBG Corp. has announced it is bringing back the popular War Mode for a limited time, and it comes with a few changes this time around. [Update: Following a round of emergency maintenance, PUBG Corp. has shut down War Mode early as it was causing server instability.]

For this iteration of War Mode, players will be grouped into 10 teams of five on Miramar. The battle will be contained within a static safe zone, which PUBG Corp. says will be slightly larger this time around. Players will also spawn with "top-tier" equipment, including a level 3 helmet and vest, two grenades, and one random weapon that could usually only be found in care packages.