https://www.polygon.com/2018/4/11/17226442/pubg-update-circle-speed-blue-zone-damage-miramar-map-changes

PlayerUnknown’s Battlegrounds developer PUBG Corp. announced details of a new patch today, one that promises to significantly alter the pace of the game.

In every battle royale-style game, there’s a zone of death that constantly creeps in from the edge of the map. In Battlegrounds, that outside force is called the “blue zone,” which constantly pushes heavily armed players closer and closer together to give the game its trademark, pulse-pounding tension. Tweak that aspect of Battlegrounds, and you fundamentally change its overall pace.