
PlayerUnknown’s Battlegrounds (PUBG) is an online multiplayer battle royale game developed and published by PUBG Corporation, a subsidiary of South Korean video game company Bluehole. The game is based on previous mods that were created by Brendan “PlayerUnknown” Greene for other games, inspired by the 2000 Japanese film Battle Royale, and expanded into a standalone game under Greene’s creative direction. In the game, up to one hundred players parachute onto an island and scavenge for weapons and equipment to kill others while avoiding getting killed themselves. The available safe area of the game’s map decreases in size over time, directing surviving players into tighter areas to force encounters. The last player or team standing wins the round.

Each match starts with players parachuting from a plane onto one of the four maps, with areas of approximately 8 × 8 kilometres (5.0 × 5.0 mi), 6 × 6 kilometres (3.7 × 3.7 mi), and 4 × 4 kilometres (2.5 × 2.5 mi) in size.[2] The plane’s flight path across the map varies with each round, requiring players to quickly determine the best time to eject and parachute to the ground.[1] Players start with no gear beyond customized clothing selections which do not affect gameplay. Once they land, players can search buildings, ghost towns and other sites to find weapons, vehicles, armor, and other equipment.

Every few minutes, the playable area of the map begins to shrink down towards a random location, with any player caught outside the safe area taking damage incrementally, and eventually being eliminated if the safe zone is not entered in time; in game, the players see the boundary as a shimmering blue wall that contracts over time.
