Every few minutes, the playable area of the map will begin to shrink to random locations. Any players caught outside the safe area will be gradually harmed, and will eventually be eliminated if they do not enter the safe area in time. This results in a more restricted map, which in turn increases the chances of encounters. During the battle, random areas of the map are highlighted in red and bombed, posing a threat to players remaining in that area. In both cases, players are warned minutes before so that they have time to move to safety places. A plane will occasionally fly randomly over various parts of the playable map, or anywhere the player uses a flare gun, and drop a loot bag containing items hard to be obtained elsewhere. These packages emit a highly visible signal, attracting players to pursue for it and triggering further confrontation. On average, a full round takes less than 10 minutes.