In the last (more or less) 2 minutes people will be teleported to the middle. Around the middle there will be a barrier.
A lot of Skywars games I’ve played, people would keep running until the timer ends, or hide somewhere in the map. I dont always find a compass and can’t always catch people when they run. So my idea is that at (more or less) the last 2 minutes everyone gets forced to go to the middle. This happens by either teleporting them there and putting a border around the middle, or having a border that slowly starts closing in.