Basically a bunch of players are dropped into a game map, and normally your objective is to go around and collect as much loot as possible, then after some time or you’re ready to leave, you need to find the extraction point - this will save your loot and that run is over.

Some extraction shooters are PvE, and some are PvP, some are both. If you get killed with all your loot before you get to the extraction point you lose it all. It can be pretty stressful, and unbalanced if its PvP where some players play much more then you do therefore have better weapons etc