The explosive barrels device its a common feature in video games, it can be found in nearly every genre. They are commonly present in action games and many first-person shooters. They are generally red or yellow and marked with some sort of warning, they will explode when shot and kill any nearby enemies. They are sometimes located conveniently near a horde of enemies. They will also explode in Grand Theft Auto: San Andreas if they are driven into by a vehicle.