Explosive Barrels

Explosive Barrels is a feature commonly used in the Grand Theft Auto series since Grand Theft Auto III.

Description
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.

Trivia
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 * In one of the Campbell-John Dick's hidden test maps in Grand Theft Auto IV, its possible to find a stack of 54 explosive barrels.