This is an exploding barrel. You can tell it explodes because it's red.In some action games and many first-person shooters, explosive barrels or crates are present. Generally red 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. Sadly, your own AI comrades may decide to take cover behind the barrels too, if they're as dumb as the enemies. In platform games, the nature of exploding barrels usually varies somewhat. Instead of being a means to take out a large group of enemies, they usually pose a hazard to the player that should be avoided. Exploding Barrels is a sister trope to Crate Expectations and these tropes sometimes combine to form Exploding Crates. This is a well-worn trope, but with no signs of going away; sure, the presence of these barrels may be inexplicable at best, but players will never get tired about having a convenient source of Stuff Blowing Up. In Real Life, storing explosives requires special permits, separation of batches and so forth to prevent "Pepcon" and AZF type explosions. Video game environments are not required to comply with such regulations. See also Every Car Is a Pinto: cars often play a parallel role to barrel as a source of Stuff Blowing Up — with similar burn-then-explode dynamics. Particularly in games where barrels would look really out of place. This too can be combined if the game has the proper scale into exploding fuel trucks.