Left: burning gunpowder; middle: non-burning C4; right: burning gas.

Explosives is a category of extremely flammable substances. The explosives include gunpowder, C4, and Gas. All explosives emit Heat while burning and destroy any flammable objects nearby. The explosive is consumed in a rectangular fashion. Gunpowder is the only explosive which emits Fire while combusting.

Oil does not count as an explosive as the burning pattern is different and it burns too slow.