Also called the "combat shotgun," the "double-barreled shotgun," or even just abbreviated to "SSG," the Super Shotgun is a sawed-off, break-action, double-barreled shotgun that wasn't in the original Doom but was a new weapon featured in Doom II. The Super Shotgun takes the same ammunition as the regular shotgun, but uses two shells per shot, firing 20 pellets instead of the regular shotgun's 7. It therefore causes much more damage than the regular shotgun, although conversely its firing rate is considerably slower than the regular model - approximately twice as long. This means that any enemy that isn't killed by the first shot has plenty of time to retaliate before the next shot can be fired. Like all shotguns, the Super Shotgun also proves more effective the closer to the target it's fired.
Doom 3 features both a regular shotgun and Super Shotgun as well. Other than a different appearance, it's essentially the same as the Doom II Super Shotgun: powerful but slow to reload, making it a great weapon for crowds of weak enemies or shooting a single enemy with a massive blast at close range.