Naturally, these mushroom-like creatures are back to once again make trouble for Mario.
The Super Mario World variety has gained a backbone since the days of the Mushroom Kingdom. Rather than being merely flattened, jumping on a Goomba will merely turn it upside down, helpless. It can then be picked up and thrown about. A spin jump or collision with another object or being stomped/swallowed by Yoshi will permanently dispose of Goombas.