Scatter symbols are special icons found in many slot games that can trigger bonus features or free spins, regardless of their position on the reels. Unlike regular symbols, which need to line up on a payline to create a winning combination, scatter symbols can appear anywhere on the screen to activate rewards. When players land a certain number of scatter symbols, they often unlock additional gameplay options, such as free spins or multipliers. This feature adds excitement and increases the chances of winning, making scatter symbols a popular element in both online and physical casinos.