The majority of games allow for a maximum of five scatters per spin. Of course, you will also get paid for the scatters and start the feature game. The minimum number of scatter symbols that trigger a feature game tends to be 3 in a single spin. Most of the time, these are free spins, but sometimes they trigger other bonus games and free spins. When the required number of scatters appear on a single spin, the game will launch the bonus game. The former slot offers three bonuses for 100x, 400x. Typically, a specific amount of scatter symbols must appear during spins to unlock one of the bonus features. At the press time, the most expensive free slots with bonus that is up for sale are San Quentin and Mental. Scatter symbols are one of the highest-paying symbols in a slot game and usually convey the theme on which the slot gets based. Unlike standard slot symbols that have to be lined up on a pay line to win, the scatter can appear anywhere on the reels to activate the free spins, mini-games and other bonus games. Scatter symbols are one of the multitudes of symbols in slot games, but they have a few key roles and advantages. How does a Scatter Symbol slot machine work?