Modern slot machines offer a wide variety of bonus features and special symbols that can greatly improve gameplay, making them one of the most exciting features. Wild symbols are one of the most prevalent special featuresrummy slots; they can help form winning combinations by substituting for other symbols (apart from scatters). Players highly value wilds because they have the ability to transform an otherwise unsatisfactory spin into a profitable one. In order to increase winning potential, many games also have expanding wilds or stacked wilds, which can expand across multiple positions or cover entire reels. Numerous slot games also feature exciting bonus rounds.
