Generally speaking, the most important thing about a slot machine is the ability to pay out a large sum of money. This is achieved through the ability to spin the reels. The symbols on the reels may represent many different symbols, so a winning combination can occur even if the symbols are not perfectly aligned. In addition, many slot games have a bonus feature, usually aligned with the theme. A bonus round may award a player with a set number of coins or the chance to win a larger payout.