Machines with rotating reels
A machine with rotating reels has reels of different sizes that rotate about a central axis. Typically, these reels are of a large diameter. Alternatively, they can be of smaller diameters. These reels are connected by a drive mechanism such as a stepper motor. This allows them to be rotated incrementally around known stops. Computer processors control the operation of these machines. They also determine the sequence of images on the reels when the machine reaches its stop position.
Machines with rotating reels can have multiple side walls. The side walls may be flat or have ribs or corrugations. The outer walls may extend to different degrees from the rotating reels.
Machines with multiple “lines”
As slot machines evolved, many different variations were introduced, including those with multiple “lines.” These games, which feature multiple lines, are more popular than their single-line counterparts, because they offer players an additional way to maximize their chances of winning. Most machines pay out when matching symbols land on an active payline, and the more “lines” that are active, the greater your chances of winning.
Multi-line slots offer more ways to win, and many more options for different themes. Some have themes from licensed movies and television shows, while others are based on mythology. Some machines feature as many as 50 different betting lines, which means more possibilities for winning.