Three-reel games are some of the most popular online machines that exist. One of the reasons for that is certainly the fact that they support a similar style that exists with machines in classic casinos. This includes the so-called 'old school' display of three columns that rotate separately and merge into one line in which the potential gain is shown. This is exactly another reason why it is considered one of the simplest machine games available. Machines with a game in three reels are ideal for players who are new when it comes to playing online slot machines as well as online casinos.