Taking into account the number of reels in the slot, online games can be conditionally divided into such groups, distributed taking into account the number of reels in the game:
With three reels - this is the classic embodiment of one-armed bandits who often stand in the casino gambling hall. Today they are very popular only among a narrow category of players, most of them are losing popularity, being replaced by modern slots in the field of gambling and the development of Internet technologies.
With five reels – the most popular slot among modern games, due to modern symbols and plots, as well as combinations of winning lines. They attract players with high-quality animation and high jackpots, although they do not fall out as often as every player would like.
With 7 reels - not available in every gambling house, but at the same time has a lot of fans among the players. But it differs in its structure by the absence of bonuses and a minimum of winning lines in the reel.
With 9 reels is also one of the slot machines not often presented in the casino. But it attracts players with non-standard design and exciting bonuses in the game. At the same time, the lines themselves are arranged both horizontally and vertically. Accumulative bonuses and winnings are often installed and dropped out in them.
Taking into account the winning lines, slots can be divided into single–line and multi-line. So in the first case, the machine has one winning line, and rather resembles a retro-style machine. The second option is that the slot machine can have from 3 to 1000, more winning lines.
In addition, there are slots where the game winnings are combined not by lines, but based on a certain combination of symbols. It is also possible to highlight the fact that the jackpot can be both fixed and cumulative.