The different types of slot machines
The first slot machine was invented at the end of the 19th century and since then there have been a lot of imitators. Originally the machines were based on a 3-reel system with a single payline. Over the years, however, they have been modernized and their game system expanded by more roles and paylines. More lines mean more combinations and more profit opportunities. This is the main categorization we can make for slot machines – they are either 3- or 5-reels. From this point on, there are literally thousands of different variations and themes.
There are also slots linked to a progressive or fixed jackpot. Unlike the in-game jackpots, the sum of a progressive jackpot increases continuously, depending on the number of players and the number of players. Did you know that Cash Splash from Microgaming was the first progressive jackpot slot that went online. Another good example is Mega Moolah, which has been included in the Guinness Book of Records for the largest jackpot ever online (€ 17,879,645.12).
Winning combinations & special symbols
Slot machines have 3 or 5 reels covered with different symbols. As a rule, paylines run through the reels, forming the so-called winning pattern of a machine. For most slots, at least three identical symbols must be turned on one after the other to make a profit. The payout will be made according to the payout table, which is clearly visible on each slot. In addition to the standard symbols, there are also special symbols that play a special role and allow additional profits.
Wild – In its simplest form, this symbol can replace all other symbols except for the scatter, completing paylines. Very often, all wins are thus given a 2x multiplier with a substituting wild card.
Scatter – These special symbols, in turn, can unlock either free spins or bonus features, resulting in high profits in most cases. Free spins are triggered by 3 scatters on the screen. For some slots, seek as a book of Ra, one symbol (the book) acts as a wild and scatter at the same time.
Multipliers – These symbols multiply your line wins. A good example would be the 3D slot game Gonzo’s Quest, where wonderful multipliers of up to 15x wave.