Through the years of evolution, slot machines have changed significantly regarding the outlook of slot symbols. Interestingly, a primordial fruit machine did not contain fruits! First, these were diamonds, spades, and hearts taken from cards. They were changed then to sevens, a horseshoe, and a bell.
Fruit symbols appear a bit later - after a massive ban imposed on all ‘one-armed bandits.’ That new design with chewing gums serving as prizes had to improve the slots’ reputation somehow, but the principles of their functioning did not change.
Nowadays, slots embody a wide variety of symbols. They depend on a slot theme linked to whatever topic, for instance, a popular legend, TV series, a music band, sports events, etc.
However, all slots tend to contain a specific group of symbols. Therefore, it is imperative to understand their essential functions and thus play slot machines in general.
These are the most common types to see in slots. However, developers tend to add innovations to their products constantly. So, no one knows which new features the following brand new online slots might have.