Have you ever wondered where the iconic bar, fruit, and bell symbols on slot machines came from? Or who invented the first slot machine and what it looked like? Dive into the fascinating history of slot machines and uncover the stories behind their symbols and evolution.
Today, whether you’re spinning the reels at a land-based casino or enjoying online slots in Portugal, platforms like Oscar Spin provide a safe and reliable way to experience the timeless charm of classic machines in a modern, digital format.
Let’s take a closer look at the origins and meanings of these iconic symbols.
Understanding slot machine symbols
Slot machines work by spinning reels with symbols, and players win by matching symbols along paylines. Each symbol has a value, often tied to the game’s theme. Modern slots feature bonus symbols like wilds and scatters, which unlock extra features and rewards.
With advancing technology, slot games now offer complex mechanics and exciting bonuses while keeping the classic thrill of spinning reels. Be sure to check the paytable before playing to understand payouts and features.
The history of slot machines and their symbols
While online slots are a modern invention, slot machines have been around for over a century. Today’s designs still draw from the mechanics of the earliest machines, which revolutionized gambling.

The first slot machine: A Game of poker
In 1891, Sittman and Pitt from Brooklyn created a gambling machine with five drums displaying ten playing cards. Players pulled a lever to spin the drums, aiming to form poker hands. To make wins rarer, two cards were removed, and bar owners could rearrange the cards to further lower the odds.
Prizes weren’t automated but were set by the establishment, ranging from free drinks to cash. While popular, the machine couldn’t automate payouts due to the complexity of poker hands.
Charles fey and the liberty bell
In 1895, Charles Fey, a San Francisco mechanic, transformed gambling with the Liberty Bell. This machine had three reels and five symbols: horseshoes, diamonds, spades, hearts, and the Liberty Bell. Its simple design allowed for automatic payouts, making it hugely successful and launching the mechanical gaming industry.
The term “slot machine” came from the coin slot used to operate them. They were also nicknamed “fruit machines,” “pokies,” and “one-armed bandits.”
The evolution of slot machines
For decades, mechanical slots dominated casinos and bars. During gambling bans, prizes like gum replaced cash payouts, leading to fruit symbols that remain iconic today.
In the 1960s, electromechanical machines replaced purely mechanical ones, offering better reliability. Later, video slots emerged, replacing physical reels with virtual ones. This shift allowed for more reels, paylines, and bonus features, expanding gameplay options.
The modern era of online slots
Online slots have taken the concept further. Software-based gaming allows for incredible complexity, with thousands of paylines, dynamic reels, and evolving themes. Developers now experiment with creative designs, making online slots more engaging and imaginative than ever before.
From poker-inspired beginnings to today’s digital innovations, slot machines have evolved through creativity and the thrill of chance.
Symbols in slot machines: A guide
Slot machines feature a range of symbols, reflecting the diversity of games. While classic slots are simple, modern games include bonus symbols and unique designs.

Classic slot machine symbols
Classic slots and fruit machines are inspired by the Liberty Bell. Some of the most iconic symbols include:
- Fruit symbols: Cherries, lemons, oranges, and grapes, which date back to the origins of slot machines.
- BAR symbol: Based on machines that dispensed gum, the BAR symbol represents gum packs and offers higher payouts than fruit.
- Lucky number seven: A symbol of luck, single or triple sevens often offer high payouts.
- Liberty bell: Inspired by the first slot machine, the Liberty Bell still appears in modern slots, offering high payouts.
Modern slot machine symbols
Modern slots have expanded beyond the Liberty Bell’s simple design. Common symbols include:
- Playing card symbols: Jacks, Queens, Kings, Aces, and lower-value cards like tens and nines.
- Thematic symbols: Modern slots often follow themes, featuring symbols like pirate flags, TV characters, or Egyptian hieroglyphics.
Bonus symbols: Unlocking extra features
Modern slots include bonus symbols like Wilds, Scatters, and Sticky symbols to enhance gameplay. These symbols can create winning combinations, trigger bonus rounds, or stay on the reels for extra spins, adding excitement and strategy.
From classic fruit symbols to creative themed designs, there’s always something new to discover in the world of slot machines!