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Online Slot Terminology and Slang

Online Slot Terminology and Slang

Online slots are undoubtedly the most widely played games in any given situation not to mention that most online casino bonuses are slots related.

Online Slot Terminology and Slang

But for beginners on these machines, it is important to try to understand some common terminology. So, to avoid getting into some awkward situations, please read this guide to understand some common

A brief history of online slot machines

First of all, slots are a classic casino game where players can spin the reels and wait for the outcome. The reels usually have symbols that land randomly after a bet is placed and the reels are spun.

That is to say, the history of these machines dates back to the 19th century. At that time, they used gears and springs to produce results after spinning the reel.

However, modern computerized slot machines have come out of the woodwork to make things easier. Instead of using springs and gears to generate results, these machines use RNG (Random Number Generator) software.

RNG generates millions, if not billions, of results every second. Now, this eliminates any possibility of cheating at the best online casinos.

Slot Terminology

If you really want to play these games, then there are hundreds, if not thousands of slot machine terms to master. However, this page will list only some of the most common ones. They include.

3/5 reel slot

Most online slot machines usually come with 3 or 5 reels, although some can have 7. Either way, it refers to the vertical column of spins with symbols. Usually, classic slot machines have only 3 spins.

Payment Line

A payline is a line through the reels where symbols seem to form winning combinations. Some games require the player to create a winning combination from left to right, and vice versa. However, others can have vertical and diagonal paylines.

Auto Play

As the name suggests, AutoPlay is a slot machine feature that allows gamers to preset the game to automatically spin the reels several times. If you plan to play the game for a long time, this will make the job much easier.

Free Spin

You don’t need a tutor to tell you what free spins are. Free spins are bonus spins that players get on the slots after matching certain symbols.


The multiplier is the number of times the machine is multiplied by the initial bet. For example, landing on a specific symbol can multiply your original bet by two.


This is arguably the greatest innovation in the world of online slots. Developed by BTG (Big Time Gaming) in 2017, the mechanism offers players millions of ways to win with payouts online.

Real Time Transfer Protocol

RTP (Return to Player) is the maximum return that a player can get from a single round of betting. For example, a game can offer an RTP of 95%, where the maximum amount a player can win from a bet of 100 coins is 95 coins.

Variance / Volatility

Slot variance or volatility is the frequency of payouts. Low variance machines pay out more frequently, but in lower amounts. The opposite can be said about high variance slots.


Scatter is the slot symbol that triggers the bonus spin round. Usually, landing a specific number of scatters will activate a free spin round.


The Hundred Match symbol is a slot symbol that substitutes for other standard symbols on the payline (except for the scatter). Therefore, players have more chances to create winning combinations.


There you go; these are the most common online slots terms that need to be mastered. But as initially stated, there are so many words that listing them all in one post is almost impossible. So, as you progress, keep playing and learning.

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