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A Complete Guide to Online Slots Gambling

Slots are the most popular online games so far. There is an overwhelming number of slots online which fall under different categories. By understanding how online slots work, it becomes easier for you to identify which is the most suitable for you. You can choose a style, theme, and budget that most appeals to you where you can pay and play whenever you want!

A Brief History of Slot Machines

Several decades ago, all slot machines were mechanical. They were powered by levers, gears, stop systems, braking reels, and sensors that showed when the payment was due depending on the symbol combination. The reels were controlled by disks with deep notches. Today, the mechanical slot machines have been replaced by microchip powered machines.

The introduction of a modern slot meant that all the mechanical aspects of the older version were replaced. The new models use microchips that control the spinning action from the slot’s motherboard. Once you press the spin button, the computer system inside the slot will select the numbers through the Random Number Generator (RNG). The selected number is then fed to the computer corresponding with the symbols on the reels. The slot then spins the reels and a combination of three or more matching symbols reward a win.

Key Features of Slots

Slots tend to be the most diverse online casino games. They offer gamers with remarkable themes, a different number of reels, bonus rounds, and other things that worth mentioning. We will look at them here:

Reels and Rows

Reels and Rows are the basic structure of a slot. Unlike the first slot machines that featured only three reels, the modern slots boast several reels and rows. The most prevalent and common slots feature 5 reels and 3 rows. It is also possible to come across slots that extra rows and reels on the sides, bottom, and top.


In simple terms, a pay line is the combination of identical symbols that you get on a grid. All wins are attained as a result of paylines, which are displayed in the paytable or on the side of the slot. There are some slots that will allow you to select the number of paylines you want to play with. In such a case, they are referred to as Bet Lines.


The variance or volatility of a slot determines your gambling experience and even the chances to win. The variance comes in three types:
Low variance: low variance slots offer you a long betting process. Small wins occur fairly often and the big wins will take time before they occur.

High Variance: slots with a high variance have big but infrequent wins.

Medium Variance: these create a good balance between low and high variances. These slots offer you a slightly higher chance to land big wins. But you still can get small to average wins.

Return to Player (RTP)

RTP is the percentage of money that players are expected to get back. Normally, the RTP of online slots ranges from 80 to 99 percent. The higher the percentage, the higher the amount you can expect.


When playing slots online, there are numerous things that you need to be aware of. It is not enough to just place your coin and spin the reels. Knowing and understanding how everything works is important. You can start by understanding some of the basics that we have mentioned here before you can jump to the other deeper aspects.