TMCnet Feature
June 29, 2021

The Technology that Makes Online Slots Safe and Reliable

At first glance, online slots might seem like incredibly simple machines. After all, for people who are getting into online gambling for the first time, slot machines seem to be the simplest option of them all. It’s not like poker, blackjack, or baccarat that has so many complicated betting options and rounds. With online slots, all you have to do is place a bet and pull on the lever or push on the button. There’s really not much to it when it comes to gameplay. However, what do you really know about the machining and the programming that’s behind these online slot games? How complex are they really? Is it even safe for you to be gambling on these online slot machines in the first place?

This article is going to take a deep dive into the complex programming and arithmetic that powers your favorite slots games. Just what makes the spinning of those vibrant and magical reels possible in the first place. This is so you can get added peace of mind whenever you decide to play with your favorite slot games at your usual online casinos.

Random Number Generator (RNG)

At the heart of it all, any slot game, or any online casino game for that matter, is run by a Random Number Generator algorithm or RNG. An RNG is essentially a sophisticated piece of code that all online casinos need to have in order for them to be granted licenses and certificates to operate. These RPGs are algorithms that are designed to have online casino games simulate the mathematical conditions of real-life casino games. Essentially, they are in charge of completely randomizing the order of the cards, reels, or spins in a game to ensure that no one is getting cheated out of anything. It leaves everything up to chance.

In order for casinos to get a proper license to operate, they have to present a working RNG code to third-party overseers and regulatory bodies. Typically online casino platforms will outsource the development of these algorithms to third-party developers. 


A return-to-player rate or RTP is something that is unique to slot games. Essentially, it’s a program that calculates just how much a particular slot machine will return to a player relative to the total number of bets taken in. So, for example, if a certain slot machine has taken in a total of $1000 and has allowed its players to win $987, then it should have an RTP of 98.7%. Essentially, the RTP is used by many slot players to determine their chances at winning on a particular machine or not.

However, it’s important to note that the RTP doesn’t necessarily calculate the likelihood of someone winning. Just because a slot machine has an RTP of 98.7% doesn’t mean that you’re going to win 98.7% of the time. It just means that throughout the set recording history of a particular machine, it has returned 98.7% of the money that it has taken in. It doesn’t take into consideration how many times players have played. It only calculates based on the amount of cash that has gone in. 

Graphic Design and Illustration

Of course, all of the technology that we have discussed so far is the stuff that is working behind the scenes. In the world of programming, this is often referred to as backend software development. However, there is also the kind of programming that most people tend to appreciate more, and that’s the frontend development aspect of it. This often includes the graphic design and illustration of a game. Essentially, the way that a game looks is entirely dependent on these front end developers.

Graphic designers and illustrators will work together to make sure that your favorite slot games aren’t confusing to use and that they are easy for people to navigate. Aside from that, they are in charge of making sure that the game actually looks goo and that the colors and designs are vibrant and enticing for the gamer. 

Mobile Gaming Compatibility

Lastly, there are the mobile aspects of software development. Many casino operators are making a push towards mobile gaming nowadays. So, developers have the challenge of taking their online platforms and converting them into programs that are mobile-friendly for that huge chunk of the market. 

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