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Behind the Scenes: How Online Slots Are Created
July 12, 2023

Behind the Scenes: How Online Slots Are Created

Whether you are an expert or a beginner gambler, everyone agrees that online slots are one of the most popular gambling games. People like playing slots because they enjoy the same feeling without going anywhere. But do you know what happens behind the scenes of online slot games? In this blog post, we will discover how to make an online slot machine from scratch. This way, we will understand the technology and process that made this game the first choice in decades.

Read more about slot machines and other games at the casino Vave blog.

How Online Slots Work

Who among gamblers does not like online slot games? Most people visit casino sites only to try out at least one slot. Whether it is an online or physical machine, its simplicity and huge prizes make it popular. Additionally, the goal is to match a specific combination of symbols, called a payline. Once you get the same image in one line, you win. Each slot machine has its symbols, theme and number of reels. For example, physical machines usually have three to four reels, while online ones have more. And, of course, each added reel increases the possibilities of combinations from thousands to millions. Moreover, when playing slot machines, it’s essential to knowhow to make online slot games profitable by understanding their features before you start playing. Some pokies allow you to choose the number of paylines to bet on and the amount you want to wager per play, while others do not. Therefore, don’t insert your money until you examine the cost per play, the odds, the available paylines, and other relevant information.

Development Stages

The first slot machine was created in 1891. It was similar to a poker game and cost only five cents. Then, four years later, a more improved machine with three reels and five symbols was introduced. Although it became illegal in some states, it survived and eventually gained popularity online. Nowadays, slot games have become highly advanced. So, if you’re curious about the development stages of online slot machines, don’t worry! We can break down the process into three simple steps: Idea, Theme, and Programming. Also, we’ll explain each part in an easy-to-understand way. So let’s get started!


Every online slot machine software needs a skilful team to be created. These IT developers research and conceive ideas from scratch. They often get inspiration from popular themes like sports, fruit, celebrities, ancient mythologies and more. Let’s take Vave as an example. The casino is permanently following the market needs and trends. That is why the platform has built partnerships with the most famous online slot software providers, where developers brainstorm slot ideas based on distinctive features and big bonuses. e.g. Gates of Olympus (Greek mythology theme), Buffalo King (American Wild West theme), and Sweet Bonanza (Fruit theme). All mentioned slot games are at Vave, a licensed crypto casino with over 100 free spins if you use the official promocode VAVEGIFT while registering.


As explained above, to find slot game themes, developers research what’s popular in the market and what players like. They also gather feedback and data, even from competitors, to help them decide on a suitable theme to create or update. They look at things like how it would look, if it’s different from other games, if it has a connection to history, and if they can partner with famous brands. It is essential tocreate a slot machine online with a theme that interests players, gives them a great time playing, and keeps them returning for more. Thus, software providers want their games to be successful in the long run. In this way, leading casinos such as Vave, can maintain their partnership with them.


The slot games programming process involves a lot of work. Whether it’s about developing a prototype, basic version or final one, the programming part concretises the idea. Several teams work together for one purpose, which is to release a final version that includes all details. The most important part is to choose the coding languages that will be used in this process. The latter varies from one game software provider to another. Let’s assume you are one of these companies. The coding language you need for making a game depends on your chosen platform. For example, if you want to create a game for the web, you can use JavaScript. For Android mobile apps, you can use Kotlin; for iOS ones, you can use Swift. You have more options for desktop games like Python, Java, and C++. How to create online slot games depends mainly on how developers master these coding languages.

What Are RNG and RTP

Two important things in online slots are random number generators (RNG) and Percentage Return To Players (RTP). The RNG is a unique math formula or algorithm that creates random results for each slot spin. This ensures that every spin is legit and has no fixed outcomes. This is why online casinos have to use RNGs to make sure the games are fair and checked regularly by independent testers to ensure they’re real. On the other hand, the Percentage Return To Players (RTP) is the part of the money players spend on online slot games that are then given back to them as a reward.


As you may notice, the process of creating slot games can be both complex and easy. Like other games, slots mix limitless creativity and a good understanding of players’ psychology. Their developers also focus on RNG and RTP factors to guarantee a fair and memorable online gaming experience. So if you are looking for a legit slot game to test, you are in the right place. At Vave Casino, you can find hundreds of games with big bonuses and rewards to maximize your enjoyment.


  • How long does it take to develop a slot game?

    The time can range from a few months to a year. It depends on the idea of the game, how complex the theme is and the language used in its coding.

  • How much does It cost to develop a slot game?

    The average cost of developing a slot game can be between $10K and $200K. It depends on whether the company will outsource the project to a software provider.

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