If ever there was a competitive but thriving industry, it’s the online slots designing industry. It’s growing financially year on year and has been since its inception in the middle of the 1990s.

There has been a steady stream of content increasing in quality all the time, and if you thought that online slot game development is at its peak in 2021, another ten years could see the sector evolve further still – check out casino promotions.

This is all thanks to the software providers that design and provide the content to the online casinos. As the industry is so lucrative, more and more companies spring up each year, attracted by the money to be made. So what does this mean for the consumers? Happily, it means a wider range of better, more sophisticated content available to us.

What makes a great online slots developer?

To be successful in the industry, it’s important for software providers to produce a wide range of games covering all types of different genres. This doesn’t just mean slot games with different themes. It means all manner of casino games, from bingo and poker, to roulette and craps.

So who are the best online slots developers, and is it just about appealing to the highest number of people possible?


There’s a general thought within the online casino industry, that NetEnt designs and develops the best games in terms of gameplay and graphics. Of course, everyone will have separate opinions, but most leading online casino sites will provide their consumers with a wide choice of NetEnt games.

Considered one of the “big three”, NetEnt has been in the business for well over two decades. Its gaming systems handled more than 22 billion gaming transactions last year, and NetEnt games can be played at more than 175 online casinos worldwide.

What’s more, there are more than 200 individual games to choose from, like the popular classics Gonzo’s Quest and Starburst.


Another of ‘the big three’, Playtech has been active since 1999. However, the company was actually set up right around the time that casinos started transitioning online.

Today, Playtech offers more than 500 casino, poker, and sports games at UK online casinos. It also owns some of the most sought-after licenses in the game including the 1960s Batman series, Superman, and the hit cartoon Family Guy.


Another household name in the industry, Microgaming has created and continues to produce some of the best games on the market today.

They’ve won so many awards and achieved such industry recognition, that they’ve firmly cemented themselves within the “big three” of games developers.

You will probably have heard of the progressive slot game, Mega Moolah. It holds the world record for the largest ever jackpot paid. It seems Microgaming just keeps on giving.

Yggdrasil Gaming

It’s also worth mentioning Yggdrasil Gaming as they’re a slots developer who are dedicated to producing superior content. Having only received their license in 2013, the team has had to play catch-up in order to stay competitive with the “big three”.

However, Yggdrasil picked up the Innovator of the Year Prize at the 2017 International Gaming Awards, and with games like Valley of the Gods, Jungle Books, Double Dragons, Orient Express, and Vikings Go Wild, they’ll no doubt pick up more awards soon.