Online Slots by Software Type


In this section we list all of the online casino software providers that are behind the slots we review. If you are looking for a particular game and you know the company that makes the game then see below for both full lists of games from each software company as well as lists of reputable online casinos that use that software provider.


Microgaming has released more online slots than any other software provider. The game range is impressive with a big selection of all the slots categories. The Microgaming progressive network has paid out over $280,000,000.


Established in 1995, Cryptologic is behind big name online slots such as Millionaires Club and the Marvel Jackpot slots. They are a publicly listed company on the NASDAQ and power several top rated online casinos.


Playtech have greatly improved their slot range over the last few years where today they now have one of the best variety of slots. Top rated games include Gladiator, Rocky, King Kong and the new Marvel Jackpot slots.


Realtime Gaming, also known as RTG have released a good range of slot over the years. The most popular RTG slots are part of their Real Series video slots range. They also have some big progressives like Jackpot Pinatas.

NuWorks Gaming

NuWorks Gaming was established in 2011 and is essentially a new version of RTG software. Currently the company has released a small range of video slots and several progressive games including Monster Millions.

Wagerworks IGT

Wagerworks is the online division of IGT - one of the worlds biggest slot machine manufacturers. This means they have a huge library of games to choose from including hits like Wheel of Fortune, Monopoly and Cleopatra.

Wagerworks IGT

WMS Gaming are one of the USA's biggest slot machine providers and have now started to release their games online. Top titles include The Wizard of Oz, Star Trek, Reel Em In : Big Bass Bucks and of course Super Jackpot Party.

Slotland Entertainment

Slotland Entertainment is a relatively small software provider that power two online casinos. All of the slots are unique and only found at Win a Day and Slotland. Every slot is connected to a linked jackpot network.


Rival Gaming was established in 2006 and powers several online casinos. The slot range from Rival is quite small although they have a good selection of the various game types including several progressives.

Boss Media

Founded in 1996, Boss Media is an online casino software provider based in Sweden. They have a small range of slots including several big progressive games. New games are added every few months.

Vegas Technology

Update : As of May 2011 all Vegas Technology casinos have closed. We will update this if they re-open. Originally known as Odds On Gaming, Vegas Technology is the software behind a small selection of online casinos.

Online Casino Software Providers

There are quite a few different software providers for online casinos. The biggest publicly listed company is Playtech while the biggest private company is Microgaming. Each one of the software companies listed above have their games independently audited to ensure fairness and report payout percentages.

In terms of age, Microgaming and Cryptologic have been around the longest with both being established in 1995. Slotland Entertainment and Realtime Gaming were established in 1998 followed by Playtech who launched a year later in 1999.

Looking at game range, Microgaming leads the pack with over 500 game titles including over 350 different slots. Other software companies like Playtech and Realtime Gaming are catching up with frequent game releases although if you are looking for one casino with the most games then it's hard to go past Microgaming.

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