Microgaming Slots & Slot Sites

The biggest ever slots win and more slots (500+ and available to play at over a thousand sites) than you can shake a leprechaun at. Microgaming, developers of Mega Moolah – one of the world’s most famous and much-loved slots, is an absolute titan when it comes to online slots.  

Not content with essentially starting the whole online slots industry, the fledgling company released an online slot game called Cash Splash in 1998, which played host to the first ever progressive jackpot.

Hundreds of games followed. As well as the ever-expanding Mega Moolah series, classics such as Immortal Romance – originally released in 2011 and revamped several times since – have truly captured the slot-playing public’s imagination. A ‘timeless 5-reel, 243 payline horror themed slot’ according to our review team. This story-led slot has a max payout of 12,150x and a not-bad-at-all RTP of 96.86.  

Gold Mine Stacks, this Wild West-era mining slot sits comfortably in equal first place in the Slot Gods’ rankings of Microgaming games on a nice 4.13/5 (our reviewers are tough!). What’s more, a 50,000x stake max payout is more than an eyebrow-raiser for slots fans. And the other equal first in our rankings… Immortal Romance Mega Moolah. Well, when you’re onto a couple of winners, why not?

And, if you’re like me, you’re often won over simply by the name of a game – how about 8 Golden Skulls of Holly Roger Megaways? This pirate-themed slot has 117,649 paylines, a nicely above par RTP of 96.86 and a 6,000x stake payout.

Then there’s the much-loved Thunderstruck series.

Slot Gods has reviewed nearly 40 of the best of Microgaming’s extensive, genre-rich catalogue. Retro – tick, Wild West – tick, Action – tick, Adventure – tick, Mythical – tick… and the list goes on. Take a look for yourself.

Wow, now that is some payout!

On 6 October 2015 a world record £13,209,300 (€17,879,645 / $20,062,600) was paid out to Jon Heywood in the UK who had been playing Microgaming's Mega Moolah. What’s more Mega Moolah has form – in May 2009, Mega Moolah paid out $6,374,434 which was the largest online casino pay-out at that time. And as recently as June 2025 one lucky UK player pocketed a tidy £11,498,211 with a £1.50 spin. Life-changing!

Awards

Microgaming has been recognised many times within the industry, compiling a trophy cabinet-full of awards along the way. These include:

• iGaming Software Supplier of the Year – International Gaming Awards, 2018
• Mobile Product of the Year – International Gaming Awards, 2017 
• Mobile Gaming Software – EGR B2B Awards, 2017
• Biggest Online Games Portfolio – BEGExpo, 2016
• Digital Product of the Year – Global Gaming Awards, 2014, 2015, 2016
• Digital Gaming Innovation – Global Gaming Awards, 2015

WowPots

In 2020, the studio decided to create a brand-new progressive jackpot with networked games under the name of WowPot. There are 4 different pots available with the biggest seeded at €2 million.

Wheel of Wishes, Queen of Alexandria and Sisters of Oz WowPot are just a few online slots to contain this massive jackpot and one lucky player won €3.8 million in September 2021 on Ancient Fortunes: Poseidon WowPot Megaways.

Link & Win

In addition to WowPots, Microgaming created the Link & Win mechanic – one of the most popular respins mechanics in the world. Triggered through landing between 6 to 14 special symbols, a respin feature is triggered with 3 respins.

The respins reset each time a symbol successfully lands on the symbols and there are often fixed jackpots attached to these. Have a look at Thunderstruck Wild Lightning and WWE Legends: Link & Win if you want to try out this amazing mechanic.

Microgaming in numbers (and firsts)

• Mega Moolah – the ‘Millionnaire Maker’ with more than 30 multimillion jackpots
• 32 years and counting since Microgaming developed the first online casino software 
• 500+ active games including regionally tailored formats – nearly 40 of them assessed and reviewed on Slot Gods
• Microgaming games found on 1,000 slot sites
• Available in 40+ languages and 150+ currencies
• First online slot developer to create (with Square Enix) a branded slot – Tomb Raider
• Released the first online slot to feature 100 paylines – most at the time had no more than 25 paylines
• Created the popular Link& Win mechanic

A major player in shaping iGaming regulation

Microgaming’s growing influence saw them become an integral partner in the formation of not one, but two industry regulatory bodies. These are the Interactive Gaming Council (IGC), and e-Commerce and Online Gaming Regulation and Assurance (eCOGRA). 

Both organisations are hugely important within the iGaming sphere today and work together to ensure members follow best practice.

Business change

Microgaming sold its online games portfolio and distribution in 2022 to Games Global Limited. Since then Microgaming has focused on licensing services, delivering platform systems and compliance solutions across the iGaming industry.

And in the final analysis…

Microgaming has been a true giant in the online slots world. Innovative, inventive and with a fistful of industry firsts, the Isle of Man-based company’s contribution has been immense as dozens, if not hundreds, of players who have taken home mega amounts of moolah will attest to.