Microgaming Casinos 2026 — Mega Moolah, Slots & UK Sites
Last reviewed July 2026
Microgaming is a foundational name in online gambling — the company widely credited with launching the first real online casino software back in 1994. This page explains what Microgaming is today, what happened to its famous game catalogue, and where UK players can find that content now.
Who Microgaming is
Founded in 1994 on the Isle of Man, Microgaming spent nearly three decades as one of the industry’s biggest content and platform suppliers. In a significant restructuring, it sold its games portfolio and the Quickfire distribution business to Games Global Limited (also Isle of Man), a transaction completed in May 2022 that handed over a customer network of more than 900 gaming brands. Microgaming itself continues as an independent platform and software company and still licenses its sportsbook technology, notably to Betway. In practice, the slots most players call “Microgaming games” are now owned and operated by Games Global.
Flagship Microgaming games
The catalogue is anchored by Mega Moolah, the progressive-jackpot network responsible for some of the largest online slot payouts on record, now run by Games Global. Alongside it sit long-running favourites such as Immortal Romance, Thunderstruck II, 9 Masks of Fire and Book of Oz. Games Global has continued to extend the franchises, releasing an Immortal Romance II sequel in 2024.
What Microgaming games are known for
The hallmark of the catalogue is breadth — hundreds of titles spanning classic three-reel machines, feature-rich video slots and the headline progressive networks. Return-to-player figures generally sit in the mid-90s, though jackpot slots such as Mega Moolah carry a lower base RTP because part of each stake funds the shared prize. The Mega Moolah and WowPot networks paid out more than EUR 155m in 2023 alone, and Games Global added the King Millions network the same year.
Where to play Microgaming games in the UK
Games Global content (the former Microgaming catalogue) is stocked by many UKGC-licensed casinos. Three sensible options are Casumo, Mr Green and PlayZee. Full details are on our Casumo, Mr Green and PlayZee review pages, and you can weigh cash-out times against our best payout casinos guide.
Visit Casumo Visit Mr Green Visit PlayZee
Safer gambling
Any UK site offering these slots must hold a UK Gambling Commission licence and provide deposit limits, reality checks and GAMSTOP self-exclusion. Accepted deposit methods are debit card, e-wallet, bank transfer and Paysafecard; credit cards have been banned for gambling in Britain since April 2020, and from 2026 bonus wagering is capped at 10x.
Top UK casinos for these games
50% deposit match up to £100 on first deposit
Recro Limited (Malta reg. C77858), UKGC account 61549
Deposit £10, get 200 free spins
Playtech group — Virtue Fusion (Alderney) Limited / Blue Rock Managed Services Limited (UKGC account 67740). NOT Evoke/William Hill any more.
100% bonus up to £25 + 100 Zee Spins
White Hat Gaming Limited (UKGC account 52894, white label)
18+ only. Gambling involves risk; only stake what you can afford to lose. Every operator listed here holds a UK Gambling Commission licence.
Free, confidential help: BeGambleAware.org (0808 8020 133), GamCare, and GAMSTOP self-exclusion.
FAQ
Is Microgaming still going?
Yes, but in a changed form. Microgaming remains an independent Isle of Man company focused on platform systems and services. Its slot catalogue, exclusive studios and progressive-jackpot network were sold to Games Global, a deal completed in May 2022.
Who owns the Mega Moolah jackpot now?
The Mega Moolah and WowPot progressive networks transferred to Games Global as part of the 2022 sale. Games Global reports the two networks paid out more than EUR 155m in 2023 and launched a further network, King Millions, that year.
Can I still play the old Microgaming slots in the UK?
Yes. The classic catalogue — now distributed by Games Global — remains live at UKGC-licensed casinos, including franchise titles such as Immortal Romance and Thunderstruck II and the Mega Moolah jackpots.
Why is Microgaming credited as a pioneer?
Microgaming is widely credited with launching the first true online casino software in 1994, which is why so much early online-gambling technology traces back to the company.
What RTP do Microgaming/Games Global slots use?
Return-to-player varies by title and by the build an operator selects, but most sit in the mid-90s. Progressive-jackpot slots such as Mega Moolah run a lower base RTP because a slice of every stake feeds the shared prize pool.