Online slot providers
The studios that make the online slots in UK casino lobbies: who they are, their signature mechanics and their best-known games.
By the Slot Machines team. Last checked .
Online slot providers: who actually makes the games
Online slot providers are the studios that design, build and supply the games you see in a casino lobby. The casino runs the account, holds your money and handles withdrawals; the provider writes the maths model, the reel strips, the features and the artwork, and hosts the game on its own servers. When you spin a slot, the result is usually generated by the provider’s system and passed to the casino, which is why the same game behaves the same way wherever it is offered, apart from the RTP version the casino chooses.
Studios vary enormously. Some, such as NetEnt and Playtech, date back to the 1990s; others, such as Hacksaw Gaming, launched in 2018. Some are independent, while many now belong to a handful of larger groups. A few began on the land-based side: Barcrest built pub fruit machines long before its games moved online, and those makers have their own manufacturers hub. This hub profiles each studio we cover, with its best-known games, its signature mechanics and how its games reach UK players.
Knowing the studio is a useful shortcut. A provider’s games tend to share a style of maths as well as a look, so if you enjoy one title, others from the same studio are likely to feel similar. Equally, if a studio is known for very high volatility, that tells you something about how a new release is likely to treat a small budget.
How to use the online slot providers pages below
Each card below opens a profile with the same structure: who the studio is and who owns it, the mechanics it is known for, a table of its slots that we cover, and any UK licence details we have confirmed. Start with the studio behind a game you already know, then use its profile to find similar titles. If you are unsure who made a game, the developer’s name is normally shown on the loading screen or in the help screen.
| Studio | Based | Known for | Owned by |
|---|---|---|---|
| NetEnt | Stockholm, Sweden | Starburst, Gonzo’s Quest | Evolution (since December 2020) |
| Pragmatic Play | Gibraltar | Gates of Olympus, Sweet Bonanza | Private investor group |
| Play’n GO | Växjö, Sweden | Book of Dead, Reactoonz | Independent |
| Big Time Gaming | Sydney, Australia | Megaways, Bonanza | Evolution (deal announced April 2021) |
| Blueprint Gaming | Newark, UK | Fishin’ Frenzy, Eye of Horus | Merkur Group |
| Games Global | Douglas, Isle of Man | Mega Moolah, Immortal Romance | Took on Microgaming’s portfolio in 2022 |
| Hacksaw Gaming | Malta | Wanted Dead or a Wild | Listed on Nasdaq Stockholm since June 2025 |
| Reel Kingdom | Distributed by Pragmatic Play | The Big Bass series | Partner studio |
The profiles only state facts we can trace to a published source, such as a studio’s own website, a regulator’s register or a company filing. Where something could not be confirmed, such as a founding date or a current owner after a deal, the profile leaves it out rather than guessing. If you spot a change, such as a studio being sold, the contact page reaches us.
Studios A–Z
Who owns which online slot providers
Consolidation has turned many famous studios into sister companies. That matters less for the games themselves, which usually keep their own style, than for understanding why a group’s studios share jackpot networks, platforms and release schedules.
| Group | Studios | Notes |
|---|---|---|
| Evolution | NetEnt, Red Tiger, Big Time Gaming, Nolimit City | Live casino group; NetEnt joined in December 2020 |
| Playtech | Playtech, Quickspin, Eyecon | Quickspin bought in 2016, Eyecon in 2017 |
| Light & Wonder | Barcrest, Lightning Box | Renamed from Scientific Games in 2022 |
| Novomatic | Greentube | Greentube joined the group in 2010 |
| LeoVegas Group (MGM Resorts) | Push Gaming | Majority stake announced May 2023 |
Aggregators add another layer: platforms that bundle many studios’ games so a casino can connect once and offer hundreds of titles. Our page on slot aggregators explains the arrangement, and who makes online slots covers the wider supply chain.
Ownership can also change what a studio makes. Some studios bought by larger groups keep their own release schedule and style for years, while others gradually move onto the parent’s platform and jackpot network. Each profile notes the current owner as far as we can confirm it, along with the date a deal was announced or completed, so you can see how recent the change is.
Signature mechanics that identify a studio
Many studios are best recognised by a mechanic they created or made famous. Once you know these, a game’s help screen will often tell you who made it before you see the logo.
- Megaways and Megaclusters: Big Time Gaming’s reel modifiers, the first widely licensed to other studios.
- xWays and xNudge: Nolimit City’s expanding-symbol and nudging wilds, usually found in very high-volatility games.
- Avalanche and Free Drops: ELK Studios’ falling-symbol formats, close relatives of NetEnt’s Avalanche reels in Gonzo’s Quest.
- Fisherman collects: Reel Kingdom’s Big Bass games, where a fisherman wild gathers the cash values shown on fish symbols.
- PopWins: Avatar UX’s reels that grow as winning symbols pop, launched in 2020.
- Network jackpots: Playtech’s Age of the Gods, Blueprint’s Jackpot King and Relax Gaming’s Dream Drop, each shared across many games.
A mechanic is not a promise about payouts. Two games with the same mechanic can have different RTPs, volatility and maximum wins, so the help screen remains the place to check the figures for any individual title.
What recent UK rules mean for online slot providers
Games offered in Great Britain are built to the Gambling Commission’s remote technical standards, and studios supply a UK version to meet them. Since 31 October 2021 that version has dropped autoplay, turbo and slam stops, waits at least 2.5 seconds between spins and stays silent when a return does not beat the stake. From 9 April 2025, UK versions also cap stakes at £5 a spin, and at £2 for players aged 18 to 24 from 21 May 2025. Feature buys, where you pay to go straight to the bonus, are not offered on slots at UK-licensed casinos, so UK versions of many games leave that button out.
Enforcement reaches studios as well as casinos. A studio, Stakelogic BV, agreed a £122,835 settlement in June 2026 over games that spun faster than the 2.5-second rule allows, and in July 2026 Evolution Malta Holding agreed to pay £4.75 million after its games became available to British players through unlicensed sites, according to the Commission’s announcement (opens in a new tab). Many studios publish their Commission account numbers; ELK Studios (40844), Quickspin (38516) and Relax Gaming (37462) are examples. You can look any of them up on the Commission’s public register of businesses (opens in a new tab).
Testing is the other safeguard. Suppliers of remote gambling software must use a Commission-approved test house, and the Commission’s approved list (opens in a new tab) named 14 as of 2 March 2026. Our explainer on how slot machines are tested shows what those checks cover.
Choosing slots by provider
A studio’s name is a useful shortcut to a game’s character, but check each title rather than assuming. Use these steps.
- Pick a slot you already enjoy and note its provider from the loading or help screen.
- Open that provider’s profile and look at its other games’ volatility and features.
- Compare the RTP in each game’s help screen at your casino, because providers often supply several versions and the casino chooses which to run.
- Read the maximum win and how it is reached, especially on high-volatility studios.
- Try a free demo first, which opens only after the site has checked your age.
Our guide to RTP variants explains why the same game can show different returns at different casinos, and Pragmatic Play’s own site (opens in a new tab) lists its catalogue if you want to see a studio’s full range.
Frequently asked questions
What is an online slot provider?
An online slot provider is the company that develops the game: its maths model, reel strips, features, graphics and sound. The provider usually hosts the game on its own servers and supplies it to many casinos at once, while each casino handles accounts, payments and customer support. To supply games to Great Britain, a provider needs a Gambling Commission licence and its software must be checked by an approved test house. Our page on what a slot provider is explains the relationship in more detail.
Does the provider or the casino decide whether I win?
The game’s random number generator decides, and that generator is part of the provider’s software rather than something the casino controls spin by spin. Outcomes must not be adjusted to reach a target return on online games in Great Britain. What the casino does choose is which RTP version of a game to run, when the provider offers more than one. That choice changes the long-run return, not individual spins. The current figure should be shown in the game’s help screen at your casino.
Which online slot providers are the biggest?
There is no official ranking, and size can mean revenue, catalogue or reach. Among the studios we cover, Games Global lists over 1,300 titles from more than 40 in-house and partner studios, and Pragmatic Play and Playtech supply slots, live casino and other products across many regulated markets. Evolution owns several well-known slot studios, including NetEnt, Red Tiger, Big Time Gaming and Nolimit City. The best measure for a player is not size but whether a studio’s games suit your budget and taste.
Are slots from different providers fairer than others?
All slots offered legally in Great Britain must meet the same Gambling Commission standards for random outcomes and must be tested by an approved test house, whoever made them. In that sense no licensed studio is fairer than another. What does differ is the return and the volatility each game is designed to have, and those figures should be stated in the help screen. A game with a lower RTP is not unfair, but it costs more to play on average. Compare the stated figures rather than the brand.
Why can’t I buy the bonus on slots in the UK?
Slots at UK-licensed casinos are supplied without a feature buy option, so you cannot pay a lump sum to go straight into the bonus round. Many studios offer that button in other markets, which is why it appears in videos or reviews from abroad. In Great Britain, the bonus has to be reached through normal play. No official Commission rule with a start date has been confirmed for this, so it is best understood as how games are supplied here. Our bonus buy in the UK page has the background.
Do providers make land-based slot machines too?
Some do. Blueprint Gaming, part of the Merkur Group, has supplied reel-based machines for the UK market as well as online games, and Barcrest built pub fruit machines for decades before Rainbow Riches became an online series. Novomatic and IGT are major land-based manufacturers whose games also appear online through their digital arms. Many newer studios, such as Hacksaw Gaming or Push Gaming, work online only. Our slot machine manufacturers hub covers the companies best known for physical machines.
What is Megaways and which provider made it?
Megaways is a reel mechanic created by Big Time Gaming, in which the number of symbols on each reel changes every spin, so the number of ways to win changes too. Big Time Gaming has licensed it to other studios: Blueprint Gaming was its first licensee in 2018, and many providers now release Megaways versions of their own games. The ways count varies by game, so check the help screen. Our page on Megaways slot machines explains how the reel modifier works.
How do I check if a slot provider is licensed in the UK?
Search the Gambling Commission’s public register by company name or account number. Many studios list their account number on their own website or in game footers; ELK Studios, for example, gives 40844 and Quickspin 38516. Each entry shows the licence status and the activities it permits. If you play at a UK-licensed casino, every game it offers should come from a licensed supplier, so checking the casino’s own licence is the first step. Our page on the Gambling Commission and slots explains the register.
Do new slot providers appear often?
Yes. New studios launch regularly, often founded by people who worked at larger providers, and many begin by distributing through an aggregator or a bigger studio’s network rather than building their own casino connections. Some, such as Reel Kingdom with Pragmatic Play, keep that arrangement long term. New studios still need the same Commission licensing and testing before their games reach British players. Our guide to how new slots are released follows the process from certification to the casino lobby.