WIN Studios Slots: The Entain In-House Studio Behind BetMGM and Borgata Exclusives
WIN Studios slots occupy an unusual corner of the American online casino market: you cannot find them everywhere. Unlike catalogs that appear at dozens of sites, WIN Studios online slots are effectively exclusive to a single family of regulated operators, because the studio is owned by Entain, the same company that co-owns BetMGM. That ownership tie is the single most important fact about WIN Studios games, and it shapes where you can play them, how their progressive jackpots work, and why certain titles never appear anywhere else. This guide, part of our directory of the USA online slots, walks through who WIN Studios is, the titles that matter, the return-to-player and volatility ranges you can expect, the safety and licensing picture, and the two regulated casinos that carry these slots for real money. Where studio facts are thin or unconfirmed, we say so plainly rather than guess.
Who is WIN Studios?
WIN Studios is the in-house game development arm of Entain, the London-listed global gambling group that co-owns BetMGM alongside MGM Resorts International. In simple terms, WIN Studios is not an independent supplier selling to the whole market. It is a studio that builds content primarily for Entain-controlled and BetMGM-branded casinos, which is why its slots behave more like store-brand products than like the widely licensed catalogs of Pragmatic Play or IGT.
The studio’s roots run deep. The development lineage traces back to PartyGaming, the operator that launched in the late 1990s and grew into one of the earliest online gambling powers. Through a series of mergers, PartyGaming became Bwin.Party, which was then acquired by GVC Holdings, which finally rebranded as Entain in 2020. WIN Studios sits inside that history as the modern name for Entain’s proprietary casino content operation. Some older WIN Studios and Bwin.Party titles still carry design fingerprints from that earlier era, which is part of why the catalog spans everything from stripped-down classic slots to modern feature-heavy video slots.
Entain runs game development across several in-house locations, and a significant share of the US-facing output comes from a studio centre in Hyderabad, India, that was built up specifically to feed content to BetMGM Casino in North America. Entain has publicly stated plans to expand headcount across its in-house studios and to accelerate exclusive content, and reporting has pointed to a program of roughly 30 new products aimed at BetMGM customers in a single year, spanning slots and branded table games such as BetMGM Blackjack Pro and BetMGM Roulette Pro. Beyond that, precise details about WIN Studios as a standalone corporate entity, such as an exact founding date under the WIN Studios name, published staff counts by title, or a public game-count total, are not consistently disclosed. We treat those numbers as unconfirmed.
What is clear is the strategy. Entain wants exclusive content it owns outright, because owning the studio means owning the economics, the jackpot networks, and the ability to differentiate BetMGM and Borgata from every rival that licenses the same third-party games. WIN Studios is the vehicle for that strategy. You can compare this model to the more open licensing approach used by suppliers on our software hub, such as NetEnt, Pragmatic Play, Light and Wonder and IGT, whose slots you will find across many competing operators.
Why you only see WIN Studios slots at BetMGM and Borgata
Because Entain owns WIN Studios and co-owns BetMGM, the studio’s US slots are, in practice, exclusive to the Entain and MGM ecosystem. In the American regulated market that means two consumer-facing brands above all: BetMGM Casino and Borgata Casino. Borgata Online and BetMGM share almost the same underlying game library in the states where both operate, so a WIN Studios title that debuts on BetMGM typically shows up on Borgata as well.
This exclusivity is the point, not an accident of distribution. A third-party studio wants its games on as many sites as possible to maximize licensing revenue; an in-house studio wants the opposite, to make its best content a reason to pick one operator over another. When BetMGM stamps a slot as a “BetMGM exclusive,” WIN Studios is usually why it can, and public commentary from BetMGM has noted that several of its top-performing slots originate from Win Studios.
The practical takeaways are simple. To play WIN Studios online slots for real money in the United States you need a BetMGM or Borgata account in a licensed state; do not expect these exact games at unrelated brands, and be skeptical of any site outside that family claiming to carry them. The exclusivity extends to the in-house progressive networks the games feed.
Watch for imposters. Any site outside the BetMGM and Borgata family claiming to carry these exact titles should be treated with suspicion. Stick to licensed US casinos to play WIN Studios slots for real money.
How many slots does WIN Studios have?
WIN Studios does not publish a definitive live catalog count, so any single number should be treated as an estimate. Based on the range of titles visible across BetMGM and Borgata lobbies and Entain’s stated content programs, the practical picture is a focused, growing library rather than a sprawling one. This is not a studio pushing out hundreds of near-identical releases every year. It is a smaller, curated slate of slots, branded table games and occasional social or free-to-play formats, refreshed with new US-targeted titles on a steady cadence.
That focus shapes expectations. You will see fewer WIN Studios slots than a high-volume supplier offers, but a meaningful share are built for the US market and wired into BetMGM’s exclusive jackpots. Integration with the operator, not sheer quantity, is the calling card.
Most popular and signature WIN Studios titles
The titles below are among the WIN Studios and Entain in-house slots most visible in US BetMGM and Borgata lobbies. Specifications such as RTP and maximum win can vary by jurisdiction and can be changed by the operator over time, so always confirm the figures on the in-game information screen before you play. Where a stat is not consistently published, we flag it.
Here is an at-a-glance comparison of the signature titles, drawn from published listings. Read every figure as approximate and jurisdiction-dependent, and defer to the number shown in the game itself.
| Title | Theme | Reels and lines | RTP (approx) | Volatility | Jackpot type |
|---|---|---|---|---|---|
| Melon Madness Megaways | Fruit | 6 reels, Megaways ways | 91.40 percent | High | Multi-tier progressive |
| Independence Pays | Patriotic | 5 reels, 10 lines | 95.50 percent | Low | The Big One network |
| Cool Jewels | Gems | 6 reels, 50 lines | 96.10 percent | Medium | Fixed |
| The Win Genie | Arabian genie | 5 reels, 15 lines | 96.10 percent | Medium | Fixed |
| Eye of Hathor | Ancient Egypt | 5 reels, 10 lines | 96.15 percent | Medium | Fixed |
| Dazzling Sun | Fruit and sun | 5 reels, 5 lines | 96.59 percent | Medium | None |
| Galacticos | Space | 5 reels, 10 lines | 96.78 percent | Medium | None |
| Loot’enKhamun and the Dead Sea Scrolls | Ancient Egypt | 5 reels | Varies by state | Medium | The Big One access |
Melon Madness Megaways
Often cited as the studio’s flagship, Melon Madness Megaways pairs a bright fruit theme with the Megaways engine, which reshuffles the number of symbols on each reel every spin to create a huge and shifting number of ways to win. It layers in multiple bonus features and a multi-tier progressive jackpot, and it is the WIN Studios title most associated with a very large advertised top prize. Its published RTP has been listed around 91.40 percent, which is notably lower than most of the catalog, and its volatility is high, so treat it as a high-risk, high-ceiling game rather than a steady grinder.
Independence Pays
A patriotic, red-white-and-blue slot built as a BetMGM exclusive, Independence Pays is best known as a gateway into The Big One in-house progressive jackpot network. It runs a modest five-reel, ten-payline structure with a listed RTP around 95.50 percent and lower volatility, which suits players who want frequent smaller action while still holding a ticket into a large linked jackpot. Firework animations dress up wins.
Cool Jewels
A gem-collection slot on a six-reel grid with 50 paylines, Cool Jewels uses cascading reels, exploding wilds and a free spins round of up to 15 games. Its listed RTP has appeared around 96.10 percent with medium volatility, placing it among the more balanced titles in the range. It is a fixed-jackpot game rather than a progressive.
Dazzling Sun
Dazzling Sun is a quirky five-reel, five-payline game that swaps traditional bonus rounds for two mini-games and gives players a measure of control over whether to continue or bank a win. Its listed RTP has appeared around 96.59 percent with medium volatility. It is a lower-ceiling title, so it rewards session play more than jackpot chasing.
Galacticos
A space-themed five-reel slot with ten paylines, Galacticos leans on a blue-orb wild that triggers respins rather than a conventional free spins bonus. Its listed RTP has appeared around 96.78 percent, among the higher figures in the catalog, with medium volatility and a top win in the range of 1,250 times the stake.
The Win Genie
Built around an Aladdin-style genie theme, The Win Genie is a five-reel game with 15 fixed paylines and a listed RTP around 96.1 percent. It is a good example of the studio’s approach of keeping the visuals clean while putting the emphasis on straightforward feature play.
Eye of Hathor
An Ancient Egyptian five-reel, ten-payline slot with scatter and wild symbols, Eye of Hathor carries a listed RTP around 96.15 percent and medium volatility. Its origins reach back to the Bwin.Party era of the studio’s lineage, which is a reminder that some WIN Studios inventory predates the current branding.
Loot’enKhamun and the Dead Sea Scrolls
Another Egyptian adventure, this five-reel slot combines wilds, scatters, multipliers, a bonus game and free spins, and it can unlock access to The Big One progressive network. Its RTP is one that varies by jurisdiction, so it is especially important to check the in-game figure at your specific state casino.
Book of Myths and Book of Horus
The studio also fields entries in the popular “book” sub-genre, expanding-symbol slots in the mold of the classic Egyptian book formula. These sit in the catalog as recognizable, familiar-feeling titles for players who enjoy that mechanic. Detailed, consistently published US specifications for every book title are limited, so verify RTP and features in the lobby.
Beyond the headliners
The studio’s wider output stretches past these marquee US releases into a deeper bench of slots and classic-style games seen across Entain-owned brands internationally. Titles such as Cry Wolf, Gold Fish Fortunes, Scorching Fruits 40, Zeus God of Thunder, a 30-line game built around bonus prize wheels, and the operator-branded bwin Millions turn up in that broader library. Not all of them appear in every US state lobby, and some are geared to markets outside America, so availability at BetMGM or Borgata can vary; check the current game list in your state rather than assuming a title has crossed over.
A note on attribution: because WIN Studios content sits inside a large operator that also licenses many third-party games, some online lists incorrectly group non-Entain slots, such as certain Aristocrat or Barcrest classics, under the WIN Studios name. We have deliberately left those out. The titles above reflect games tied to Entain’s in-house development rather than every slot that happens to appear near them in a BetMGM lobby.
Progressive and jackpot mechanics: The Big One network
The most distinctive part of the WIN Studios story is not any single slot; it is the in-house progressive jackpot infrastructure that several of its games feed. The headline network is branded The Big One, described by BetMGM as a large state-by-state exclusive in-house progressive jackpot system. Every qualifying wager on a linked game contributes a slice to a shared, growing prize, and because the network is in-house, it exists only inside the BetMGM and Borgata ecosystem.
The mechanics work like most progressive networks. A small portion of each bet on a participating game seeds the jackpot, which climbs until a lucky spin triggers it. WIN Studios titles such as Independence Pays and Loot’enKhamun and the Dead Sea Scrolls are among the games that can grant access to The Big One. Reporting has noted the network reaching multi-million-dollar levels, with the top prize pushing past the $4 million mark in 2024. Separately, Melon Madness Megaways carries its own multi-tier progressive with a very large advertised maximum, and BetMGM has run related in-house jackpot slots such as Mirage Mega Magma tied to the same broader network. Exact live jackpot values change constantly and differ by state, so use the figure shown in the game, not any number quoted here, as your reference.
Because these networks are exclusive, a WIN Studios progressive is a genuine reason some players choose BetMGM or Borgata over rivals: you simply cannot chase these specific pots anywhere else. If jackpots are your focus, you can compare linked-network slots across suppliers on our most popular slots and new releases pages.
Typical RTP range
Across the visible WIN Studios catalog, listed return-to-player percentages cluster in a familiar mid-90s band, with the important exception of high-volatility jackpot titles that run lower to fund their large top prizes. As a rough guide based on published figures:
- Higher end: Galacticos around 96.78 percent, Dazzling Sun around 96.59 percent, and Eye of Hathor around 96.15 percent sit toward the top of the range.
- Middle: Cool Jewels around 96.10 percent and The Win Genie around 96.1 percent are solidly mid-table.
- Lower end: Independence Pays around 95.50 percent and, notably, Melon Madness Megaways around 91.40 percent sit below the pack, with the Megaways title trading RTP for jackpot potential.
If the term is new to you, think of RTP as the share of all money wagered on a game that it is built to hand back to players over an enormous number of spins. A 96 percent figure means the design returns 96 cents on the dollar across the very long run, with the remaining slice held by the house; it says nothing about what any single session will do. Two cautions apply. First, operators can load the same title at more than one RTP setting, and figures can differ by state, so the number printed on your screen is the one that governs your play. Second, a lower percentage on a progressive title is part of the price of a ticket into its linked jackpot. Our plain-English breakdown at RTP explained goes deeper on the numbers.
Volatility range, with examples
WIN Studios spreads its games across the risk spectrum, which is part of how a focused catalog still serves different player types. The word to watch for is volatility, the rhythm of a slot’s payouts: a low-volatility game tends to trickle out modest wins on a regular basis, while a high-volatility one keeps you waiting through cold stretches in exchange for the chance at a much heavier payoff. Neither is better; they simply suit different bankrolls and moods.
- Lower volatility: Independence Pays leans toward steadier, more frequent action, which is why it pairs well with its jackpot ticket, letting you stay in the game longer.
- Medium volatility: Cool Jewels, Dazzling Sun, Galacticos and Eye of Hathor sit in the balanced middle, a sensible default for most sessions.
- Higher volatility: Melon Madness Megaways is the clearest high-variance example, with a shifting Megaways engine and a large jackpot ceiling that comes with longer dry spells.
If you are new to matching a game to your bankroll and temperament, our volatility guide explains how to read these labels and choose accordingly.
Special features and mechanics
WIN Studios has a recognizable design philosophy: keep the visuals relatively clean and put the weight on features and mechanics. That leads to a toolkit you will see recur across the catalog:
- Cascading or tumbling reels, where winning symbols disappear and new ones drop in for chain wins, as in Cool Jewels.
- Exploding and expanding wilds that clear space or fill positions to build bigger combinations.
- Respin triggers, such as the blue-orb wild in Galacticos, used in place of a full free spins bonus.
- The Megaways engine in Melon Madness Megaways, which changes the number of symbols per reel each spin to create hundreds of thousands of potential ways to win.
- Player-choice mini-games, as in Dazzling Sun, which let you decide whether to press on or bank a win rather than sit through a fixed bonus.
- Multipliers, scatter-triggered free spins and expanding-symbol book mechanics across the Egyptian-themed and book titles.
- In-house progressive jackpot hooks that link qualifying games into The Big One network.
All of these run on a certified random number generator, the software that keeps every spin independent and unpredictable. If you want to understand why that matters for fairness, see our RNG explainer.
Safety, security and audits
WIN Studios slots reach US players only through fully regulated operators, which is the most important safety fact of all. BetMGM and Borgata hold licenses from state gaming regulators and can offer real-money online casino games only in states that have legalized and licensed online casino play. As of this review, that regulated online casino footprint centers on New Jersey, Pennsylvania, Michigan and West Virginia, with additional states operating regulated markets. You can check the current picture for your area on our New Jersey, Pennsylvania and Michigan state pages.
In these markets, fairness is not taken on trust. State regulators such as the New Jersey Division of Gaming Enforcement require that online slots and the random number generators behind them be tested and certified before going live, and independent labs do that work. Well-known names in the US space include GLI (Gaming Laboratories International) and iTech Labs, which verify that payouts match the stated RTP and that outcomes are genuinely random. Distributing through licensed operators, WIN Studios titles face the same certification regime as any other slot on those platforms.
Entain, as the parent company, is itself a publicly listed operator subject to regulatory oversight across multiple jurisdictions; you can review corporate information at the parent group’s official site, entaingroup.com. For state-level regulatory detail, the New Jersey regulator publishes guidance at nj.gov/oag/ge. The takeaway for players: as long as you are on a licensed BetMGM or Borgata app in a legal state, WIN Studios slots operate inside a tested, audited and government-regulated framework.
Where to play WIN Studios slots: regulated US casinos
Because of the exclusivity model, the list of regulated homes for WIN Studios online slots is short and specific. Both casinos below are part of the same Entain and MGM ecosystem, which is exactly why they carry these games.
BetMGM Casino
BetMGM is the flagship home for WIN Studios slots and the operator these games were largely built for. Several of BetMGM’s best-performing slots are WIN Studios titles, and the operator markets a number of them as BetMGM exclusives, including jackpot games linked to The Big One network. If you want the widest selection of WIN Studios content, the newest US-targeted releases, and direct access to the in-house progressives, BetMGM is the first stop. Read our slot-focused breakdown at BetMGM Casino.
Borgata Casino
Borgata Online shares almost the same underlying game library as BetMGM in the states where both run, which means the WIN Studios catalog carries over almost intact, including the exclusive progressives. Longtime Atlantic City players often prefer the Borgata brand, and the practical experience for WIN Studios slots is very close to BetMGM, down to the same in-house jackpot networks. See our slot-focused notes at Borgata Casino.
Ready to spin the exclusives? WIN Studios slots live only at licensed operators in your state. Compare your options at Licensed US Casinos
Mobile play
The phone, not the desktop, is where most people now spin these games, and WIN Studios titles are engineered with that in mind. They reach US players inside the BetMGM and Borgata apps, two of the more refined pieces of software in the regulated market, and they behave the same on a recent iPhone or Android handset as they do in a mobile browser. The reels, the tumbling cascades and even the Megaways grid redraw cleanly on a small display, and the live jackpot counters tick up on your screen exactly as they would on a laptop. Portrait-mode play, quick spins and touch controls all carry over. You can line up other handset-ready titles on our mobile slots page.
Real-money and free play
A WIN Studios slot can be launched in one of two ways. Staking cash calls for a funded BetMGM or Borgata account in a state that permits online casino play, and it is the only route to a genuine cash win or a live payout from The Big One network. Our real-money slots hub lays out how deposits, wagering and cashouts work at licensed US operators.
Many of the same titles can also be sampled in a no-stakes demo that runs on play credits, a relaxed way to feel out a game’s features and payout rhythm before any of your own money is at risk. Whether that demo appears depends on the operator and your state, and a handful of jurisdictions switch it off entirely, so do not assume it is always there. Entain has additionally dabbled in free-to-enter formats, including slots tournaments that pay real cash to the leaders. Our free slots section has more on practice play.
Play for real money. See how deposits, bonuses and cashouts work at licensed US operators before your first spin. Real-Money Slots Guide
Frequently Asked Questions
Who owns WIN Studios?
WIN Studios is owned by Entain, the global gambling group that co-owns BetMGM alongside MGM Resorts International. It is Entain’s in-house game development operation, with roots tracing back through Bwin.Party and GVC Holdings to PartyGaming.
Where can I play WIN Studios slots in the US?
Legally and for real money, at BetMGM Casino and Borgata Casino in states where they are licensed for online casino play, such as New Jersey, Pennsylvania, Michigan and West Virginia. Because the studio is in-house, its slots are effectively exclusive to that Entain and MGM ecosystem.
Are WIN Studios slots exclusive to BetMGM?
Effectively yes in the US, though they are shared with sister brand Borgata, which runs almost the same library. You will not find these exact titles at unrelated casino operators, and several are marketed specifically as BetMGM exclusives.
What is the most popular WIN Studios slot?
Melon Madness Megaways is the flagship and most talked-about title, thanks to its Megaways engine and large multi-tier progressive. Independence Pays is another standout because it links into The Big One jackpot network. Several WIN Studios titles rank among BetMGM’s top-performing slots.
What RTP do WIN Studios slots offer?
Most listed figures fall in the mid-90s percent range, roughly 95.5 to 96.8 percent, with Galacticos near the top. High-volatility jackpot games run lower; Melon Madness Megaways has been listed around 91.4 percent. Always confirm the RTP shown in the game, since it can vary by state.
Do WIN Studios slots have progressive jackpots?
Yes. Several feed The Big One, an in-house state-by-state progressive network exclusive to the BetMGM and Borgata ecosystem, which has reached multi-million-dollar levels. Melon Madness Megaways also carries its own multi-tier progressive.
Are WIN Studios slots fair and safe?
When played at licensed BetMGM or Borgata sites, yes. Games and their random number generators are tested and certified by independent labs such as GLI and iTech Labs under the oversight of state regulators like the New Jersey Division of Gaming Enforcement.
Can I play WIN Studios slots for free?
Often, yes. Many titles offer a demo mode with virtual credits, though availability depends on the operator and your state, and some jurisdictions restrict free play. Only real-money play at a licensed casino can pay real winnings.
How many slots does WIN Studios make?
The studio does not publish an official live count, so treat any figure as an estimate. It runs a focused, growing catalog rather than a high-volume one, with a steady stream of new US-targeted titles built for BetMGM.
Can I use a BetMGM or Borgata welcome bonus on WIN Studios slots?
Usually yes. WIN Studios titles are standard real-money slots in the lobby, so in most cases they count toward playing through casino bonus funds, and their lower-stakes options make them a common landing spot for new-player credits. Bonus terms, eligible games and wagering contribution rates are set by the operator and can change, so read the current promotion rules before you opt in.
What are the bet ranges, and are these penny slots?
Stakes vary by title, but the catalog is built to welcome small budgets alongside bigger ones, with many games accepting low minimum spins in the penny-slot range and scaling up for higher rollers. The exact minimum and maximum bet, plus any required stake to qualify for a linked jackpot, are shown on each game’s bet panel, so confirm them before spinning.
Do WIN Studios slots appear in casino tournaments?
At times. Entain has run slots tournaments and free-to-enter formats across its platforms, and WIN Studios games can feature in those events. Whether a given tournament is live, and which titles it includes, depends on the operator and your state, so watch the promotions tab at BetMGM or Borgata.
Is WIN Studios the same as other Entain in-house content?
WIN Studios is the primary name for Entain’s proprietary casino game development, and BetMGM markets various in-house titles under related branding. The common thread is that Entain owns the content and the jackpot networks, which is what makes them exclusive.
The bottom line on WIN Studios slots
WIN Studios is less a supplier you shop around for than the in-house creative engine of the BetMGM and Borgata brands. Entain ownership cuts both ways: it limits where you can play, but it also delivers genuine exclusives, in-house progressives you cannot chase anywhere else, and slots built for the US regulated market. The catalog is focused rather than vast, most titles sit in the competitive mid-90s for RTP, and the volatility spread serves steady players and jackpot hunters alike. If they appeal to you, play them at a licensed BetMGM or Borgata casino in a legal state, confirm each game’s figures on its own screen, and treat the headline jackpots as the long shots they are.
Prefer a US-facing alternative? If you are outside a regulated state, see how offshore slot sites compare on selection and access. Offshore Slot Sites
Play responsibly
Treat a WIN Studios slot the way you would treat a night out: a cost you accept in advance, not an income you count on. The math never tilts toward the player over time, so decide what you are willing to spend and how long you will play before the first spin, and walk away when either limit is reached rather than trying to win it back. To wager real money on these games you need to be at least 21 and physically inside a state that licenses online casino play, which the app confirms by location before it lets you deposit. Anyone who feels their play slipping past their own limits can reach trained, confidential help any time by calling 1-800-GAMBLER, which offers free support around the clock.
Need help? Call or text the National Problem Gambling Helpline at 1-800-GAMBLER — free, confidential and available 24/7. You can also reach a counselor at 1-800-522-4700. You must be at least 21 to play. Last reviewed: August 2026.
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