ReelPlay Slots: The Infinity Reels Studio at US Online Casinos
ReelPlay slots are best known for one big idea: reels that keep multiplying as long as you keep winning. The Australian studio invented the patented Infinity Reels mechanic, and its Infinity Reels slots, along with a growing catalog of Megaways and 10K Ways games, now reach players at regulated American casinos. If you are exploring the best USA slots and want to understand where ReelPlay online slots came from, how the endless reels actually work, and which licensed US operators carry them, this page pulls the details together. Below you will find the studio’s history, its unusual partner-studio network, the mechanics behind titles like El Dorado Infinity Reels and Money Mariachi Infinity Reels, typical RTP and volatility figures, and short reviews of the regulated casinos with ReelPlay slots in their lobbies.
Who is ReelPlay?
ReelPlay was founded in 2014 in Sydney, Australia, under the name Chance Interactive. For its first several years the company built content quietly and licensed technology to other suppliers. In 2019 it rebranded to ReelPlay, and later that year it launched the game that defined its reputation: El Dorado Infinity Reels, the debut of the Infinity Reels feature. The studio is led by chief executive David Johnson and still runs its core development out of Sydney, with commercial and account teams supporting operators across Europe and North America.
ReelPlay is a specialist, not a generalist. It does not make table games, live dealer products or bingo. It makes video slots, and it makes them for two audiences at once: players who load the games in a casino lobby, and other studios and operators who license ReelPlay’s mechanics and distribution. That dual role is central to understanding the brand. When you see the ReelPlay name on a game, it may be a slot the studio built entirely in-house, or a slot built by a development partner that used ReelPlay’s technology and publishing pipeline to reach the market.
In the United States, ReelPlay operates as a licensed supplier. The studio holds supplier approvals with the Pennsylvania Gaming Control Board and the New Jersey Division of Gaming Enforcement, the two agencies that gate almost all regulated slot content on the East Coast. Those approvals are what allow real-money ReelPlay slots to appear inside apps like FanDuel Casino and BetMGM Casino rather than only on offshore sites. Internationally the company also supplies regulated European markets, and its games are tested by independent laboratories before they go live, which is covered in the safety section further down.
The Partner-Studio Network Model
Most slot suppliers publish only their own games. ReelPlay built something closer to a network. Alongside its in-house output, the company runs a development program that lets independent studios design slots and then plug into ReelPlay’s technology, its signature mechanics and its distribution deals with the big aggregators. The result is that a small studio with a good idea can license Infinity Reels, build a game, and get it in front of a global audience without owning the plumbing themselves.
Named development partners in the ReelPlay orbit include Bad Dingo, whose Golden Haul Infinity Reels became one of the more visible partner releases, plus Sydney studios such as Boomerang Studios, Hot Rise Games and Games Lab. On the distribution side, ReelPlay content travels through several of the largest content networks in the industry. Games have shipped through Yggdrasil’s YG Masters program, through the aggregation platform operated by Relax Gaming, and through Light and Wonder’s content channels. ReelPlay has also collaborated with Big Time Gaming to build slots powered by the Megaways engine, and it licensed the Gigablox mechanic from Yggdrasil for a run of oversized-symbol releases.
The network runs the other way too. ReelPlay does not just borrow other studios’ engines; it licenses its own Infinity Reels mechanic out to third parties. Rival suppliers including Relax Gaming, PG Soft and Light and Wonder have built Infinity Reels games under license, which is unusual in an industry where studios normally guard their signature features. That willingness to license, publish and co-develop is the thread that ties the whole ReelPlay catalog together.
One footnote from the studio’s history explains why the branding matters. When ReelPlay introduced Infinity Reels, it ran up against NetEnt, which had developed a very similar expanding-reel concept it called InfiniReels. Rather than fight, the two suppliers reached an agreement, and ReelPlay went on to build and license Infinity Reels widely. If you have played an expanding-reel slot from NetEnt or another studio, the family resemblance is not a coincidence.
Key Milestones
- 2014. Founded in Sydney as Chance Interactive, working mainly as a technology and content licensor.
- 2019. Rebranded to ReelPlay and, that November, released El Dorado Infinity Reels, the Infinity Reels debut.
- 2021. Launched the 10K Ways series with Hypernova 10K Ways and expanded the partner-studio program.
- 2024. Licensed Yggdrasil’s Gigablox for oversized-symbol slots and began wiring select titles into network jackpot pools.
- 2026. Named the first content partner on RLX Gaming’s new United States aggregation platform.
How Many ReelPlay Slots Are There?
Counting the ReelPlay catalog depends on where you draw the line. Under its own name the studio has released roughly 30 slots, a deliberately curated library rather than a flood of monthly clones. Once you fold in the partner studios that build on ReelPlay technology and publish through the same network, the effective catalog runs to dozens more. Not every title that exists globally is available in every regulated US market, because each state licenses content separately and operators choose which games to certify. In practice, a US player will see a rotating subset of the total catalog, weighted toward the studio’s proven performers.
The lineup is organized around a handful of signature engines: Infinity Reels titles, the 10K Ways series, Megaways slots, Gigablox releases and the studio’s own Radial Reels experiment. Knowing which engine a game uses is the fastest way to understand how it plays.
The Infinity Reels Mechanic in Depth
Infinity Reels is the feature that made ReelPlay’s name, and it is genuinely different from a standard payline slot. A spin starts with three reels. Symbols pay from left to right in the usual way, but the twist is on the right edge of the grid. Whenever the rightmost reel completes a winning combination, or improves a win already in progress, the game adds a brand new reel to the right and respins that fresh reel. If the new reel also contributes to a win, another reel is added. The process repeats with no fixed ceiling, so a single lucky spin can stretch the grid far wider than the three reels it started with.
Two things compound while that happens. First, the grid keeps growing, so more matching symbols can land and the potential win keeps climbing. Second, most Infinity Reels games attach a running multiplier to the chain: each additional reel bumps the multiplier up by one, so a long sequence of added reels is both wider and worth progressively more per win. A modest starting combination can snowball into the game’s biggest payout of the session if the reels keep extending.
Many Infinity Reels titles also carry a fixed jackpot tied to the length of the chain. In El Dorado Infinity Reels, for example, stretching a single spin to 12 or more reels triggers the Infinity Bonus, a jackpot worth 888 times the total bet, awarded on top of whatever the symbols themselves pay. The exact trigger length and jackpot size vary from game to game, but the principle is consistent: the longer you can keep the reels expanding, the bigger the reward, with a headline prize reserved for the rare marathon spins. Free-spins rounds usually make expansion easier or let the multiplier carry over between spins, which is where the largest Infinity Reels wins tend to come from.
Other ReelPlay Mechanics
Infinity Reels gets the headlines, but ReelPlay leans on several other engines, and knowing which one a game uses tells you a lot about how it will play.
- 10K Ways. A fixed 4-5-5-5-5-4 reel layout that delivers exactly 10,000 ways to win on every spin. It trades the wild swings of a dynamic grid for a steadier, high-ways base game. John Wayne 10K Ways, Ramesses Gold 10K Ways and Hercules 10K Ways are examples.
- Megaways. Built under license from Big Time Gaming, these titles use a six-reel grid with a variable number of symbols per reel, producing up to 117,649 ways to win. Big Bucks Bandits Megaways, Ramesses Gold Megaways and Hypernova Megaways sit in this group. You can read more on the Megaways slots hub.
- Gigablox. Licensed from Yggdrasil, Gigablox drops oversized symbols onto the grid, often two-by-two up to much larger blocks, frequently paired with a Hold and Win style bonus. Lions Gigablox, Giga Bass Gigablox and Mega Pearl Gigablox use it.
- Radial Reels. A ReelPlay original that arranges symbols in three concentric rings rather than straight columns, creating paylines that run through the center of the wheel. It is the studio’s most experimental layout.
Across all of these, the studio tends to layer familiar bonus tools on top: cascading or respinning symbols, sticky wilds, growing multipliers, gamble features and free-spins rounds. The engine sets the shape of the grid; the bonus features decide how volatile the ride gets.
Signature and Most Popular ReelPlay Titles
The table below collects widely available ReelPlay slots with their headline figures. RTP figures are the studio’s default published values, and several titles ship in multiple RTP versions that an operator can choose from, so the exact number in your casino may differ slightly. Max win is expressed as a multiple of the stake.
| Slot | Engine | Default RTP | Volatility | Top win (x stake) |
|---|---|---|---|---|
| El Dorado Infinity Reels | Infinity Reels | 96.54 percent | High | about 6,250 |
| Money Mariachi Infinity Reels | Infinity Reels | 96.26 percent | High | tens of thousands |
| Odin Infinity Reels Megaways | Infinity Reels plus Megaways | 96.18 percent | Very high | very high |
| Zodiac Infinity Reels | Infinity Reels | 95.57 percent | High | about 3,956 |
| Buster Hammer Carnival | Cluster and multiway | 96.34 percent | High | about 34,816 |
| Big Bucks Bandits Megaways | Megaways | 96.10 percent | High | 10,000 |
| Ramesses Gold Megaways | Megaways | 96.22 percent | High | high |
| Ramesses Gold 10K Ways | 10K Ways | 96.10 percent | Medium to high | about 9,065 |
| Hypernova Megaways | Megaways | around 96 percent | Medium to high | high |
| Golden Haul Infinity Reels (Bad Dingo) | Infinity Reels | 95.10 percent | High | high |
El Dorado Infinity Reels remains the flagship and the game most players associate with the studio, thanks to its clean lost-city theme and the 888 times jackpot for long reel chains. Money Mariachi Infinity Reels, a festive follow-up, is one of the studio’s biggest in terms of top-end potential, with a headline win advertised in the tens of thousands of times the stake and high volatility to match. Odin Infinity Reels Megaways is the crossover fans point to when they argue ReelPlay makes some of the most punishing yet rewarding math in the sector, combining expanding reels with the Megaways engine at maximum volatility.
Beyond those, Buster Hammer Carnival, Big Bucks Bandits Megaways and the Ramesses Gold pair are dependable lobby staples. The Infinity Reels family runs deep, too, with titles such as Thor Infinity Reels, Gems Infinity Reels, Martian Miner Infinity Reels and West Coast Cash Infinity Reels all built on the same expanding-grid idea. Newer 10K Ways and Gigablox releases, including John Wayne 10K Ways, Spartacus 10K Ways, Lions Gigablox and Giga Bass Gigablox, keep the catalog fresh, with some later 10K Ways titles advertising top prizes into the hundreds of thousands of times the stake, a remote best case rather than a realistic session. For a broader look at what is trending, see our most popular slots and new slots pages, which track releases across every studio, not just ReelPlay.
Play ReelPlay slots for real money. Fund an account at a state-licensed operator and stake actual cash on the Infinity Reels chain under regulator oversight. Real-Money Slots
RTP Range and the High and Low RTP Titles
The return-to-player figure is a modeled long-run average, estimating how much of every dollar wagered a game gives back across millions of spins; a title rated 96.5 percent theoretically keeps about three and a half cents on the dollar over a huge sample, though any single session can land far off that line. ReelPlay’s default figures sit in a familiar band, roughly 95 to 96.5 percent, in line with the wider online-slots market. Among the studio’s better-known games, El Dorado Infinity Reels tops the range at 96.54 percent, trailed closely by Buster Hammer Carnival at 96.34 percent and Money Mariachi Infinity Reels at 96.26 percent. Toward the lower end, Zodiac Infinity Reels runs at 95.57 percent and the partner-built Golden Haul Infinity Reels at 95.10 percent.
One important caveat applies to ReelPlay and many modern suppliers: a single title often ships in more than one RTP configuration. Ramesses Gold 10K Ways, for instance, is offered at a default of 96.10 percent but also in reduced 94 percent and 90.5 percent versions, and the operator decides which one to run. That means the number printed in a slot’s help screen at one casino can differ from the same game at another. It is always worth opening the game rules to confirm the live figure. For a deeper primer on what the number does and does not promise, our RTP breakdown lays it out.
Check the live figure. Because a single ReelPlay title can ship in multiple RTP versions, always open the game’s help screen at your casino to confirm the number you are actually playing.
Volatility Range With Examples
If there is a single word for ReelPlay’s house style, it is volatile. That trait measures the size and rhythm of a game’s payouts: a high one pays seldom but can pay enormously, while a gentler one trickles out smaller wins more often. The mechanics that made the studio famous, expanding reels with compounding multipliers, are swingy by design, producing long barren stretches broken up by the occasional huge hit. Most Infinity Reels titles land in the high to very high bracket. Odin Infinity Reels Megaways is frequently rated at the maximum, and El Dorado Infinity Reels, Zodiac Infinity Reels and Money Mariachi Infinity Reels all sit firmly on the high side.
The 10K Ways and some Megaways titles are a touch calmer. Ramesses Gold 10K Ways and Hypernova Megaways are usually described as medium to high, offering more frequent smaller wins to balance the big-hit potential. There is no genuinely low-volatility ReelPlay slot; even the studio’s steadier games are built for players who accept variance in exchange for a shot at a life-changing multiplier. If you prefer smoother sessions, size your bets down and treat the top prizes as a long shot. Our volatility explainer helps you line a game’s swinginess up with your bankroll.
Special Features and Mechanics
ReelPlay games share a recognizable feature toolkit that shows up in different combinations across the catalog:
- Expanding reels. The Infinity Reels engine itself, adding reels to the right on every improving win, often with a per-reel multiplier that climbs as the chain grows.
- Running and progressive multipliers. Multiplier values that increase during a chain or carry between free spins, which is where the biggest payouts accumulate.
- Free spins and respins. Bonus rounds that make reel expansion easier, lock the multiplier in place, or add sticky symbols to build longer chains.
- Hold and Win style bonuses. Common on the Gigablox titles, where cash symbols lock and respin toward fixed or jackpot prizes.
- Fixed jackpots. The Infinity Bonus and similar length-based awards, such as the 888 times prize in El Dorado Infinity Reels, paid when a spin reaches a set number of reels.
- Gamble features. Optional double-or-nothing steps on some titles for players who want to press their luck after a win.
- Network jackpots. A handful of recent releases connect to shared jackpot pools, such as the Dream Drop system, adding a randomly awarded progressive prize where the operator supports it.
- Feature buy. Some games let you pay an upfront price to jump straight into the bonus. It is popular internationally but is frequently switched off in regulated US markets, so do not count on it in a licensed American app.
The studio builds everything in HTML5, so the same feature set behaves identically on desktop and mobile. There are no separate downloads or Flash dependencies; the games render in the browser or inside a casino app.
Safety, Security and Audits
ReelPlay’s games run on a certified random number generator, the software that decides every spin’s outcome independently of the last. If you want the underlying concept, our RNG explainer walks through how a certified generator keeps results fair and unpredictable. On top of that generator, ReelPlay’s content is reviewed by independent testing laboratories. Independent testing houses associated with the studio’s certification work include eCOGRA, GLI and iTechLabs, among others, each of which verifies that a game’s math matches its published RTP and that the RNG clears statistical fairness tests before the title is approved for a regulated market.
Licensing is the other half of the safety picture, and it is the part that matters most for US players. A slot only reaches a legal American casino after both the studio and the individual game clear the relevant state regulator. ReelPlay holds supplier approvals with the Pennsylvania Gaming Control Board and the New Jersey Division of Gaming Enforcement, and its games are certified per state. When you load a ReelPlay title inside a licensed operator in New Jersey, Pennsylvania, Michigan or West Virginia, you are playing content that has passed both laboratory testing and a government approval process. That chain of oversight is exactly what separates regulated play from unlicensed offshore sites, and it is the reason we only cover state-licensed operators here.
Certified and state-approved. At a licensed US casino, every ReelPlay title has cleared both independent lab testing and a state regulator before it reaches your screen.
How ReelPlay Compares to Other Studios
ReelPlay occupies a distinct niche. Where a volume house like Pragmatic Play ships hundreds of titles, ReelPlay stays narrow and mechanic-led, backing a few strong ideas over a sprawling library. Its closest cousins are the boutique innovators: the punchy math of Hacksaw Gaming or the polished production of Play’n GO. What sets it apart is ownership of a genuinely original mechanic in Infinity Reels, plus the network model that lets it publish partner studios and license that mechanic outward. If you enjoy high-variance games built around a single clever hook, ReelPlay will feel like home.
Regulated US Casinos With ReelPlay Slots
ReelPlay’s American footprint has grown steadily, and it took a notable step in 2026 when RLX Gaming launched its United States aggregation platform with ReelPlay as its first content partner. That rollout began in New Jersey and Pennsylvania, led by the title Lucky Lady Leprechaun, with additional states planned as the network expands. Separately, ReelPlay games already appear in several major regulated apps. The short reviews below focus specifically on the ReelPlay experience at each site rather than the operator overall; for full write-ups, follow the links.
FanDuel Casino
FanDuel Casino is the most reliable regulated home for ReelPlay slots in the states where it operates, including New Jersey, Pennsylvania, Michigan and West Virginia. Its lobby has carried a solid rotation of the studio’s headliners, with titles such as Money Mariachi Infinity Reels, Hypernova Megaways, West Coast Cash Infinity Reels and Age of Beasts Infinity Reels surfacing in the provider filter. Searching by studio name or using the game-provider filter is the quickest way to pull the current ReelPlay list, since FanDuel refreshes its catalog often. For players who want the Infinity Reels experience on a well-known regulated app, this is the first place to look. Read the full FanDuel Casino review for banking, bonuses and state availability.
BetMGM Casino
BetMGM Casino has also featured ReelPlay content, and the operator has gone as far as publishing its own strategy notes on titles like Zodiac Infinity Reels, a sign the game gets real placement rather than a token listing. Across BetMGM’s regulated states you will typically find a curated handful of ReelPlay’s Infinity Reels and Megaways titles rather than the entire catalog, which is normal for a large operator that certifies content selectively. If you already play at BetMGM, it is worth filtering for the studio to see which expanding-reel games are live in your state. The full BetMGM Casino review covers the wider game library and promotions.
Beyond these two, ReelPlay content has reached other licensed US operators as its distribution deals mature, and the RLX Gaming partnership should widen availability further. Because each state approves games individually, the exact selection differs by operator and jurisdiction. Our New Jersey, Pennsylvania and Michigan pages track which casinos are live in each market, and the full software providers hub lists every studio we cover.
Compare the licensed options. See every state-regulated casino that carries certified ReelPlay slots, with banking, bonuses and availability for your state. Regulated US Casinos
Mobile Play
ReelPlay builds in HTML5, and that single decision makes handheld play painless. The same game file resizes to fit a phone or tablet and loads straight in a mobile browser or inside a regulated casino app, with nothing extra to install. Expanding-reel titles pose an obvious layout question, since the grid grows as you win, and the studio answers it by keeping symbols legible even on a narrow screen; tapping to spin, adjusting stakes and using the gamble step all translate cleanly to touch. Your device and connection matter more to smoothness than the game does, and the odds are identical on a laptop or a phone. Our mobile slots hub digs deeper into playing from a phone.
Real-Money and Free Play
You can approach a ReelPlay slot two ways. The real-money route at a state-licensed operator is what most readers want: you fund an account, stake actual cash, and any multiplier or jackpot converts to a withdrawable balance under regulator oversight. The demo route, where it exists, hands you play credits to rehearse a title without money on the line, and given how streaky these games are, a few practice spins are worth the time just to feel how the Infinity Reels chain builds.
Do not assume the free mode is always there, though. Regulated US jurisdictions handle demos inconsistently; several require you to sign in first, and a few will not open a game until the account is funded, so a practice version you spotted on an overseas site can be missing inside a licensed American app. Our free slots and real-money slots pages spell out the distinction.
Frequently Asked Questions
What are ReelPlay slots best known for?
The patented Infinity Reels mechanic, which adds a new reel to the grid every time a win lands or improves on the rightmost reel, usually alongside a multiplier that climbs with each added reel. El Dorado Infinity Reels was the debut, and the studio has built a whole family of expanding-reel games since.
Is ReelPlay a single studio or a network?
Both. ReelPlay develops its own slots and also runs a partner-studio network, letting independent developers like Bad Dingo license its mechanics and publish through its distribution deals. The company additionally licenses Infinity Reels out to rival suppliers such as Relax Gaming and PG Soft.
How does the Infinity Reels jackpot work?
Many Infinity Reels titles award a fixed jackpot when a single spin extends the grid to a set number of reels. In El Dorado Infinity Reels, reaching 12 or more reels triggers the Infinity Bonus, worth 888 times the total bet, paid on top of the symbol wins. The exact trigger and prize vary by game.
What is the typical RTP of a ReelPlay slot?
Default figures generally fall between about 95 and 96.5 percent. El Dorado Infinity Reels is among the highest at 96.54 percent. Be aware that some titles ship in multiple RTP versions and the operator chooses which to run, so always check the game’s help screen for the live number.
Are ReelPlay slots high volatility?
Mostly, yes. The Infinity Reels titles are high to very high volatility, with Odin Infinity Reels Megaways often rated at the maximum. The 10K Ways and some Megaways games are a little calmer at medium to high, but the studio does not make a genuinely low-volatility slot.
Which US casinos have ReelPlay slots?
Regulated operators including FanDuel Casino and BetMGM Casino have carried ReelPlay titles, and a 2026 aggregation deal with RLX Gaming is expanding availability in New Jersey and Pennsylvania. The exact selection differs by operator and state because games are approved individually.
Are ReelPlay slots safe and fair?
At a licensed US casino, yes. The games run on a certified random number generator, are tested by independent laboratories such as eCOGRA and GLI, and are approved by state regulators including the Pennsylvania Gaming Control Board and the New Jersey Division of Gaming Enforcement before going live.
Can I play ReelPlay slots for free?
Sometimes. Demo versions exist for many titles, but free play is not guaranteed inside every regulated US app, and some states require a funded, logged-in account before a game will load. Where available, demo mode is a good way to learn the volatile Infinity Reels rhythm before wagering.
How many ReelPlay slots are there?
The studio has released roughly 30 slots under its own name, with the wider partner network adding dozens more. Not all of them are certified in every US state, so American players see a curated subset weighted toward proven performers.
Responsible Gambling
Because ReelPlay leans so hard on high-variance math, dry runs between the big multipliers are normal, and that puts a premium on discipline. Decide up front how much you are prepared to stake, keep that figure to money you can lose without it stinging, and step away rather than trying to claw a loss back. Every licensed US casino hands you controls to enforce those limits, from deposit and wager caps to session timers, cooling-off windows and full self-exclusion, and there is nothing to lose by switching them on early. Should the enjoyment start to fade, confidential support is one phone call away at any hour through the national helpline at 1-800-GAMBLER. Play only where you meet your state’s minimum age for casino gaming, usually 21, and only while you are physically inside a jurisdiction where the operator holds a license.
Need help? Call or text the National Problem Gambling Helpline at 1-800-GAMBLER — free, confidential and available 24/7, or reach a counselor at 1-800-522-4700.
Last reviewed: August 2026
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