What Are Megaways Slots?
Megaways slots are a type of online slot machine that use a patented random reel modifier system to generate a constantly changing number of symbols per reel on every spin. Rather than the fixed paylines you’ll find on a traditional slot, Megaways games can produce anywhere from a handful to hundreds of thousands of different ways to win on a single spin — all decided at random before the reels even stop spinning.
The mechanic was invented and patented by Big Time Gaming (BTG), an Australian developer that launched the first true Megaways title, Dragon Born, back in 2016. The concept took off spectacularly when BTG released Bonanza Megaways in 2016 — widely considered the slot that put Megaways on the map and one of the most influential releases in online casino history.
Today, Big Time Gaming licences the Megaways engine to dozens of major developers — including Red Tiger, Blueprint Gaming, Pragmatic Play, iSoftBet and more — meaning there are now hundreds of Megaways titles available at UK online casinos.
- Megaways slots were invented by Big Time Gaming and first appeared in 2016
- Reels display a random number of symbols per spin, creating up to 117,649 ways to win
- The mechanic is licensed to many major developers, so titles vary widely in theme and features
- Cascading reels, free spins, and unlimited multipliers are common bonus features
- Megaways slots tend to be high-volatility — big wins are possible but can be infrequent
Our top-rated UK casinos all carry the full Megaways library. New customers only — T&Cs apply.
How Do Megaways Slots Work?
The core Megaways mechanic centres on variable reel heights. On a standard six-reel Megaways slot, each reel can display between two and seven symbols simultaneously. Before each spin, a random number generator determines exactly how many symbols will appear on each reel — independently and at random.
The total number of ways to win is calculated by multiplying the number of symbols shown on each reel together. If all six reels show seven symbols, the calculation becomes:
7 × 7 × 7 × 7 × 7 × 7 = 117,649 ways to win
Conversely, a spin where all reels show two symbols generates just 2 × 2 × 2 × 2 × 2 × 2 = 64 ways. Most spins land somewhere between these extremes, and the ways counter — displayed prominently on screen — updates in real time before each spin so you always know what you’re working with.
Wins on a Megaways Slot
Unlike traditional paylines, Megaways wins are calculated using an anywhere-adjacent system. A winning combination is formed when matching symbols land on consecutive reels starting from the leftmost reel — the symbols do not need to occupy a specific row. This is what makes such enormous win-way counts possible.
Cascading Reels (Tumble Feature)
Almost every Megaways slot pairs the variable reels with a cascading reels mechanic — often called the Tumble, Avalanche, or Collapse feature depending on the developer. Here’s how it works:
- You land a winning combination.
- The winning symbols are removed from the reels.
- New symbols fall down from above to fill the gaps.
- If the new symbols form another win, the process repeats.
- This continues until no new winning combinations are formed.
This chain of cascades can happen multiple times on a single paid spin, meaning one spin can generate several winning payouts before the round is over.
Megaways Features Explained
Megaways slots pack in a dense set of bonus features that go well beyond the base mechanic. Here’s a breakdown of the features you’ll encounter most frequently.
Unlimited Win Multipliers
Many Megaways titles include a win multiplier that grows with each cascade. The multiplier often starts at 1x and increases by one (or more) with each successive cascade. In free spins rounds, this multiplier frequently never resets — meaning a long cascade chain late in a bonus round can produce staggering multiplier values. This is the primary driver of the enormous jackpot potential that Megaways titles are famous for.
Free Spins Bonus Round
Most Megaways games feature a free spins round, typically triggered by landing three or more scatter symbols anywhere on the reels. During free spins:
- The unlimited multiplier (described above) is usually active
- Cascades tend to produce bigger multiplier jumps than in the base game
- Additional scatters may award extra free spins (retriggering)
- Some games offer player choices — such as fewer spins with a higher starting multiplier
Reaction/Cascade Multipliers in Base Game
Even outside of free spins, cascading wins in the base game often come with an increasing multiplier. This creates moments where a seemingly ordinary spin turns into a multi-cascade sequence with a climbing multiplier — one of the most exciting aspects of the Megaways format.
Ante Bet (Feature Buy)
A growing number of Megaways slots offer an Ante Bet option that increases your stake by a set percentage (commonly 25–50%) in exchange for doubled scatter probability. This gives players a higher chance of triggering the bonus round on any given spin, though it increases the effective cost per spin accordingly.
Note: the Buy Feature (which allows direct purchase of the free spins round) is not available to players at UK-licensed casinos. The UKGC banned this option for UK players, though Ante Bet remains permitted.
Megaways Horizontal Reel (Top Row)
Many Megaways games include an additional horizontal reel running across the top of the main grid — often called the Horizontal Reel or Slider. Symbols landing on this reel may create extra matching opportunities or serve as additional scatter positions, further increasing the maximum ways to win beyond the standard 117,649.
Megaways Features at a Glance
| Feature | How It Works | Found In |
|---|---|---|
| Variable Reels | 2–7 symbols per reel, determined randomly each spin | All Megaways slots |
| Cascading Reels | Winning symbols removed; new symbols fall in. Repeats if new wins form. | Most Megaways slots |
| Unlimited Multiplier | Grows +1 per cascade; does not reset in free spins | Bonanza, Extra Chilli, many others |
| Free Spins Round | Triggered by 3+ scatters; multiplier active throughout | Most Megaways slots |
| Ante Bet | Increase stake by 25–50% for higher scatter frequency | Bonanza, many BTG titles |
| Top Horizontal Reel | Extra symbols along the top row for additional ways | Bonanza, White Rabbit, others |
Best Megaways Slots to Play in 2025
With hundreds of Megaways titles on the market, knowing where to start can be daunting. Our experts have played through the most popular and best-rated Megaways games available at UK casinos. These are the titles genuinely worth your time.
1. Bonanza Megaways — Big Time Gaming
Max Ways: 117,649 · RTP: 96% · Volatility: Very High
The original and still arguably the best. Bonanza set the template for the genre: a mining theme, cascading reels, unlimited free spins multiplier, and the satisfying satisfaction of watching a cascade chain build and build. Its free spins round — triggered by landing G, O, L, D across the top row — remains one of the most exciting bonus rounds in online slots. Essential playing for anyone new to Megaways.
2. Extra Chilli Megaways — Big Time Gaming
Max Ways: 117,649 · RTP: 96.82% · Volatility: Very High
BTG’s spiritual sequel to Bonanza strips things back to basics and sharpens the mechanics. The free spins feature allows players to gamble extra scatters for more free spins — a risk-reward decision that adds genuine strategic interest. Slightly higher base RTP than Bonanza.
3. Gonzo’s Quest Megaways — Red Tiger / NetEnt
Max Ways: 117,649 · RTP: 96.00% · Volatility: High
The beloved Gonzo’s Quest adventure translated into Megaways format by Red Tiger. The avalanche feature and multiplier trail (1x, 2x, 3x, 5x in the base game; 3x, 6x, 9x, 15x in free spins) are retained from the original, now overlaid on a Megaways grid. One of the most accessible entry points into the format.
4. Deadwood Megaways — No Limit City
Max Ways: 248,832 · RTP: 96.32% · Volatility: Very High
No Limit City used the Megaways licence to build one of the most visually impressive titles in the genre. The Wild West theme is rendered beautifully, and the xNudge wild mechanic — where nudging wilds carry multipliers — adds an extra layer that goes beyond the standard BTG blueprint.
5. Primal Megaways — Blueprint Gaming
Max Ways: 117,649 · RTP: 96.05% · Volatility: High
Blueprint’s prehistoric entry into the Megaways catalogue is accessible and well-balanced, with a free spins round that offers five different starting modes. Its Hold & Win-style mystery symbols in the base game keep the base spin experience more engaging than most. A good choice if you find pure high-volatility Megaways too brutal on the bankroll.
All titles above are available at our expert-reviewed UK casino picks. 18+ · T&Cs apply.
Megaways RTP and Volatility Explained
Before you play any Megaways slot, it pays to understand two critical metrics: Return to Player (RTP) and volatility. Getting these wrong is one of the most common mistakes casual slots players make.
What is RTP?
RTP is the theoretical percentage of all wagered money that a slot returns to players over an extremely large number of spins. A slot with a 96% RTP will — in theory — return £96 for every £100 wagered across millions of spins. It is a long-run statistical average, not a guarantee of your session results.
Most Megaways slots sit in the 95–97% RTP range, which is broadly competitive with the wider online slots market. However, you should check the specific RTP of any title before playing — and be aware that some casinos use lower RTP versions of popular games. The Bonanza Megaways base RTP is 96%, for example, but this can vary by casino.
Volatility: Why Megaways Slots Play Differently
Virtually all Megaways slots are classified as high or very high volatility. This means:
- Individual wins tend to be infrequent in the base game
- When wins do land — especially in the bonus round — they can be substantial
- Your bankroll can deplete quickly during dry spells, even with a good overall RTP
- The variance between sessions is high — some sessions will end poorly, others explosively
This high-volatility profile is an intentional consequence of the Megaways design. The potential for enormous cascading multiplier chains in free spins is what players are really paying for. But it also means you should always approach Megaways slots with a bankroll management plan and only ever play within your means.
Megaways RTP Comparison Table
| Slot Title | Developer | RTP | Max Ways | Max Win |
|---|---|---|---|---|
| Bonanza Megaways | Big Time Gaming | 96.00% | 117,649 | ~£500,000 |
| Extra Chilli Megaways | Big Time Gaming | 96.82% | 117,649 | Uncapped |
| Gonzo’s Quest Megaways | Red Tiger / NetEnt | 96.00% | 117,649 | ~£1,000,000 |
| Deadwood Megaways | No Limit City | 96.32% | 248,832 | ~£800,000 |
| Primal Megaways | Blueprint Gaming | 96.05% | 117,649 | ~£250,000 |
| White Rabbit Megaways | Big Time Gaming | 97.72% | 248,832 | ~£1,000,000 |
RTPs shown are standard base figures. Always verify the RTP directly within the game information panel at your chosen casino, as operators may configure alternative RTP settings.
How to Play Megaways Slots: Step by Step
If you’re new to Megaways, here’s how to get started at any UK online casino. The process is consistent across virtually all Megaways titles.
- Choose a UKGC-licensed casino. All casinos listed in our casino reviews section hold a UK Gambling Commission licence. This ensures fair play, fund protection, and access to responsible gambling tools.
- Register and verify your account. UK casinos require identity verification (Know Your Customer / KYC) before allowing withdrawals. Completing this upfront saves time later.
- Make a deposit. Most UK casinos accept debit card, PayPal, and bank transfer. Credit card deposits are not permitted at UK-licensed sites.
- Navigate to the slots section and use the search or filter function to find Megaways titles specifically. Most major casinos now have a dedicated Megaways category.
- Open a title and check the paytable. Before betting, always review the paytable (usually found via an “i” or information icon). This shows symbol values, scatter rules, free spins mechanics, and the maximum win.
- Set your bet size. Use the +/- controls to adjust your stake per spin. For high-volatility Megaways slots, we recommend starting with smaller stakes until you understand the game’s rhythm.
- Decide on Ante Bet (if available). This increases your stake by 25–50% for a higher scatter rate. Only use it if you’re comfortable with the increased cost per spin.
- Spin and enjoy. The Megaways counter will display the current number of ways before each spin. Watch the cascades, track the multiplier, and most importantly — play responsibly.
Megaways Slots Tips and Strategy
Online slots are games of chance — no strategy can change the underlying RTP or guarantee a win. But there are sensible approaches that will help you get more from your Megaways sessions.
Set a Session Budget Before You Start
Given the high volatility of Megaways slots, decide exactly how much you’re prepared to spend before you open the game. Once that budget is spent, stop. Never chase losses with money you can’t afford to lose.
Choose Smaller Stakes for Longer Sessions
The appeal of Megaways is in the base-game suspense and the free spins experience. Playing at a stake where your budget lasts 100+ spins gives you a much better chance of hitting the bonus round than blowing through your budget in 20 high-stakes spins.
Check the RTP Before Playing
As noted above, the same Megaways title can be configured with different RTP settings at different casinos. Always check the in-game information panel — the RTP figure there is what applies to your session at that casino.
Understand the Bonus Round Frequency
Most Megaways free spins rounds trigger on average every 150–400 spins. You may wait far longer on any given session. This is normal. Expecting frequent triggers is a common misunderstanding that leads to disappointed, and sometimes reckless, play.
Use Free Spins Bonuses Wisely
Casino welcome bonuses and ongoing free spins promotions can give you extra playtime on Megaways slots without risking more of your own money. Check the wagering requirements carefully — a bonus with 30x wagering is far more achievable than one at 70x. See our casino reviews for a breakdown of bonus terms at each site.
Try Demo Mode First
Most UK online casinos allow you to play Megaways slots in demo mode without a deposit. Use this to learn the specific mechanics of a title — how the cascades feel, how often scatters appear, what free spins look like — before committing real money.
Expert Tip: Megaways slots are built around infrequent but large wins. If you find yourself chasing losses or feeling frustrated after a dry run, it’s a sign to take a break. The high-variance nature of these games means cold patches are expected and normal.
Megaways vs Traditional Slots: Key Differences
If you’re used to classic fruit machines or standard video slots with fixed paylines, Megaways slots represent a noticeably different experience. Here’s how they compare.
| Megaways Slots | Traditional Slots | |
|---|---|---|
| Ways to Win | 2 to 117,649+ (variable each spin) | Fixed (e.g. 10, 25, 243 paylines) |
| Reel Height | Random, changes every spin | Fixed (usually 3–5 rows) |
| Cascading Reels | Almost always included | Increasingly common; not universal |
| Volatility | High to Very High | Low to High (varies widely) |
| Win Multipliers | Often unlimited in free spins | Typically fixed or absent |
| Max Win Potential | Very high (often 50,000x+ stake) | Lower on average |
| Complexity | More complex to understand initially | Simpler; easier for beginners |
| Base Game Experience | Often quieter with big-spin anticipation | More frequent small wins common |
Where to Play Megaways Slots in the UK
Megaways slots are available at all major UKGC-licensed online casinos. When choosing where to play, look for the following:
- Game variety: The best casinos carry hundreds of Megaways titles from multiple developers, not just a handful of the most famous ones.
- Bonus terms: Look for welcome offers with reasonable wagering requirements that can be met playing slots — ideally 30x or under.
- RTP transparency: A trustworthy casino displays the RTP of every game clearly within the game itself.
- Responsible gambling tools: Deposit limits, session time reminders, self-exclusion via GAMSTOP — these should be prominent and easy to use.
- Payment speed: Look for casinos with fast withdrawal processing and a track record of prompt payouts.
Our expert team has reviewed and ranked the leading UK casino sites that carry the best selection of Megaways slots. Each review covers game library, bonus terms, licensing, payment options, and customer support.
In-depth, independently verified reviews of the top UK casino sites for Megaways slots players.
Megaways Slots and Responsible Gambling
Megaways slots are high-volatility games. The combination of large potential wins, fast-paced cascades, and the anticipation of bonus rounds can make them particularly engaging — which is all the more reason to approach them responsibly.
Every UKGC-licensed casino is required to offer responsible gambling tools. Before you start playing, we recommend:
- Setting a deposit limit on your account so you can never spend more than you intend
- Setting a session time reminder so you’re always aware of how long you’ve been playing
- Taking advantage of reality check notifications that show your net session balance
- Using self-exclusion via GAMSTOP if you ever feel gambling is becoming a problem
Free, confidential support is available 24 hours a day from the National Gambling Helpline on 0808 8020 133, or visit BeGambleAware.org.
Remember: gambling is for entertainment. Never bet more than you can afford to lose, and always play within your means.
Megaways Slots: Frequently Asked Questions
Who invented Megaways slots?
Megaways was invented and patented by Big Time Gaming (BTG), an Australian game developer. The mechanic was first used in Dragon Born (2016) and became widely popular with the release of Bonanza Megaways later the same year. BTG now licences the Megaways patent to dozens of other developers.
What is the maximum number of ways to win on a Megaways slot?
On a standard six-reel Megaways grid with a maximum of seven symbols per reel, the maximum is 117,649 ways to win (7⁶). Some titles use extended grids or additional reels to push this higher — Deadwood Megaways, for example, can reach 248,832 ways.
Are Megaways slots fair?
Yes — all Megaways slots offered at UKGC-licensed casinos use certified random number generators (RNGs) that are independently tested by third parties such as eCOGRA, GLI, and iTech Labs. The Megaways mechanic itself determines ways-to-win, but the outcomes of each spin are always governed by an RNG.
Can I buy the free spins bonus on Megaways slots?
Not at UK-licensed casinos. The UK Gambling Commission banned the Feature Buy (bonus buy) option for all UK players in 2021. You can, however, use the Ante Bet feature (where available) to increase your stake slightly in exchange for a higher scatter frequency, which indirectly improves your chances of triggering the free spins round.
What is the best Megaways slot for beginners?
We’d recommend starting with Gonzo’s Quest Megaways or Primal Megaways. Both have clearly explained mechanics, moderate-to-high (rather than extreme) volatility profiles, and engaging bonus rounds that are relatively straightforward to understand. Bonanza Megaways is the genre classic, but its very high variance can be brutal for newcomers on modest budgets.
How often do Megaways free spins trigger?
This varies by title, but most Megaways free spins rounds trigger roughly every 150–400 spins on average. On any individual session, you may hit the bonus much sooner or wait considerably longer — this variance is a core feature of high-volatility slot design. Using Ante Bet (where available) can increase trigger frequency at the cost of a higher stake per spin.
Do Megaways slots have better RTP than regular slots?
Not necessarily. Most Megaways slots sit in the 95–97% RTP range, which is broadly in line with premium online slots generally. What distinguishes Megaways is their volatility profile, not their average return. Always check the in-game information panel to confirm the specific RTP applied at your casino.
Are Megaways slots available on mobile?
Yes — all modern Megaways slots are built with HTML5 technology, which means they run natively in any mobile browser without requiring an app download. The majority of UK casino operators also provide dedicated iOS and Android apps where Megaways titles are available alongside the full game library.
