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Megaways is a licensed reel engine from Big Time Gaming: the number of symbols on each reel changes every spin, producing up to 117,649 ways to win.
It is also the clearest example of the UK/offshore split. The same game ships in two builds, and the offshore one keeps the bonus buy.
We rank by measured payout speed, not commission. Every operator above has been deposited into and withdrawn from with our own money, and the time recorded. See the method and the full test log.
Why the same Megaways game plays differently
Megaways is a licensed engine, not a studio. Big Time Gaming rents the mechanic to Pragmatic Play, Blueprint, Barcrest, Inspired, Red Tiger and dozens more, which is why the same reel behaviour turns up under so many different brands. What changes between a UK lobby and an offshore one is not the engine — it is the rules wrapped around it.
- Bonus buy is gone in the UK. Not available at UK-licensed sites since 2021. Offshore it typically costs 75–100× your stake to trigger the feature directly.
- The UK stake limit changes the maths. Online slots are capped at £5 a spin for players 25 and over and £2 for 18-24. A 117,649-way game is built around high variance; capping the stake does not lower the variance, it just lengthens the time you are exposed to it.
- Some studios ship reduced-RTP builds. Always open the paytable before you spin — see our RTP guide.
How Megaways actually works
Each of the six reels drops a variable number of symbols every spin — anywhere from two to seven. Ways to win are the reel heights multiplied together, so six reels showing seven symbols each gives 7×7×7×7×7×7, which is 117,649. That number is the maximum, not the norm; most spins land far below it.
Winning symbols are then removed and the ones above fall into the gap. Those cascades keep resolving until no new win forms, so a single spin can pay several times over.
The feature is where the format earns its reputation. On most Megaways titles the free spins round carries a multiplier that rises with every cascade and never resets until the round ends. That is the mechanic the max-win figures come from, and it is also why the base game feels flat by comparison — the maths puts the money in the feature. Our full Megaways explainer works through the reel maths, the paytable and the volatility in detail.
More ways is not better odds. 117,649 describes the shape of the grid, not the return. A Megaways slot and a ten-payline slot can hold exactly the same RTP — Starburst runs at 96.09% on ten lines and a 500× ceiling, which is the same return in a completely different shape. What the ways count does tell you is the volatility: more ways, smaller average win, bigger tail.
The Megaways titles UK players search for
British search demand for Megaways is unusually concentrated on British studios. Blueprint is based in Newark, Barcrest in Manchester and Inspired supplies the UK bookmaker and arcade estate — so Rainbow Riches, Fishin' Frenzy, Eye of Horus, Centurion and Cops N Robbers are Megaways builds of games players already knew from a betting shop cabinet. That familiarity is the whole reason these titles outrank the studio-native ones in the UK.
| Title | Studio | Advertised RTP | Ways to win |
|---|---|---|---|
| Bonanza Megaways | Big Time Gaming | 96.00% | 117,649 |
| Monopoly Megaways | Big Time Gaming | 96.5% | 117,649 |
| Buffalo King Megaways | Pragmatic Play | 96.52% | 200,704 |
| Gonzo's Quest Megaways | Red Tiger (NetEnt IP) | 96% | 117,649 |
| Fishin' Frenzy Megaways | Blueprint Gaming | 96.1% | 15,615 |
| Return of Kong Megaways | Blueprint Gaming | 96.03% | 117,649 |
| Eye of Horus Megaways | Blueprint Gaming | 95.49% | 15,625 |
| Centurion Megaways | Inspired Gaming | 95.9% | 117,649 |
| Cops N Robbers Megaways | Inspired Gaming | 95.5% | 117,649 |
| Rainbow Riches Megaways | Barcrest | 94.3% – 96.00% | 117,649 |
These are advertised figures — the studio's default build. An operator is free to run a different one, and offshore it is under no obligation to tell you which. The paytable inside the game is the only figure that describes the machine you are actually playing.
The same title, three different RTPs
Rainbow Riches Megaways is the clearest example in the whole format, and it is worth spelling out because it is not a rumour — it is visible on UK sites right now. Racing Post's slot page headlines it at 94.3% and then lists 96.00% in the game information further down the same page. Kong Casino, a UK-licensed operator, publishes 95.9%.
None of them is lying. Barcrest certifies the game in several builds and the operator chooses which one to load. The figure a review site prints is whichever build it happened to check, which is why three UK sources can disagree by more than a point and a half on one game.
UK-licensed sites must display the RTP of the build they are running. Offshore sites are under no such obligation — which does not mean they run low builds, only that you have to look rather than assume. It takes ten seconds: open the game, tap the information or paytable icon, scroll to the last screen.
What the spread costs. £2 a spin over 2,000 spins is £4,000 of turnover. At 94.3% the expected cost of that session is £228. At 96.00% it is £160. Same game, same session, £68 — decided by a build you were never shown. Our RTP cost calculator runs the numbers for any stake.
Not every Megaways slot has 117,649 ways
The headline number is treated as if it were part of the brand, but it depends entirely on how tall the reels are allowed to grow. Blueprint runs several of its titles on a shorter grid: Eye of Horus Megaways tops out at 15,625 ways and Fishin' Frenzy Megaways at 15,615 — six reels of up to five symbols rather than seven.
Pragmatic goes the other way. Buffalo King Megaways runs a wider grid and reaches 200,704 ways, well beyond the figure most players assume is the ceiling.
This matters for the reason the ways count always matters: it is a volatility signal. A 15,625-way Megaways pays smaller and more often than a 200,704-way one at the same RTP. Neither is better. They are different session shapes, and the UK stake limit makes the high-variance shape considerably harder to sit through.
What the 2021 UK rules changed for Megaways specifically
The Gambling Commission's 2020–2021 package applies to every online slot, but three of the four changes land harder on Megaways than on anything else in the lobby.
The UK stake limit
Online slots are capped at £5 a spin for players aged 25 and over and £2 for 18-24 — the limit that applies across every UK slot lobby. Megaways maths is built around a long, flat base game funding a rare, large feature. Capping the stake does not soften that curve — it just means you sit in the flat part for longer on the same bankroll. Offshore the cap does not apply, which is the single most-cited reason UK players go looking.
The end of the bonus buy
Feature buys were removed from the British market, and Megaways is the format where they were most used — buying past the base game is precisely what the format's shape invites. Offshore the buy is usually 75–100× stake. Whether that is good value is a separate question: a 100× buy has to return more than 100× on average to beat simply spinning, and it rarely does.
Autoplay and the 2.5-second spin
UK slots must take at least 2.5 seconds per spin and every spin must be started by hand. Megaways cascades already extend a spin well past that floor, so the rule stacks: a cascading win on a UK build can take several seconds longer than the same win offshore, where turbo and autoplay both remain.
How to check a Megaways slot before you spin
- Open the paytable and read the RTP off the final screen. This is the only figure that describes the build in front of you.
- Check the maximum ways. 15,625 and 200,704 are different games even at the same RTP.
- Check the max win multiplier, and treat it as a tail event rather than a target.
- If there is a feature buy, note the price in stakes. Below 100× is normal; well above it is the operator, not the studio.
- Confirm the site is one you can actually withdraw from. Every operator listed at the top of this page has been paid out of, with the time recorded — see how we test.
Frequently Asked Questions
How many Megaways titles are at non-GamStop sites?
Can I buy the bonus on a Megaways slot offshore?
Does more ways to win mean better odds?
Are Megaways slots legal in the UK?
Why does the UK stake limit matter more on Megaways?
Do all Megaways slots have 117,649 ways to win?
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