Millionaire Megaways slot review

What is the Millionaire Megaways slot?

Millionaire Megaways is a licensed quiz-show slot from Big Time Gaming, the Australian studio that created the Megaways mechanic. It was released in 2018 and borrows the show's question ladder for its bonus round.

Under the theme it is a classic Big Time Gaming design: six reels whose heights change every spin, an extra reel that adds symbols, cascading wins and a free spins multiplier that keeps climbing. The published RTP is 96.27%, which is close to the typical figure for modern online slots, and volatility is medium–high.

It suits players who enjoy a decision point in the bonus and do not mind long gaps between features. If you prefer steady small returns, a lower-variance game from our mobile slot reviews will be kinder to a small budget.

Millionaire Megaways RTP, max win and specifications

The 117,649 figure is plain arithmetic: six reels each showing seven symbols gives 7 × 7 × 7 × 7 × 7 × 7 = 117,649 ways. Most spins land fewer, because each reel's height is random. Our Megaways glossary entry explains how the count is worked out.

How the features work in Millionaire Megaways

Reactions: cascading wins

Big Time Gaming calls its cascades Reactions. When a spin produces a win, the winning symbols are removed and new ones drop into the gaps. If the new symbols form another win, the process repeats, so one paid spin can produce a chain of wins.

The Extra Reel and question mark wild

Alongside the six main reels there is an Extra Reel, which adds more symbols to the grid. A question mark wild can land on this Extra Reel and substitute for other symbols to help complete ways wins.

Free spins and the Hot Seat

Three or more Millionaire scatter symbols award 8 free spins. At that point you choose: accept the 8 spins, or gamble them on the Hot Seat, a quiz-style ladder that can award more spins. You can use lifelines such as 50:50 along the way, echoing the TV show.

Gambling puts the 8 spins at risk in exchange for a chance of a longer round. It is a choice about how swingy you want the bonus to be, not a way to improve the odds.

A multiplier with no ceiling

During the free spins a win multiplier starts at 1x and rises by one with every win. There is no upper limit on it, which is what makes the long rounds so valuable when they happen and why the maximum win reaches 72,310x.

Should you gamble the free spins? The Hot Seat in plain numbers

Players often ask whether taking the Hot Seat is the smart play. The honest answer is that there is no strategic edge either way. The published 96.27% RTP is the long-run figure for the game as a whole, and the in-game rules are the place to see how the Hot Seat is described in your version.

What does change is variance. Keeping 8 spins gives a moderate, predictable-length round. Gambling them creates two very different outcomes: a longer round where the uncapped multiplier has time to climb, or a lost round with nothing paid.

Gamble features are not banned in the UK. The Gambling Commission's stake limit guidance even describes a player rejecting a prize for a chance at a larger one within the same game cycle, without staking more. Whether a particular casino's version shows the Hot Seat option is set out in the game's rules screen.

What Millionaire Megaways costs per spin and per hour

A 96.27% RTP means 3.73% of everything you stake is the expected cost over the long run. The formula is stake × number of spins × 3.73%.

With medium–high volatility, the expected loss is only half the story. Many sessions will lose more than the average because the bonus did not arrive; a few will lose less or finish ahead because it did. At £1 a spin, £20 may last only a handful of minutes, which is too short to expect a feature.

The maximum win column is a ceiling, not a target. Reaching 72,310x needs an extraordinary free spins round, and almost no player will ever see it. Wizard of Odds on slots (opens in a new tab) is a useful explainer on why big top prizes are paid for by many smaller losses.

How to play Millionaire Megaways in a UK casino app

Millionaire Megaways is a game inside the casino app, not a separate download. These steps apply to any UK-licensed app that lists Big Time Gaming titles.

1. Install a UK-licensed casino app from the App Store or Google Play, and complete age and identity checks.
2. Set a deposit limit when the app prompts you, before your first deposit.
3. Search the game lobby for Millionaire Megaways; if it is not listed, that app does not carry it.
4. Open the game's help screen to confirm the RTP and read the Hot Seat rules.
5. Choose a stake you could afford to lose in full, within the £5 (or £2 if aged 18–24) cap.
6. Tap to spin each time; autoplay is not available on UK slots.

Big Time Gaming slots are built for browsers, so they run on iPhone, iPad and Android. Megaways grids pack a lot of symbols into a small space, so a larger phone or a tablet such as an iPad makes the Extra Reel easier to read. If you are new to installing apps, see our guide to downloading a casino app on iPhone.

UK rules that shape Millionaire Megaways

Every online slot in Great Britain has to follow the Gambling Commission's responsible product design standards (opens in a new tab). Since 31 October 2021 that has meant no autoplay, a minimum of 2.5 seconds per spin, no turbo or slam-stop, and no celebrating a return that is equal to or lower than your stake.

Since 17 January 2025 you also cannot play several games at once, and your net spend and time played must be shown as you go. Stakes are capped at £5 per spin for players aged 25 and over and £2 for those aged 18 to 24, as set out in our page on slot stake limits.

Feature buys are another difference: since a Gambling Commission warning in January 2020, feature buy-ins are not offered to British players. You can only reach the Hot Seat by landing the scatters. See our wider page on UK game design rules.

Big Time Gaming, the studio behind Millionaire Megaways

Big Time Gaming was founded in Sydney, Australia, in 2011 and is led by chief executive Nik Robinson. It created the Megaways mechanic, in which each reel shows a random number of symbols per spin, and later licensed it to other studios; Blueprint Gaming's licence was announced in May 2018, as CasinoBeats reported (opens in a new tab).

Evolution announced a deal to buy the studio in April 2021, making it a sister company of NetEnt and Red Tiger. Its other well-known games include Bonanza Megaways and Extra Chilli Megaways.

Megaways slots like Millionaire Megaways

Monopoly Megaways is the closest match, another TV-and-board-game licence from the same studio. White Rabbit Megaways has a higher published RTP. For apps with a wide Megaways range, see our best Megaways slot apps.

Playing a high-variance quiz slot responsibly

The Hot Seat is designed to be exciting, and that is exactly when it is easiest to lose track. Decide in advance whether you will gamble the spins, so the choice is not made in the heat of the moment.

• Use your app's deposit limit and a reality check to keep time and money in view.
• Never chase a lost Hot Seat by raising your stake on the next spins.
• If you feel you need to win back losses, stop and talk to the National Gambling Helpline on 0808 8020 133, run by GamCare, free and open 24/7.

Casino apps for Millionaire Megaways and other Megaways games

We cannot confirm which partner app lists Millionaire Megaways, so check each game lobby before depositing. Coral's App Store listing does mention MEGAWAYS slots among its games. The offers below are not usable on this slot and all require you to be 18+, with terms applying.

At PlayOJO, new UK customers outside Northern Ireland who make a first deposit of at least £10 receive 80 spins on Big Bass Bonanza worth 10p each, with no wagering, so winnings are paid as cash. You must use the designated offer link, and it cannot be combined with other offers.

At Coral, new players who deposit and bet £10 or more on slots get 100 free spins at 10p on selected games, to accept within 48 hours and use within 7 days; free spin winnings carry no wagering. It runs from 1 October 2026 to 1 February 2027, and Neteller, PayPal, Paysafe, Skrill, prepaid card and certain debit card deposits are excluded.

At Ladbrokes, new customers who deposit and spend £10 or more on slots receive 50 free spins daily for their first 10 days (500 maximum), 10p each on selected games, which must be claimed before 23:59 each day and used within 7 days; there is no wagering. Prepaid card, PayPal, Paysafe, Neteller, Skrill and Moneybookers deposits do not count. Coral and Ladbrokes share an operator, LC International Limited.

18+. Every casino game has a built-in house edge, so over time you should expect to lose what you stake. Set a budget before you play and stop when it’s gone: safer gambling tools and support. Free, confidential help: National Gambling Helpline 0808 8020 133.