Play Millionaire Mystery Box at ICE36
Play Millionaire Mystery Box at ICE36

Millionaire Mystery Box

Play Millionaire Mystery Box at ICE36Play Millionaire Mystery Box at ICE36
Bet Range
Bet Range
£0.10 - £40
Produced by
Produced by
Big Time Gaming
free spins, gamble
Biggest Win
Biggest Win
Game Theme
Game Theme
2D/3D, Branded

Millionaire Mystery Box Game Review and Online Demo


Will the Millionaire Mystery Box help you win a big prize? Open it up to discover what it has in store for you today! 

Millionaire Mystery Box is a slick slot based on one of the most successful game shows of all time, and has plenty to recommend it. Keep reading to learn more about Millionaire Mystery Box, including its top cash prizes, X2 Wild, and Free Spins feature. 

How to Play Millionaire Mystery Box Slot Online

Millionaire Mystery Box is based on the hit game show Who Wants to Be a Millionaire? Big Time Gaming (BTG) has worked on this licence before — its Who Wants to Be a Millionaire? Megaways slot was released in 2018. And the BTG team has nailed the TV show’s aesthetic and atmosphere again in Millionaire Mystery Box. 

The famous studio set is the background scene, with the lights down low just like in the show’s most tense moments. That unmistakable music plays throughout, too, to help you feel as if you’re in the chair opposite Jeremy Clarkson (or Chris Tarrant, if you prefer). 

Millionaire Mystery Box is played on 5 reels, 3 rows, and 243 ways to win. Follow these steps to play:

  1. Sign into ICE36 and find Millionaire Mystery Box from our slots range. 
  2. Check the default stake and change it, if necessary. 
  3. Spin the reels and see if you can match symbols across three or more adjacent reels to win a cash prize. 
  4. Look out for X2 Wilds (that double cash prizes), Mystery Box symbols, and Scatters that trigger the Free Spins feature.

Game Controls

When you’re ready to get started, press the Spin button in the bottom-right corner to play Millionaire Mystery Box. Tap the arrow buttons in the Stake section of the control panel to increase or decrease your total bet. 

To open the game menu, press the blue menu button next to the Stake section. The game menu includes the Pays section (paytable) and Help (rules and general information). 

Meet the Symbols

The regular symbols in Millionaire Mystery Box include gemstones and royals. The gemstones award the high and medium prizes, while the royals award the low prizes. 

Other symbols include the X2 Wild, Mystery Box, and Scatter. Each of these performs a special function to help boost your winnings. 

Match five symbols on a payline to win the following cash prizes:
























Bonuses and Special Features

Millionaire Mystery Box includes the following bonuses and special features:

X2 Wild

The Wild symbol appears on reels 2, 3, and 4 only. It substitutes for every regular symbol except the Scatter. 

Any win created with a Wild symbol is doubled!

Scatter Symbol

The Scatter symbol pays out for two or more in any position. You’ll win 2x, 5x, 20x, or 200x your total bet for 2, 3, 4, or 5 anywhere on the reels, respectively!

Mystery Box

The Mystery Box symbol, featuring a question mark icon on a blue box, lands on reels 2, 3, and 4. It opens to reveal any regular symbol. 

Free Spins Feature

Land at least three Scatters to trigger the Free Spins feature. The number of free spins awarded is based on how many Scatters you match:

3 Scatters: 7 free spins
4 Scatters: 12 free spins
5 Scatters: 20 free spins

A Multiplier Ladder is in play during the Free Spins feature. The Multiplier Ladder has 12 rungs with a multiplier on each, from x2 to x50. 

Wins are multiplied by the multiplier highlighted, and each Scatter that lands moves you on to the next rung. 

Most rungs award an extra free spin, too, though rungs 4, 8, and 12 award 3 more instead. Any Scatter that lands while you’re at the top of the Multiplier Ladder awards an extra free spin. 

Gamble Feature

The Gamble feature is available on any win during the base game, and gives you an opportunity to double your prize! You can play through five rounds to keep increasing your winnings each time you trigger the feature. 

If you don’t want to gamble a prize, you can choose to continue the base game instead. 


Millionaire Mystery Box Game Reviews

Millionaire Mystery Box has received great ratings at casino game review sites, and is a must if you’re a fan of Who Wants to Be a Millionaire? Not only does it include fantastic bonuses to take your winnings higher and higher, but it captures the show’s unique style perfectly. The branded theme remains a popular choice these days and it is definitely well-applied in this game. Sons of Asgard, Slingo Reel King and Naked Gun are just some of the other titles that you can check out if you are into branded-themed slots. And with 243 paylines, this makes spinning these virtual reels a lot more exciting. Other interesting game titles that also have over 200 paylines include Legend of the Four Beasts and Medusas Eyes.


Game FAQ

Let’s answer the most frequently asked questions about Millionaire Mystery Box:

What is the maximum bet for Millionaire Mystery Box?

The maximum bet for Millionaire Mystery Box is 40.00 per spin.

What is the minimum bet for Millionaire Mystery Box?

The minimum bet for Millionaire Mystery Box is 0.10 per spin.

Can I play Millionaire Mystery Box on mobile?

Yes, you can play Millionaire Mystery Box on mobile.

What is the RTP of Millionaire Mystery Box?

Millionaire Mystery Box has an RTP of 96.64% and has a high volatility. If you’re the kind of player that prefers slots with this level of volatility, then there are plenty of titles to choose from such as Vlads Castle, Beez Kneez and Heartburst.

What is the biggest potential win for Millionaire Mystery Box?

The biggest potential win for Millionaire Mystery Box is 22,000x your total bet.

Play Millionaire Mystery Box Slot at ICE36 Casino

Millionaire Mystery Box is a brilliant adaptation of the long-running TV game show Who Wants to Be a Millionaire? It boasts awesome visuals, authentic music, a generous top prize, and outstanding bonuses. 

Ready to take BTG’s slot for a spin? Sign in to play Millionaire Mystery Box at ICE36 now!

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V: 3.14.0 All rights reserved. August 2021