Name	Who Wants to Be a Millionaire Mystery Box	Bet Values	0.1 – 40
Provider	Big Time Gaming	RTP	96.64%
Theme	Gameshow	Volatility	Medium
Type	Video Slot	Free Spins	Yes
Number of Reels	5	Wild	Yes
Number of Rows	3	Scatter	Yes
Win Ways	243

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Who Wants to Be a Millionaire Mystery Box Slot Review

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Who Wants to Be a Millionaire Mystery Box is an online slot developed by Big Time Gaming and inspired by the classic TV game show with the same name. It's the provider's second slot to be themed after the gameshow, following the Who Wants to Be a Millionaire Megaways slot that came out in 2018.

The theming of the Who Wants to Be a Millionaire Mystery Box slot machine is very well done. It's designed to resemble the gameshow and does an excellent job of making you feel as if you're in the hot seat as a contestant yourself. The penny slot is played on a standard gaming grid with three rows and five reels.

How to Play the Game

Who Wants to Be a Millionaire Mystery Box free slots game is quite easy to play. Once you've loaded the slot, decide how much money you want to bet with.

Choose your stakes. To the left of the reels, you'll see the 'STAKE' box with the current bet value displayed beneath. Use the green arrows to decrease and increase the current value to the one you want. There are quite a few options available, and they range from 0.10 to 40.
Start the game. Once you've got your bet amount set, click on the large green button with a white triangle in it to spin the reels.
Consider autoplay option. There is a button with two white arrows on it. Click this, and you'll be taken to the autoplay menu. Autoplay is a special feature where the slot spins the reels automatically for you. Who Wants to Be a Millionaire Mystery Box casino slot machines autoplay feature lets you choose the number of spins you want the slot to make for you (5, 10, 25, 50 or 100) and has two limits.
For Loss Limit, the spins will stop once you've lost a set amount of money. The options are 20, 40, 60, 80 or No Limit.
For Single Win Limit, the spins stop once you win over a set amount of money. For this, the options are 200, 1,000, 2,000, 10,000 or No Limit.

Bonus Features

The slot has a rainbow-coloured wild that can appear on reels 2, 3 and 4. This wild substitutes for all of the standard symbols and act as a bonus to help you form winning combinations. Whenever the wild helps you win, it doubles the value of your winnings. If you happen to form a winning combination with more than one wild, the multipliers are stacked together. If there are two wilds, your wins are multiplied by 4x, for example, and if there are three, your wins are multiplied by 8x.

One of the main features is Mystery Box. On any random spin, Mystery Boxes can land on reels 2, 3 and 4. These boxes open to reveal the same matching symbol – it can be any of the slot's standard symbols, or it can even be the wild or the scatter.

Speaking of the scatter, it's linked with the free spins round. It appears as the Who Wants to Be a Millionaire Mystery Box free slot machine logo and rewards both payouts and free spins.

As soon I put my money in, the machine seems to change and starts to pay with some credits. — Gerry L.ANSWER: More and more casinos are rewarding slot players with free play, giving them a chance to win without having to drop a dime into a machine. Slot machines longer you play.

Two Scatters: 2x payout
Three Scatters: 5x payout and seven free spins
Four Scatters: 20x payout and 12 free spins
Five Scatters: 200x payout and 20 free spins

When you trigger the free spins round, a ladder with 12 rungs on it appears to the left of the reels. You start off at the bottom rung, which gives you a 2x multiplier. While free spins are in play, ever scatter that appears on the reels moves you up one rung. Each rung after the first gives you a number of extra free spins and increases the value of the multiplier, as seen below:

First Rung: 2x multiplier
Second Rung: 3x multiplier and one free spin
Third Rung: 4x multiplier and one free spin
Fourth Rung: 5x multiplier and three free spins
Fifth Rung: 6x multiplier and one free spin
Sixth Rung: 7x multiplier and one free spin
Seventh Rung: 8x multiplier and one free spin
Eighth Rung: 10x multiplier and three free spins
Ninth Rung: 12x multiplier and one free spin
Tenth Rung: 15x multiplier and one free spin
Eleventh Rung: 30x multiplier and one free spin
Twelfth Rung: 50x multiplier and three free spins

Once you've hit the twelfth rung, whenever you land any additional scatters you'll get one extra free spin per scatter.

How to Win the Game

The Who Wants to Be a Millionaire Mystery Box slot doesn't have set paylines that you need to form winning combinations on to receive payouts. Instead, the slot uses the all-ways-win system. This does away with paylines and lets you win if you land three or more matching symbols on consecutive reels starting with the leftmost one. It doesn't matter what positions the symbols are in, so long as there is one on the first three reels.

There are 10 standard symbols that you can win with when playing the Who Wants to Be a Millionaire Mystery Box slot game.

Low-paying symbols – The six low-paying symbols are card ranks, each one of which is a different colour. The least valuable are the turquoise 9 and the yellow 10; the green J and blue Q both offer the same higher payouts, while the red K and purple A both offer even higher payouts.
High-paying symbols – As for the high-paying symbols, these are four gemstones. There's a green pentagon, a blue hexagon, a red octagon and a purple one in the shape of a circle. The most valuable standard symbol is the purple gemstone. Should you land one of these on each of the five reels, you'll be paid a sum equivalent to 25x your bet. This symbol is the only one to offer payouts for two on consecutive reels (all of the other symbols payout for three or more only). Land one purple gemstone on the leftmost reel and another on the reel next to it for a payout equal to your current bet.

Whenever you win, you'll have the chance to gamble your winnings. A 'GAMBLE' will appear following every win. Give this a click, and you'll

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