Millionaire Mystery Box Slot

Millionaire Mystery Box Slot
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Millionaire Mystery Box graces the lineup for Big Time Gaming’s late 2019 releases. The slot game is not entirely a new title online considering its predecessor was included in the Megaways franchise. Millionaire Mystery Box Slot is inspired by the same theme of the game show Who Wants to Be a Millionaire that has been on air since 1998. Gamblers get to experience the trademark stage up close with the game show logo plastered in the middle of the circular floor. The backdrop appearance is similar to the original release with blue lights lighting up the screen with touches of yellow here and there.

Who Wants to be a Millionaire Mystery Box Slot has some changes made to the playing grid which is shrunk to five reels stretched on three rows. This arrangement accommodates 243 ways to win instead of play lines. The grid is made sheer to leave most of the backdrop in view and leaving much of the glory to the icons that land on it. In this Millionaire Mystery Box Slot review, players find out more on how to win Millionaire Mystery Box, the values provided, and the bonus features that make it extra special.

Going for the Big Win in Millionaire Mystery RTP Slot

When gamblers play this slot, no new rules have to be learnt since it uses the same procedure as nearly every other online slot. The bet selection part, as stated in the game rules, is conducted using the Stake Button. The green keys in the field navigate through stake options of between 0.10 and 40 pounds. The funds are displayed in the form of pounds even in the free to play option. When spinning the Who Wants to be a Millionaire Mystery Box reels, gamblers can choose the manual play button or the faster option of Autoplay, which supports as many as one hundred rounds. The automatic spinning option can also be halted using single win and loss limits of up to 4000 pounds depending on the wager placed.

Depending on what lands on the screen when punters play Millionaire Mystery Box Slot, they can exploit several bonus features, including:

  • Wild: The Who Wants to be a Millionaire Mystery Box wild symbol is a two times multiplier that lands on the second, third, and fourth columns. All payouts the icon helps collect are multiplied by two. If more than one wild is used, the wins are doubled for each symbol.
  • Mystery Box: It wouldn’t be a slot based on a popular game if it didn’t incorporate a bonus round inspired by the TV show. The Mystery Box Feature plays this role, and it appears on the second to the fourth column as a character. Once landed, the box transforms into another symbol to improve the winning chances.
  • Gamble feature: Each time players collect a win in Who Wants to be a Millionaire Mystery Box, they can gamble the payout for double the amount or walk away with nothing. The gamble game can be played as many as five times.
  • Millionaire Scatter: The Millionaire symbol plays the scatter in Who Wants to be a Millionaire Mystery Box, and it can appear anywhere on the grid. The special symbol awards seven, twelve, or twenty free spins for landing three, four, or five of them. This Millionaire Mystery Box game symbol also drags along credit winnings of up to 200 credits.
  • Free spins: In the Who Wants to be a Millionaire Mystery Box free spins bonus, gamblers can scale up a multiplier ladder depending on how many scatters appear during the rounds. The bonus begins with a two-times multiplier, and it can climb up to 50 times. With each Millionaire Mystery Box free slot scatter, players are awarded an additional free spin except for the fourth, tenth, and twelve tiers that present three freebies.

Slot Payouts

Big Time Gaming’s Millionaire Mystery Box Slot pays still features regular icon winnings that are provided for matching three to five characters. These combination payouts are reviewed below:

Character Wins for Three For Four For Five
9 0.1 0.2 0.6
10 0.1 0.2 0.6
J 0.2 0.3 0.7
Q 0.2 0.3 0.7
K 0.3 0.4 1
A 0.3 0.4 1
Green gem 0.4 0.5 2
Blue gem 0.5 0.6 2.5
Red gem 0.6 0.8 3
Purple gem 1.5 2 25

The jackpot prize in Big Time Gaming’s Millionaire Mystery Box Slot is fixed and not progressive. The payouts are multiplied by the stake placed to determine the final value. Millionaire Mystery Box RTP is 96.64%, which is higher when compared to other BTG video slots.


Is Millionaire Mystery Box Slot available for free play?

As with all other Big Time Gaming slots, punters can play this one for free. The slot is developed with the same payouts, bonuses, and design as those seen when punters play Millionaire Mystery Box for real money. However, the winnings collected cannot be withdrawn and can only be used as bets. The free version is often used to gather tips on the game, but it cannot be used to apply cheats or any strategies since it runs on an RNG.

Does Millionaire Mystery Box feature a free spins bonus?

Yes, it does. The bonus round is activated by landing three Who Wants to be a Millionaire Mystery Box scatters. Between seven and twenty rounds are offered for three to five of these special symbols. The bonus is accompanied by payouts of up to 200 credits for the scatters.

Is Millionaire Mystery Box mobile version available?

The mobile slot version is provided for gamblers who prefer to indulge on the go. The option is no different from the desktop version aside from a slight change in the buttons’ layout to fit small screens. No download is necessary to access the version since it is created for instant play. No flash player installation is needed either.

Does Millionaire Mystery Box accommodate real money gameplay?

Yes, it does. Gamblers can only play Millionaire Mystery Box Slot for real money in Big Time Gaming casinos online after they open an account and deposit some cash. The bet limits used in the game are similar to those of the free version, and so are the payouts. When asking how to win in Millionaire Mystery Box, no skills can be applied, and the results are entirely random.


Millionaire Mystery Box slot machine online is an impressive release by Big Time Gaming that manages to capture the retroelement of the game show it is based on while remaining modern enough to attract an audience. The progressive multiplier bonus is a smart addition to the free spins bonus, which allows gamblers to collect a jackpot prize of up to 12000 times the placed stake.

Joel O’Brien
image Yes, you may find it weird that I am a writer, and yet I enjoy sports. I am a fan of cricket, board sports, horseback riding, and scuba diving! Cricket is a strenuous game, and I participate in events to help me keep fit. It requires some serious running, and it is a great way to improve hand-eye coordination. It comes natural to me to combine water activities. Since I am a scuba diver, I also take the time to do board sports. After seeing what is under the sea, it is best to glide on it, right? Scuba diving is what makes me think. It helps me reflect on life and the beauty of the world. Horseback riding and board sports, however, are my go-to activities if I am looking for action. They may not be serene, but they rock!

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