Game description

Who Wants to Be a Millionaire Mystery Box Slot (Big Time Gaming)

Who Wants to Be a Millionaire Mystery Box SlotBig Time Gaming has developed a new slot game named, Millionaire Mystery Box. This is a branded game that is based on the popular TV show, is a slot with a theme that’s based on a popular TV, “Who Wants to Be a Millionaire”

Millionaire Mystery Box has 5x3 reels, and a whopping 243 ways to win. With the huge number of ways to win, the slot had the potential to pay up to 12,000x total stake.

The slot has Medium volatility which is what caught my interest. Here is my experience with this slot:

Betting and Prizes

The slot’s wagers still from as low as $0.20 per spin. However, if you are a heavy punter, then you can spend the maximum which is $100 per spin.

The base game does not offer much in terms of individual winning combos, but the free spins come in handy. If you collect enough scatters, you can get up to 50xs in multipliers. This in return will give you 12,000 x total stakes, per single spin.

Millionaire Mystery Box Slot Features

There are several features on this slot and one is the wild symbol. With it, you get 2x multipliers each time it forms a new winning combination. To boost your wins, you need several wilds that multiply to increase the value.

Millionaire Mystery Box is more of a random bonus game. It delivers symbols randomly and these include both scatters and wilds.

However, I enjoyed the free spins more. And talking of the free spins, these are triggered if you get 3+ game logos. With the slot’s scatters, you are started off with 7 free spins.

Additional scatters come with more free spins and each new scatter awards you 1 or 3 additional free spins, in addition to boosting your multiplier.

If you manage 11 scatter symbols, you will be awarded 17 free spins. This is however for a maximum of 24 rounds, and at this point, you have the potential to reach the highest multiplier (50 xs).

Theme & Design

Considering the popularity of the TV show from where Big Time Gaming has drawn inspiration for this slot, you can only expect top-notch graphics and the game has done just fine.

However, I still came across the boring Royals there. Other symbols are four gemstones, the wild mystery box as well as the game logo which is also used as the scatter.


Millionaire Mystery Box is so much fun to play. The excellent RTP plus the high payout potential makes it a choice for gamers of all levels since the slot is also medium in volatility.

However, if you are looking for flashy and beautiful design and graphics, you will not find it on this slot.

However, the big to pay-outs makes up for its dull choice of design.

UPDATED ON: by Shawna Dudley