Free slot: Millionaire Mystery Box

How Millionaire Mystery Box works

Who wants to make millions? The flagship show from the childhood of many of us is also available in the world of online casino. Created in 2019 by provider Big Time Gaming, this slot can pay up to 12,000 times your starting bet. Although the potential payout of this slot is still substantial, it is considered to be a slot with average volatility. With an RTP of 96.3%, this slot is considered to be a slot with average volatility.

Millionaire Mystery Box has 3 horizontal lines for 5 vertical lines. It also has a bonus system at your disposal.

The mystery box function can be activated during your paid games. This will cause blue boxes with a question mark in the middle to appear on your starting grid. This function will reveal one of the symbols available on this slot machine..

If luck is on your side, you will be able to get the bonus function.

The different symbols of the Millionaire Mystery Box

Millionaire Mystery Box is a slot machine that consists of 11 symbols. First you have four premium symbols. These are the ones that can pay you drastically, including the purple diamond.

You then have six non-premium symbols. As you can see in the following screen, these symbols pay much less than the ones we have seen before.

Finally, you have the symbol "wild" x2. This can only appear on rolls 2, 3 and 4. Its function is simple: it replaces all symbols except the scatter symbol. All winnings that include a wild x2 are multiplied by 2. Wild x2's can accumulate and make you win a very substantial amount. This symbol is available in paid games as well as in your free games.

The different connections in Millionaire Mystery Box

Created by Big Time Gaming, this slot machine uses the Megaways system to connect symbols. If you don't know how this system works, Lucky7Bonus explains it in the following article.

Depending on the symbol, it must appear at least on rolls 1, 2 or even 3 to connect. Connections are made adjacent to each other and only from left to right.

How the Millionaire Mystery Box bonus works

Millionaire Mystery Box is a slot machine with a bonus round. In order to get free spins, the "Millionaire" symbol must appear at least three times on a single spin.

If it appears three times you get 7 free spins, if it appears 4 times you get 12 and if it appears 5 times you get 20 more free spins.

The bonus is very simple to understand: it works just like the paid games. However, each time a "millionaire" symbol appears on your screen, the final multiplier will increase until it reaches x50. As you can see in the following screen, each time this symbol appears, it gives you free spins and increases your multiplier.

Our opinion on Millionaire Mystery Box

Millionaire Mystery Box fully respects the theme of "Who wants to make millions". Whether it's the slot machine's decor or the musical atmosphere, you'll be completely immersed in childhood with this slot.

Moreover, the final potential gain is very interesting even if the slot is only rarely volatile. Paying games can pay you, but the bonus function is the one that has the best chance of winning you the jackpot.

So if you love culture, want to go back to your childhood and hope to hit the jackpot, then this is the right slot machine for you.