Millionaire Mystery Box

Developed by Big Time Gaming, Millionaire Mystery Box is a 5-reel slot offering a top potential prize worth up to 14,550x your wager!

Millionaire Mystery Box Slot Game Overview

This game is based on the original hit slot, Millionaire, by the same UK slot games provider. They're both inspired by the popular TV game show, Who Wants to be a Millionaire.

This slot game comes with sleek graphics and visuals. The image in the slot's background is what the TV game show hall looks like. Its accompanying soundtrack and sound effects are also taken from the game show.

The slot has a 5x3 grid with 243 winning ways. Its bet sizes range from £0.10 up to £5 a spin at Wizard Slots casino.

Winning combinations can be formed if 3+ identical symbols land on consecutive reels, starting from the leftmost reel. However, the purple gem can award potential wins for just 2 matching symbols in a spin,

The symbols in Millionaire Mystery Box are quite simple. For example, there are the usual card royals A, K, Q, J, 10, and 9. The purple A can award wins worth 0.3x, 0.4x and up to 1x your bet if you land 3, 4 or 5-of-a-kind.

Gems of purple, red, blue, and green represent high-value icons. Purple gems can win you 1x, 1.5x, 2x and up to 25x if 2, 3, 4, or 5 identical symbols in the same spin.

The “Who Wants to Be a Millionaire” logo represents the scatter in this slot. It is also the highest-paying symbol, and can award prizes for landing 2 - 5 of them on the reels. If you land 5-of-a-kind, it can win you up to 200x! Additionally, scatters can pay any way.

There is a x2 wild symbol, which can only appear on reels 2 - 4. It can replace all other symbols except for the scatters. As this is a x2 wild, if it forms part of a winning combination, it can double the payout!

A mystery box symbol can also appear on reels 2 - 4, and it can open to reveal another symbol.

The Millionaire Mystery Box slot is available to play here at Wizard Slots casino, the best online casino in the UK!

How to Play Millionaire Mystery Box

Launch the Millionaire Mystery Box slot.
Set your preferred stake.
Click the Spin button to play.

Mystery Box Feature

A Mystery Box may randomly appear on reels 2, 3, and 4. If 2+ Mystery Boxes land in the same spin, they can all transform into the same symbol.

Gamble Feature

After landing a winning combo, you can choose to Gamble your winnings for the chance to double them!

Making this choice may either double your possible payout or wipe off everything. You may choose to Gamble for double or nothing up to 5 times with any win.

Extra Spins Feature

Landing 3, 4, or 5 scatters triggers 7, 12, or up to 20 extra spins. Then, you will be taken to a screen that has a Multiplier Ladder with 12 rungs.

Any wins can be multiplied by the highlighted multiplier on the ladder, and any scatters that land increases the Multiplier Ladder by 1.

Every rung can win you more spins. However, rungs 4, 8 and 12 can award 3 extra spins, and any scatter on rung 12 can award 1 extra spin.

Millionaire Mystery Box RTP

Return To Player (RTP): 96.64%

The RTP is a theoretical value and is shown as a percentage. It’s used to describe the percentage of money wagered a particular casino game may pay back to players over a certain period of time.

For example, if a game had a RTP of 92%, in theory, this would mean that for every £100 wagered, the game could return £92 back to players in potential winnings. However, it is important to note that winnings are completely random, and players are not guaranteed to receive this.

*All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.