Play Big Time Gaming’s Millionaire Mystery Box slot game at LeoVegas or 32Red

Big Time Gaming has today released their 2nd Who Wants to be a Millionaire slot game – Millionaire Mystery Box. It offers 12,000 x bet payouts.

Millionaire Mystery Box slot overview

The Millionaire Mystery Box slot game follows on from the Who Wants to be a Millionaire (Megaways) title released by BTG – with 5 reels and 243 ways to win, you can spin away from just 20p a spin on desktop, mobile and tablet devices.

Reminiscent of the infamous TV gameshow, it comes with 2x multiplier wilds on the 3 central reels – if you get more than 1 on the same spin, the multipliers are combined. There’s also a randomly activated Mystery Box feature where the Mystery Box symbols change into a randomly chosen matching symbol for bigger wins. Like the gameshow, you can gamble your payout to double your win.

Millionaire Mystery Box also has a Free Spins feature where you’re rewarded with 7 free spins – like the show, work your way up the bonus ladder to win additional free spins and increase the multiplier. You can play with up to 24 free spins with a whopping 50x multiplier.

This can lead to 12,000 x bet payouts on every free spin – for full details, head to the Millionaire Mystery Box slot review to try for free.

Play at 32Red Casino

You can play Millionaire Mystery Box at many reputable UK casinos – we recommend the long-standing 32Red Casino that has been around since 2002! With slots from Microgaming, Big Time Gaming, Blueprint Gaming, WMS and NetEnt (amongst others), they are a solid and trusted choice if you’re a UK player:

  • Excellent & award-winning customer support
  • Fast cashouts with no fees – use PayPal too
  • Exclusive I’m a Celebrity Get Me Out of Here slot from Microgaming

Sign up to get a £10 no deposit bonus – then there’s a 150% bonus up to £150 on your first deposit (i.e. deposit £100 to get the maximum £150 bonus).

Begin with a £10 no deposit bonus at 32Red

Terms and Conditions apply. 18+,

Play at LeoVegas Casino

The 2nd online casino we recommend is LeoVegas Casino – with over 1,600 slot games to play, they also offer 24/7 customer service, withdrawals within hours, lots of banking options and regular promotions. They also release plenty of slots exclusively early like Yggdrasil Gaming’s Avatars: Gateway Guardians.

You can get something for nothing when you register – sign up to get 20 Rich Wilde and the Book of Dead free spins with no deposit needed. Then you’ll get a 100% bonus up to £100 plus up to 25 bonus spins on your first 4 deposits totaling £400 in bonuses and 100 bonus spins.

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Terms and Conditions apply. 18+,