Millionaire Rush Slot Review

Expert Rating: 4.5 out of 5
Review by Chris Taylor
Last update 6th May 2022
Review by Chris Taylor
Last update 6th May 2022

With a new take on the classic TV gameshow, the Millionaire Rush slot by Big Time Gaming uses the Megaclusters mechanics. Wins/reactions give you continuous wins and moves you up a rung on the Megatrail. The Megatrail feature has 12 potential awards and cash prizes which changed randomly on each spin. Trigger the Free Spins feature for even more awards and double cash prizes. Offering a 96.44% RTP rate and 55,060 x stake max wins, go into overdrive with the Millionaire Rush review.


Millionaire Rush Max Win
55,060 x bet
Big Time Gaming
Type of Slot
TV Gameshow
Stakes Range
20p to £20
Bonus Features
Yes (3)
Free Spins/Multiplier
Max Win
55,060 x
Very High

Millionaire Rush Slot RTP, Details & Wager Limits

Reels/Paylines: 5×5-10×10 + Megaclusters

Stakes Range: 20p to £15 per spin

Max Win: 31,430 x stake

RTP: 96.53%

The Millionaire Rush slot uses the Megaclusters mechanic which was invented by Big Time Gaming. Beginning on a 5×5 grid, wins are formed by landing a cluster of 5 or more identical symbols. The grid can grow to be 10×10 in size meaning 100 symbol clusters are possible. The bigger the cluster, the greater the reward. This makes this game of the biggest grid slots.

Playable from 20p to £20 per spin, look out for the ‘Stake’ box. This appears to the right of the reels on laptops and PCs or at the bottom on mobile or tablet devices. There are arrows which can you use to adjust your bet to whatever suits your pocket. Not available to UK players, there’s an Autoplay function for autospins with limits if you desire.

The Millionaire Rush RTP is 96.44% which is much higher than other slot games (the norm is around 96%). However, this return rate is quite common for a Big Time Gaming slot game. The volatility is also very high and expected from the provider.

When it comes to max wins, you can win up to 33,050 x your total stake on each base game spin. In the free spins, the maximum payout is 55,060 x your total stake. This is due to the enhanced Megatrail which can give you prizes up to 2,000 x stake.

Theme – BTG’s renowned favourite takes into overdrive

Theme: TV Gameshow

High Value Symbol: Purple Gemstone

Compatibility: Mobile, Tablet, Desktop


With a TV gameshow theme, the Millionaire Rush slot is an official game for the Who Wants to be a Millionaire gameshow and the 4th from Big Time Gaming. Set in the studio, it uses the official soundtrack. It doesn’t, however, include Jeremy Clarkson or Chris Tarrant.

Beginning on a 5×5 grid, you will see the MEGATRAIL to the left of the grid. Symbols on the grid include yellow, teal, red, purple, orange, green and blue gemstones. The purple gemstone is the highest paying symbol with 25 or more awarding 50 x your total stake.

This is also a multi-coloured W wild symbol that substitutes for all paying symbols. This is no traditional scatter or bonus symbol as the free spins is awarded from the Megatrail (more details below).

Millionaire Rush Mobile


With Big Time Gaming creating all their slots with HTML5 technology, Millionaire Rush is available to play on mobile, tablet, laptop and/or PC devices. For use with iOS, Android and Windows operating systems, the game is responsive to any height and width setting. Best played using a 16:9 ratio window, the best visual experience will occur on a desktop device (PC or laptop).

Millionaire Rush Bonus Features

With 3 bonus features, the Millionaire Rush slot comes with Reactions which gives you successive wins. Each win sees you move up the Megatrail which can award 12 different awards as well as bonus prizes up to 1,000 x stake. Win 7 times in a row to play the Free Spins feature where more awards and double bonus prizes are up for grabs.

Reactions feature

As with many BTG slots, there is a Reactions feature which is triggered when land a winning cluster. Reactions/wins divide to make new symbols. This increases the size of the grid and the number of symbols that can appear. You also get another chance to form a winning cluster. At most, you can play on a 10×10 grid with 100 symbols. The ‘reactions’ will continue as long as you keep winning.

Megatrail feature


Each win brings the Megatrail feature into play. The Megatrail has 12 rungs with randomly determined awards. With the first rungs always being empty, this changes, randomly, on every base game spin. At least 3 random bonuses are added to the Megatrail on each base game spin. Each win/reaction moves you up the Megatrail with 12 possible awards:

1 Wilds Up to 10 wilds are randomly added to the grid
2 Multiplier Wilds Wilds with multipliers up to 5x are added to the grid
3 Symbol Explosions Instances of the displayed symbol will remove all symbols on its row/column
4 Symbol Subdivide Big instances of the displayed symbol turns into 4 smaller symbols of same type
5 Symbol Upgrade Instances of displayed symbol upgrades to symbol indicated
6 Symbol to Wild Instances of displayed symbol transforms to become a wild
7 Mega Wild A grid of 4 wilds are added to the grid with 2 grids added in free spins
8 Win Multiplier Multiplier for entire spin increases by up to 10x
9 Explosions Up to 3 explosions, in shape indicated, will removed symbols from the grid
10 Symbol Duplication 5 big instances of displayed symbol will be added on a row/column on grid
11 50:50 All symbols on top, bottom, left or right half of grid will be removed
12 Max Megaclusters All big symbols are replaced by 4 smaller symbols

Finally, there’s a bonus prize on the last/12th rung. This is won by winning 12 times in a row. This prize is worth up to 1,000 x your total stake in the base game.

Free Spins feature


Each win/reaction moves you up a rung on the Megatrail. If you reach rung 7, you will trigger the Free Spins feature. With 6 free spins awarded, the bonus prizes doubles up to 2,000 x your total stake.

If you reach rung 7 during the feature, 3 additional free spins will be won. The maximum number of free spins is 99 in total. With at least 6 random extras added the Megatrail on every free spin, it’s much more lucrative than in the base game.

Millionaire Rush Summary – Megaclusters on a whole new level

Theme & Symbols

Sounds & Music

Bonus Features

RTP (96.44%)

Max Win (55,060 x)


The Millionaire Rush slot may look like the other Who Wants to be a Millionaire themed slots but its distinctly unique. Fast paced with pure energy, this game takes the Megaclusters mechanic to a different level. Whilst the Megaclusters engine has been seen a few times already, it works perfectly with the random awards that keeps you on your toes.

With the awards determined randomly on each spin, I found the Multiplier Wilds and Win Multiplier awards to be the most lucrative. However, increasing the grid size to 10×10 in size gave me the best results, especially when combined with the above awards.

The Free Spins feature offers pretty much the same as the base game but with bigger bonus prizes and more extras on the Megatrail. Max wins of 55,060 x stake per free spin is high, even by Big Time Gaming’s high standards. Cyberslot Megaclusters and Star Clusters Megaclusters both offer 23,960 x stake max wins which is nearly half of that on offer in Millionaire Rush.

If you like the television gameshow, Who Wants to be Millionaire Megaways who the first in the series and offers 72,310 x stake top wins.

My recommendation would be Who Wants to be a Millionaire Megapays which is the jackpot version. With the same max win possible, you can also win 4 progressive jackpots. The Mega Jackpot is worth at least €300,000.

  • 55,060 x bet max wins
  • Highest max win of any Megaclusters slot
  • Potential for 10x10 grid in play
  • Highly volatile

Millionaire Rush FAQs

What is the Millionaire Rush RTP?

The Millionaire Rush RTP rate is 96.44% which is well above the 96% average. The variance is sky high with the big wins available in both the base game and Free Spins feature.

What is the Millionaire Rush max win?

The maximum win is 55,060 x your total stake. This can be won in the Free Spins feature. You can also win big in the base game with 33,050 x stake max wins.

Are there any Millionaire Rush free spins?

Yes, the Free Spins feature can give you up to 99 free spins. With at least 6 awards in the Megatrail available on each free spin, the bonus prizes appear more often up to 2,000 x stake.

Is there a Millionaire Rush demo?

Yes, the Millionaire Rush free play demo can be played here at Relive the classic TV gameshow on your mobile, tablet, laptop and/or PC devices.