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Bolt X UP slot

Isn't it great when even a basic game has the potential of winning a big prize? Bolt X UP gives you a chance to hit big even outside the bonus round. It has a cumulative "X UP" multiplier, expanding wilds, bonus free spins, and other exciting features. The highest winning odds are up to 10,000x the bet, which is a large win. Are you ready to learn more info about this slot from Microgaming released in collaboration with Alchemy Gaming on 26/05/2022? If so, then read our detailed review of the game!

Bolt X UP Free Play

Bolt X UP logo
Games Global Release Date: 26.05.2022
Rating by Joe Booth
User’s Rating:
Bolt X UP
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Are you trying to find an online casino to play the Bolt X UP online slot? You can stop your searches right now! Our system picked the best casinos with Bolt X UP in their lobby. As we checked every recommended brand from the list, you can trust all casinos there are licensed and trustworthy.

To start playing for real money, you need to sign up and make a deposit in an online casino. Then just find the Bolt X Up online slot in the lobby, and launch it. We can recommend you make your game more beneficial by claiming bonuses in casinos.

General information about Bolt X UP slot

Release Date:
Max. win:
Bonus game:
Free spins:
Scatter Symbol:
Wild symbol:
Symbol Stacked:
Jackpot Game:
Slot lines:
Slot reels:
Stakes range (€/£/$):
0.1 to 20
Slot Theme:

How to Play

Start your journey with the Bolt X UP slot by following our small guide:

  1. Launch the game
  2. Click on a starting screen to continue
  3. Set the bet size between €0.1 and €20
  4. Make adjustments to settings
  5. Start spinning!

Bolt X UP is the third title of the "X UP" mechanics from the provider. A spinner has a static 5x3 layout with 243 ways to win. The special feature of this game is an X UP, which is a cumulative multiplier. X UP meter grows whenever at least 2 scatters land on the reels. Another thing to watch in the slot is expanding wilds, which can occur randomly during regular spins.

Three or more scatters on the reels launch the bonus round with a current multiplier on an X UP meter. The slot also has a Bonus Buy option.

Bolt X UP RTP and Volatility


Bolt X UP offers an RTP of 96.22% being a game of medium volatility.

The return to player at 96.22% is decent, if not good. More important is that the slot has complex gameplay with its cumulative multiplier for a bonus game. We recommend playing this game for longer sessions to reach the bigger expected value. The base game includes expanding wilds, so it's almost impossible to catch a long run of dead spins. At the same time, big wins like 100x per overall bet are not that often either.


Bolt X UP

The central theme of the slot is electricity, and you can see and hear it playing the game. It's a 3D title with some "electric" effects like charging or lightning. The game is quite dynamic, even if there is no action in the background. Every winning combination is surrounded by sound and visual effects. The background soundtrack is some sort of electric rock, which is a perfect fit for the Bolt x Up online slot. The choice of the game's symbols is interesting. Designers added an electrifying décor to the classic symbols like bells, sevens, cherries, and BAR. They look refreshing!

Microgaming came up with an interesting idea for symbols' design combining classic items with the slot's theme. The game has 10 basic elements, half of them are low-paid (cards), and the other half are high-paid. The line of 5 cards pays up to 1.5x the overall bet. Here is the list of more valuable symbols with the odds:

  • Cherries: 3, 4, 5 symbols pay 0.6x, 1x, 2x the bet
  • Bells: 3, 4, 5 symbols pay 0.7x, 1.5x, 2.5x the bet
  • BAR: 3, 4, 5 symbols pay 0.8x, 1.8x, 2.8x the bet
  • Seven: 3, 4, 5 symbols pay 1x, 2x, 3x the bet
  • Gems: 3, 4, 5 symbols pay 1.2x, 2.5x, 4x the bet

The special symbols of the game are wilds and scatter. And both are payable. Wilds have multipliers of 1.5x, 3x, and 4.5x the stake. They expand to fill the whole reel and substitute all symbols except scatters.

Three or more scatters activate the bonus game and give a 2x multiplier. They pay in any position on the reels. Scatters are also part of the X UP feature. It's nothing surprising, as the symbol has an "X" mark on it. Every 2 landed scatters on the reels increase the X UP meter by 1 point.

Bolt X UP slot paytable

Mobile Compatibility

Mobile Compatibility

It doesn't matter whether you want to play on a PC or your mobile device, as the Bolt X UP slot will work perfectly fine on both of them. Game developers used an HTML5 technology making their products compatible with almost every modern platform. You can start playing this game by tapping just once on your gadget's screen. A few clicks will be enough to set the bet size or change settings (volume, autoplay, spin speed). The slot's interface is comfortable to work with on every platform.

About Microgaming

Bolt x Up is the product of Microgaming, which is one of the most famous iGaming holdings in the world. To be more precise, this slot is the work of the Alchemy Gaming studio. The latter has been part of the Microgaming family since 2019. With the release of the Bolt X UP slot, Alchemy Gaming increased its "X UP" line to 3 titles. They released games like Chronicles of Olympus X UP and Africa X UP. The studio definitely has some potential, and its cooperation with Microgaming is not a coincidence.

Bonus Rounds & Free Spins

Bonus Game in the Bolt X UP is about the scatter symbol. Three scatters on the reels trigger the special round. You get 8 free spins with the current multiplier on the X UP meter for starters. The multiplier increases during the base game whenever 2 scatters land. There are 10 levels on the meter from 1x to 10x. Every level has its progress bar. For example, you need only 1 pair of scatters to reach 2x, while for 3x, you need another 3 pairs of scatters.

During the free spins, you can also increase the X UP multiplier. What is more, landing 2 scatters on the reels awards player with additional 2 free spins.

There is also another way to activate the bonus game. You need to reach the 10x level on the X UP meter during the regular mode. With that, you will get 8 free spins with a 10x multiplier.

Important to note that the X UP meter resets after free spins.


After activating the bonus free spins, you can increase the multiplier with an Upsizer feature for a calculated cost.

Bonus Buy

The price of the bonus round is 60x, so with an overall bet of €1, you will pay €60 for activation. Take note: slot chooses the multiplier randomly.

Bolt X UP slot machine

Bolt X UP Demo Play

Our website gives you a chance to play Bolt X UP online slot for free. We share the game's demo version on this page, so our visitors can enjoy it whenever they want. No registrations or deposits are needed! There are also some other free ways to play the Bolt X UP slot. For example, the game is available in online casinos and on providers' websites.

Max Win

The maximum possible multiplier in this game is up to 10,000x.

Winning 10,000x the bet is the real possibility in Microgaming's Bolt X UP. A big win can occur in the bonus game with the maximum multiplier (10x). Be ready to work hard to reach the top level on the X UP meter. It might take some time, but it's definitely worth trying. With luck, you can also catch a few expanding wilds simultaneously.

Overall Rating


This slot provokes some mixed feelings. Isn't it strange to root for the long series of dead spins to get the bigger multiplier for the bonus round? That's how the X UP feature is working. The good news is that you can buy an increased multiplier with the Upsizer feature. We can say that Bolt X UP online slot is about the choice. The choice between conservative waiting and instant action. And we think it's great.

Bonus buy feature
Big win potential
Upsizer feature to increase the multiplier of bonus free spins
Expanding wilds during regular spins
The long series without bonus games is needed to reach a big multiplier
Some settings and features may not be available in some jurisdictions


Does Bolt X UP have a jackpot?

You can't win the jackpot in the Bolt X UP slot.

Can I change the speed of the spins?

Yes, you can change it in this slot. Click on the "settings" icon and activate or deactivate "Quick Spin".

What is the X UP feature about?

It's about collecting scatter symbols to increase the cumulative multiplier.

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Joe Booth
Joe Booth
Expert in: News, Blog, Slot reviews
Joe is an expert online casino player, who knows all the tricks and tips on how to get to the most massive wins. He is also an experienced online casino games reviewer, with hundreds of written articles behind him, on all kinds of online casino games. He makes sure to play them, see how they work, and then gives his honest expert opinion about them to other players, our readers. 
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Overall rating

Based on 2 reviews

Sloto Toto own avatar
Sloto Toto
6 lvl Superstar
Winning:: €19
Multiplier: x47
Nice combination of classic symbols & electric theme. Slot looks and sounds really cool.
But the game is also pretty playable. I love how a usually annoying landing of 2 scatters here is actually a good thing. As with every 2 scatters you increase the multiplier. IMO, it’s good game for a long session, at least 200 spins, as it has a cumulative multiplier. If you don’t want to wait for that long, ok, buy the bonus.
Judging by my experience here you can clearly feel swings of variance.
Primstan own avatar
6 lvl Superstar
Winning:: €19
Multiplier: x194
I do like the entire Thunder theme, that they have going in this slot. Symbols are drawn with style and luxury. Sounds effects add a bit of suspense, which is a nice touch. I would say this is one of the grinding slots, since it takes a while to reach Free Games and higher multiplier within these free games. Free games re-trigger nicely, that is a huge benefit and these X Up symbols appear often enough. Base game still can pay, but the multiplier is the key. Overall pretty decent game to play.