Castle Builder II Online Slot Review

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Play Castle Builder II online at LeoVegas

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Castle Builder II Online Basics

Finding a good video slot that’s worth your time is hard. Castle Builder II may be just the thing, with its fabulous animation and £37500 the maximum win. Its maker, Microgaming hit the spot for Video Game-themed games’ fans with the Fantasy theme perfectly depicted on the slot’s 5 reels and 15 paylines. This interesting title also includes, bonus rounds and many useful features and buttons that make Castle Builder II a unique title you’ll want to play.

Castle Builder II Online: A Quick Summary

This left to right-paying slot has quite a few qualities, which Microgaming cunningly included to attract more than just Video Game slots fans. Here’s what the fuss is all about.

The Castle Builder II online slot involves 10 symbols with wild and scatter symbols. This interesting video slot also has free spins rounds.

Access this quality Microgaming title immediately in one of the supporting casinos, including LeoVegas. Opening an account there is as easy as 1-2-3, and after registering, you can even play on your mobile using a convenient LeoVegas mobile app. To make things even better, there are the aforementioned LeoVegas promos which could bring you up to £1600 in welcome bonus money. Use the cash to spin and win on Castle Builder II and other titles with the Fantasy theme.


From the moment it was releaded in 2017, Castle Builder II positioned itself as a neat contemporary slot game. One of the things that sets it apart is Microgaming’s dedication to improve it so the players can have a problem-free Video Game slot.

Playing Guide

Couple of pointers to take into account before playing Castle Builder II:

  • The minimum number of symbols for one of Castle Builder II’s winning combinations is 3
  • All prizes are paid left to right, except for scatter prizes
  • Activate up to 15 win lines; pays are made only for wins on active lines
  • Single payout per line is made, always for top wins
  • Wilds enable additional wins by replacing symbols other than scatters
  • Scatters pay at any position on Castle Builder II’s reels
  • No gambling of the max wins or prizes won during autoplay is allowed in
  • Castle Builder II awards 20 free spins
  • A minimum bet of £0.01 per spin is required
  • In case a malfunction occurs, all prizes and plays will be proclaimed void

How to Play Online Castle Builder II

How and where to play Microgaming slots online for real money? We have the answer. Microgaming conveniently made this video online slot to pay left to right on the maximum of 15 paylines. You win when you match 3 symbols on a payline, while major Castle Builder II prizes are reserved for wins with 5 of the same symbols.

Opting for the right casino to play the Castle Builder II slot is important. Pros should include a welcome bonus and LeoVegas is offering exactly that. The 200% bonus in the amount up to £1600 awaits you as soon as £10 or more finds its way to your LeoVegas account.

So, why not try Castle Builder II for real money, when this Microgaming slot could award you with up to 75000 coins that’ll earn you £37500 of cash money. At LeoVegas, you can play this video slot right away on their flash website, and on your mobile device.

Prefer test-ride before plunging in? Castle Builder II free-play version can be found at LeoVegas whether you play on computer or mobile. The installation of this 5-reeler is not necessary.

The Spin button will start those reels. You can adjust your bet value beforehand with the Bet Value button. You need to have the minimum of 3 identical symbols, while the maximum is 5.

Excitement and prizes come with 5 corresponding symbols on the line. This Microgaming title allows betting on max 15 paylines, which means better chances to win. Just click on the payline switch to set up the criteria.

Here’s a Step by Step Guide:

  • The number of activated lines is the first setting.

Playing Castle Builder II means activating between 1 and 15 win lines. Of course, 15 lines should always be your choice, especially if £37500 is your heartwarmer.

This video slot has left to right paying lines. With rewards that are small but regularly given and 15 lines, your winnings could be meanigful.

  • After this, the coin value is your next step.

Widely known as coin size, this setting in Castle Builder II is adjustable by means of a specific button. £0.01 is the minimum betting amount, whereas £2 represents the maximum for those who play big.

Getting some bigger prizes in this video slot title demands that you go with all 15 paylines. Just imagine getting the Castle Builder II top prize of £37500. To make things more flexible, Microgaming lets you choose a range of coin values, so pick yours carefully, for Castle Builder II’s top line bet multiplier of 5000 is hidden somewhere on those 5 reels.

  • After credit sum, your next step is to choose a line bet.

There’s only one coin per line value to choose in Castle Builder II – 1. Perhaps more will be available in some new versions of Castle Builder II.

Regarding paylines, maximum 15 of them can be selected, while 1 is the minimum. Select them via Castle Builder II’s special button for paylines.

Bet value can be adjusted easily in this 5-reel slot, thanks to its bet value button. There’s also a ‘bet max’ option if you want to speed things up.

The least you can go with this 5-reeler’s line wagers is £0.01, but you can pick higher sums, too – £2 is the highest you can go. Microgaming’s obvious intention with Castle Builder II was to target players with deeper pockets.

  • One way to start Castle Builder II’s 5 reels is to press the Spin button.

With this done, you are ready for Castle Builder II’s exciting gaming experience. Watch its 5 reels spin and expect some nice prizes. Microgaming also made auto-play available. Push the Spin button and enjoy up to 100 automatically played rounds.

  • You may run into two more settings in this Microgaming slot: the volume toggle and the full screen mode.

You could say it’s a bit embarrasing that Microgaming didn’t include the full screen mode. Well, they may add it in the next version.

Use the mute button to turn off Castle Builder II sounds. This can come in handy very often.

You can control Castle Builder II’s sounds only by muting it or spinning the 5 reels at full volume.

How Much Do the Symbols Pay?

Here’s a list of symbols and what they’re worth.

  • The Builder’s Crown
  • The Builder’s Chest
  • The Gold Bar
  • The Builder’s Ring
  • The Iron Ore
  • And the Wood as the one that brings the least cash.

Here are also some of this 15 paylines slot’s extra symbols:

  • a wild symbol
  • a stacked wild: The Wild Horde
  • a scatter symbol: the Free Spins
  • a frespins symbol: The Free Spins

If your aim with this 5-reeler is to win big, keep your eyes open for Builder’s Crown, the game’s richest symbol, 5 of which can pay out huge prizes of 5000x payline wager. In cash value, with the £30 maximum stake when all of the 15 paylines are active, this award can amount to a very handsome amount of £37500!

Be on the look-out for this one, it will pay you the most:

The Builder’s Chest figure is there to give you up to £2000. All you have to do is wager the maximum bet and line up 5 of them and let its 1000x line bet multiplier do its magic. With the Gold Bar tile, the third highest, you’ll get the chance to multiply your line stake 500 times. In order to win it, you have to have 5 of them.

Apart from all the big rewards, this 15-payline slot is also known for its Wood symbol and the prizes coming with it. Your Castle Builder II line bet can be increased by up to 20 times if 5 of these symbols find themsleves on an active payline. In addition, this Microgaming game offers other stronger tiles such as the Builder’s Ring, rewarding as much as 250x the line stake,and the Iron Ore, multipling your bet per line by 100 when the active payline shows 5 of those symbols, respectively.

In terms of this Microgaming slot’s special features, the Wild is the one that substitutes for its 10 regular symbols and awards 5000x stake when 5 of them hit the reels. It also includs other wild types.

If you think that the wild symbol is a great idea, wait till you see the Free Spins scatter. It pays wherever it lands and carries a x total bet multiplier!

While you are spinning these 5 reels, the free spins symbol – Free Spins may come your way and enhance your LeoVegas account.

Paylines Info

This Video Game game is classified as a video slot that spins 5 reels and pays on 15 paylines.

This interesting Microgaming slot’s winning combos are defined by the paylines which spread out crossways its 5 reels. It’s the player’s decision how many paylines will be active and how many will be deactivated. All you need to do is use the mouse to click the assigned button.

Keep in mind that with this Microgaming game it is possible to select the coin value by simply clicking the button to increase the coin size.

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Payline Rules

  • Paylines are placed in left to right direction.
  • In order to win, you will need just 3 or more symbols that match in one row on a payline.
  • A wild or a joker symbol will serve as any regular symbol.
  • When you have Wild Horde symbol this will win you multiple paylines.
  • When you have a Free Spins, it will pay, no matter where it is placed.
  • The only win which is paid is the highest win on a certain payline. let’s say you got two wins, in that case, you will be collecting just the higher of those two. If you want to win on lines, you simply have to enable them. If you didn’t bet on a payline, and it ends up winning, you wouldn’t be able to collect the win.

Find Out More About Reels

If you like straightforward, no-nonsense exciting slots, then take Castle Builder II for a spin. Its 5 reels going downward let you concentrate on getting yourself some serious cash! Precisely what Microgaming had in mind with this Fantasy-themed game – easy-breezy spinning for some nice wins.

This 15 paylines slot’s symbols are in charge of making you money. There are 10 of them and some of them could bring you regular prizes. Additionally, some of them are there since Microgaming wanted to boost your chances. That’s why you’ll find a wild and scatter symbol. You may also run into the symbol which carries the stacked wild,

Hit the Castle Builder II Jackpot

Despite the fact there’s no fixed online slot jackpots in Castle Builder II, that shouldn’t put you off going for one of the other regular payout, offered instead of a Castle Builder II jackpot. These include the 5000x line stake multiplier offer you can win if you spin the correct Builder’s Crown symbols in the 5 game. If we look at this in coins, a bet of 1 coins per line can win up to 75000 coins. Looking at it in cash, this could be £37500 of 15 coins staked per spin.

The Progressive Jackpot Feature

No use dwelling over the lack of a progressive jackpot. You have a £37500 prize to get to. Not to mention all those fantastic special bonuses.

Video? Classic? Which Slots are Best?

Players who enjoy video slots should try Castle Builder II. There is an exciting range of animations. Relying on its expertise in video slots, Microgaming made this game highly likeable. Its 5 reels contain some great features, while its 15 lines display animations for every win.

Is Castle Builder II a 3D Slot?

There are no 3D graphics in Castle Builder II, so you won’t enjoy 3D imagery with this video slot. But that doesn’t stop you enjoying this Microgaming game to the full, with the 5 reels paying out nicely if you win.

Info on Castle Builder II Download

When you don’t want to spent too much time on a Castle Builder II download, or setting up a game, you can play it instantly on the LeoVegas website. There, you won’t find just Castle Builder II, but many more interesting and cool Microgaming titles. Should you want to play this video slot just for fun, you are able to do so even on your mobile phone. Now, if you want to dive right in and get the bets rolling, just start playing for real money

Control Panel

Here are the details on how to operate Castle Builder II.

The Spin Command

To enjoy in the view of Castle Builder II’s 5 spinning reels and its prizes that go up to £37500, you need to press a simple button that starts the reels. Although it’s known by many names, this video slot picked to call this much used button Spin. Keep pressing it to keep spinning Castle Builder II, and perhaps win some good bankroll boosters.There are other useful buttons on the Castle Builder II screen to make play easier. They include:

  • The button to turn on the maximum bet
  • A mute button
  • Coin value and number buttons
  • Payline on/off buttons
  • A dedicated bet value control
  • The paytable icon

What is the Turbo Used for?

Engaging the Turbo setting will boost the speed of slot’s reels, along with its free spins making them go faster than normal.

Alas, this Video Game game does not have a Turbo setting. But this way, you’ll get to enjoy this video slot and its 10 symbols’ modern layout a bit longer.

Info Tab

Paytable may help clarify some things in Castle Builder II, but unfortunately Microgaming decided not to give this exciting slot an Info section which would really come in handy, especially to novice players.

Auto-spin Button

When it comes to Castle Builder II’s convenient components, Autoplay catches the eye. In slots related to Video Game such as Castle Builder II it’s a standard option, that enables playing Microgaming and other vendors’ slots without clicking the spin button for every spin. Cool, right? And since Castle Builder II features Autospin, it means its 5 reels can spin on their own with 15 lines paying out up to £37500 and you just sitting and enjoying the view. Castle Builder II’s Autoplay will stop on special features, though. release with that option. Not cool. Therefore, LeoVegas players have to keep hoping that newer Castle Builder II versions will see this fault corrected.

Did you ever think that Spin could be replaced? Well, it can, with Autoplay, entailing that this 5-reels slot can be spun at your leisure!

Minimum Bet

When it comes to Castle Builder II’s prizes, which appear pretty constantly, it’s worth knowing what Microgaming set as the minimum bet, just to know what Castle Builder II’s the max line stake multiplier of 5000x may amount to if you make a small investment into the LeoVegas online slot.

Picking the lowest bet in this video is easy – just reduce coin value to £0.01, and when you play on all 15 lines, your total bet will amount to £0.01. Therefore, you’ll spend way less than £30 a spin, which is the top Castle Builder II bet, available when you select the £2 the max coin size.

You will notice that this video game has the minimum coin value of £0.01. So you have an option to set the minimum of 0.01 per coin and your stake will be £0.01.

In this beautifully crafted slot you can set the lines you will bet on to 1. Be that as it may, you will want to leave all 15 lines included since it will make playing Castle Builder II even more lucrative, meaning you can score some special feature and maybe even a jackpot.

Maximum Bet Level

Surely, you want to get your winning odds to the maximum level? Microgaming wants that for you as well, therefore there is a neat little button that does that for you – the max Bet button. Here in this video it is called bet max. Make sure you click on it before you start spinning those 5 reels. This game with interesting Video Game content lets you wager the maximum of 15 coins, which means placing 1 coins per each of the 15 lines. Translating this into cash, investing £2 per coin would make a top bet of £30.

Castle Builder II RTP

Return to Player aka RTP in Castle Builder II represents a payout percentage of the Video Game slot, calculated over a time period. In video slots, RTP is usually between 93% and 96%.

It’s such a pity Microgaming didn’t install more generosity into Castle Builder II RTP, as with a return to player rate of 95.5%, this otherwise decent game seems wasted.

Bonus Symbols

There will be more information further down, but just so you know – Castle Builder II is a pretty neat slot because it has the Wild and the Free Spins symbols incorpotated.

Scatter Symbol

It is a great game, this 5-reel slot, as it has a scatter symbol, entitled the Free Spins,, and Microgaming has made it lucrative without even showing along the 15 paylines. The reward can be up to times your wager, along with the Free Spins round, all of this making it very alluring.

Wondering how you’ll know the the Free Spins scatter from the other 10 symbols? Here’s a pic:

What is the Wild Feature?

Microgaming game’s wild symbol is a stand-in for other symbols, such as Builder’s Ring, and functions to complete the winning combos. Thus, with 4 Builder’s Ring icons on 15 active lines, coming up with the Wild in the right position entails that you will have 250x wager per line for all 5 symbols which align.

See the Castle Builder II wild symbol above.

Expanding Symbols in this 5-reeler

Sadly, this Microgaming release does not feature an expanding wild symbol, although it is not uncommon for 5-reel slots to include it. And yet, Microgaming has created many other scintillating features that you will find very rewarding during your spinning.

Is Getting a Stacked Wild Possible in Castle Builder II?

Fortunately for your LeoVegas bankroll, there’s a nice-paying stacked wild in Castle Builder II. Its major prize is a line bet multiplier of x.

The Overlay Symbol in Castle Builder II

It may be that you may feel let down that this 5-reeler lacks an overlay wild but hopefully, Microgaming might give this game one in a future update.

Using the Paytable

The paytable is a very useful tool for Castle Builder II betting strategy and budget planning. For this Microgaming slot’s paytable, press a dedicated button and find out what all the 10 symbols pay out. This 15-line slot payouts start with 3 matching symbols, and top payouts are for 5 of a kind symbols on a payline. The Builder’s Crown is its the top paying symbol, awarding 5000x line bet for all 5 symbols on an active line. Further on, the Castle Builder II paytable shows the second-highest payouts come from the Builder’s Chest, which multiplies stake per line up to 1000 times. But let’s not forget the generosity of the Gold Bar – with 5 of those symbols, your LeoVegas bankroll will be nicely boosted by 500x bet per line. And that’s not all – the Builder’s Ring is also there to reward your investment 250 times more than your stake per line. Castle Builder II’s decent payouts don’t stop there – out of 10 symbols, the lowest paying one is the the Wood, which pays most frequently, and Microgaming even gave it a very decent payout – 20x line stake for 5 of them lined up on one of the 15 lines. How cool’s that?

Wondering how it works in practice? Well, Castle Builder II will pay you £0.2 whenever you line up 5 of Wood symbols on one of its 15 lines. The same goes for other symbols – 5 Gold Bar tiles will bring you £5. And there’s always the top prize – £50 that you’ll get for hitting 5 of a kind Builder’s Crown symbols on one of the lines.

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Selecting the Bet Size for Castle Builder II

Your bet size is responsible for your prize size. These are the ways you can adjust that bet.

  • Making your choice of paylines
  • Fixing the bet level
  • Specifying the coin value
  • Establishing your cash bet per payline

Your preferences are respected by Castle Builder II, so you can choose which of its 15 lines you will bet on. Indeed, Microgaming has locked only one thing here – the minimal number of one active line.

What is bet level? Just an another way to arrange your virtual coins over 15 lines in Castle Builder II. Choose 1 – 1, betting between 15 and 15 on each turn.

The Coin System in This Microgaming Slot

Each coin you use has a distinctive value in cash. It’s important to learn how to set it:

LeoVegas coins are worth from £0.01 to £2 in cash. You can assign each coin with a value from £0.01 to £2. To set the value you prefer, just click on the plus and minus buttons. A few simple calculations involving win lines and coin amount tell us that the overall Castle Builder II bet spans from £0.01 to £30.

How About a Multiplier in Castle Builder II?

Bear in mind that a 15 paylines slot multiplier extra feature is not the same as the line bet multiplier. The latter can be 20x multiplier, or it can go up to as much as 5000x. This special multiplier wasn’t included in Castle Builder II, but another special – Achievements, Avatar Level-Ups, Castle Building, Savable Progress and Royal Weddings – is here to pocket you a nice prize.

Free Spins, Bonus Games and Special Awards

What features are there in Castle Builder II?

Does Castle Builder II Sport a Bonus Game?

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The Gamble Round

With 15 paylines that can bring you cash, Castle Builder II can be pretty good to your account, except that Microgaming didn’t let it give you the double or nothing option. So you coul say this 5-reels isn’t for hard-core gamblers.

In-Game Castle Builder II Free Spins vs Bonus LeoVegas Free Spins

It’s not a rare occurence for online casino players to get mixed up between Castle Builder II free spins, that are a constituent part of the game and LeoVegas free spins, that are offered as a bonus. Sites like LeoVegas might offer you free spins as a promo, so the 20 + 100 will be there for you on sign up to LeoVegas, so you might be lucky enough at this Microgaming game to earn yourself some nice cash. On top of this, many casinos offer a free play feature. You should be aware that playing Castle Builder II as free play won’e win you any cash for your LeoVegas balance. So if you want to win real money, play Microgaming games for real.

You can potentially win 20 free spins at various points while playing the Castle Builder II slots game.

You can win a decent amount using Castle Builder II’s free spins, as Microgaming decided to include a very nice 20 spins for free in the game. So adding money to your LeoVegas account could become much easier. There’s on offer through free spinsin Castle Builder II if you’re lucky enough!

Visual Effects

Similarly to other Microgaming video slots, this 15-line game provides not just genuine graphics that finely complement its Fantasy content, but also a number of buttons that serve to:

  • inspect the paytable
  • activate or deactivate the Castle Builder II lines
  • establish the bet value
  • opt for the coin value
  • maximize your game with the maxbet switch
  • turn on the mute button
  • make the autospin option active


For a video slot, the related sounds are important. Microgaming made sure to include them in Castle Builder II and particularly highlight the £37500 max wins Yet, if this is too much, this 5-reeler provides perfect silence via mute click.

How to Play Castle Builder II for Cash:

It’s great that Castle Builder II has such vivid graphics and extra features, but playing this Microgaming title for fun is all it is – fun. Castle Builder II won’t pay out real rewards, such as its 75000 coins the max prize in fun mode, so make sure LeoVegas’s real money mode’s on if you want those 5 reels to bring real money.

Thinking about trying to win money on the 5 reels slots? Fancy a go at the £37500 on offer as a prize? And the bonus features on offer? OK, here’s what LeoVegas requires you to do:

How to Play LeoVegas Slots for Real Money:

If the possibility of the regular, smallish wins on offer at LeoVegas has intrigued you, here’s how to open an account:

  • Search for LeoVegas’s official website and use the sign up option
  • Fill out the form
  • Get a 200% up to £1600 on your first deposit plus 20 no deposit free spins and 100 after deposit
  • Make at least the minimum deposit of £10
  • Wager all you like on Castle Builder II


Getting to your money is made easy at LeoVegas. Everything you will will imidiately go to your account. You can withdraw that money by using Paypal or Skrill which most punters use. Usually, there’s some kind of limit, so you’ll want to check that.

You can cash out even on a LeoVegas bonus, including their welcome offer of 200% on your deposit. To do so, meeting the 35 x playthrough is a must, if you want to withdraw your Castle Builder II winnings. Just make sure you’re familiar with LeoVegas’s T&Cs before withdrawing, but know that Castle Builder II’s rules don’t have this info, ’cause Microgaming doesn’t have a say in this matter.

Is There a Way to Check Out Castle Builder II Without Placing Real Bets?

If you are just curious to see what this video slot is about, you can play Castle Builder II online for free, be it on your computer or on your mobile.

You don’t have to bother with openning LeoVegas account to play Castle Builder II free mode. This video slot and many more Microgaming slots are laid out for you to try – just head on to their website and start spinning the 5 reels.

If you’re playing this 5 reel game in Castle Builder II free play mode, consider the amount Castle Builder II could have provided you with for real. So to make the most of this Microgaming game, switch up to the real money play mode at the LeoVegas. Deposit the min £10 to start playing for real. Castle Builder II’s minimum line stake is only £0.01, so you could be playing for real for quite some time. Having deposited your £10, you can also use the nice £1600 bonus amount to keep you spinning the game’s 5 for even longer.

Can I Get a LeoVegas No Deposit Bonus for Castle Builder II?

There is no LeoVegas no deposit bonus at the moment. However, the 200% bonus for new players can help with your Castle Builder II game play, and the minimum amount of deposit is only £10. So you should be able to play this Microgaming game for some time.

Castle Builder II App

LeoVegas made this genuine title available to iOS, Android, Windows device owners through a Castle Builder II app with the same flashy design, the same top win of 5000x line bet, and the same good, old 95.5% payout rate. Therefore, you can play Castle Builder II on the go, spinning those 5 reels at the same speed as on LeoVegas’s desktop version.

If you want to play this video slot on the go, and you have an iPhone or iPad, you can do that via the LeoVegas app for iOS. Here you’ll also find other Microgaming titles that may take your fancy.

Android users, hail LeoVegas app designed especially for you! Play Castle Builder II and other games by Microgaming after downloading it from Google Play or LeoVegas’s site. Enjoy it all you like, wherever you like.

Albeit most casinos overlook Windows Mobile users, LeoVegas isn’t one of them. You’ll be able to download an app for Castle Builder II and enjoy the fun.

This Video Game-themed title and other quality Microgaming games can be played using the free LeoVegas app. Hence, trust no site that offers a paid app, ’cause it’s not authentic.

Play Castle Builder II Mobile and Get a Bonus

Playing Castle Builder II mobile is exciting, but what may dampen your spirit is that LeoVegas will offer you no bonus to play this or other Microgaming titles on the go. Strange, isn’t it? Let’s hope the the max win of £37500 finds its way to your pocket instead.

How Much Can I Win?

What’s the top win in Castle Builder II? Find all the info in this LeoVegas game’s paytable, available through the paytable toggle. It will show you this 5-reel slot’s top winning symbol is Builder’s Crown, which could bring you a 5000x line bet multiplier, when all 5 of them appear on one of the 15 lines. In terms of cash, Castle Builder II’s top win is £37500.

Castle Builder II Strategy

Your winning odds on this video slot depends on two similar factors – the Castle Builder II RTP and the house edge. RTP is Castle Builder II’s payouts/wagers ratio calculated over a longer period of 5 reels spinning and those 15 lines paying, while house edge is what LeoVegas will make on average.

It’s also advisable to always bet on all 15 lines, keeping your winning odds as high as possilble. With Castle Builder II this is easy – even if you wanted to, you cannot exempt any of the lines from the bet.

If you’re aiming for that 5000x line bet top win, you should know that those 5 reels award smaller but frequent prizes, so it may be a while before you get a prize like that. But who knows, maybe Lady Luck turns out to be on your side today!

All in all, if you’re hoping to get a magical recipe for winning in Castle Builder II, no one can give you that – after all, its payouts are determined randomly, but the 95.5% RTP rate sufficiently indicates what you could count on winning in this slot with regular if not major payouts.

Some Basic Facts about Microgaming:

  • Established: 1994
  • Founder: Martin Moshal
  • Headquarters: MGS House, Circular Road, Douglas IM1 1BL
  • Website:
  • Specialties: Gaming Products & Software Solutions, Online and Mobile Gaming Applications, Gaming Operations, E-Gaming Platform
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