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We evaluate slot machines based on multiple criteria, from which we make our final verdict.
Design and theme
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RTP and volatility
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Slot machine details and review 15 Coins Grand Gold Edition
15 Coins Grand Gold Edition from Wazdan grabs your attention at first glance with its luxurious gold styling, but the real strength lies beneath the surface. The game runs on 5 reels and 3 rows, completely ditching traditional paylines and focusing purely on its bonus system instead. Every spin feels more like a step towards a big win than a chase for small line hits. After just a few spins, youβll realise this one is all about patience and timing. If youβre looking for a slot that keeps you on edge and plays for high rewards, this is exactly that kind of game.
Every slot machine must be developed by a company that invented, designed and put it into operation. Many players eventually find that they only enjoy playing on machines from specific software provider, so they narrow down their selection by preferred brand.
A high volatility slot. Wins are rare, but can be really big. The game has more pronounced fluctuations and can often go without hitting anything for a long time, suitable for players who like adrenaline, higher risk and work with a larger budget. More about volatility here.
Slot theme and symbols
Slot 15 Coins Grand Gold Edition is all about wealth, gold and big wins, which is reflected in its visual style too. Unlike classic slots, you wonβt find any traditional symbols like fruit or card ranks here, because the game works exclusively with bonus features. The base game grid is made up only of Bonus symbols, which only become meaningful once the main feature is triggered. Alongside Bonus symbols, youβll also see Cash symbols with values from x1 to x10, and most importantly Cash Infinity, which brings higher values ranging from x5 to x15 of your stake. The core of the whole slot is the Hold the Jackpot feature, which activates when you land 5 Bonus symbols on the middle row.
Theme and symbols 15 Coins Grand Gold Edition
During the bonus, MINI, MINOR and MAJOR symbols appear, along with the Collector, which gathers values and multiplies them up to x20. Mystery symbols add an element of randomness, as they can transform into other bonus symbols. The Chance Level feature lets you increase your chances of triggering the bonus, while the volatility option adjusts the play style to suit your preferences. Thereβs also Risk and Bonus Buy, giving you more control over how the game plays out.
Bonus Symbol
While the reels are spinning, you wonβt see any of the usual symbols youβre used to from other slots. Youβll only land wins in Hold the Jackpot. The Bonus symbols only apply in the Bonus Game. If you land 5 Bonus symbols on the middle row, youβre guaranteed to trigger the Hold the Jackpot feature.
Cash symbol
These symbols award wins ranging from x1βx10.
Cash Infinity Symbol
You can spin them in the base game, and theyβll stay on the grid until the end of the Hold the Jackpot Bonus Game. On the next spin, the symbols will lock in place. Bonus symbols can award wins ranging from x5 to x15 of your stake.
Hold the Jackpot Feature
Itβs played on 15 reels! All Bonus symbols stick on the reels, and the feature starts by awarding you 3 respins. The feature continues until you run out of respins or until Bonus symbols land on the reels. Cash symbols can award wins ranging from x1βx10. During the feature, MINI, MINOR and MAJOR symbols can appear. The Collector will also collect the values of Cash and Cash Infinity and randomly multiply the stake by x1βx20. Mystery symbols can transform into another Bonus symbol (including Cash Infinity)!
Jackpot Mystery symbols transform into MINI, MINOR, MAJOR. If you manage to land 15 Bonus symbols of any type, youβll win the GRAND Jackpot worth x2000 your stake.
Chance Level
You can also activate this feature during the base game and choose one of three levels:
Level 1 with an x2 multiplier β your base stake is multiplied by x2, giving you a 2x higher chance of triggering the Hold the Jackpot Bonus Game.
Level 2 with an x5 multiplier (same rules, just with x6)
Level 3 with an x10 multiplier (same rules, just with x13)
The Chance Level feature doesnβt affect the paytable, which means symbol values stay the same.
Sticky symbols when changing Chance Level β these symbols are temporarily removed from the reels and will only appear at the Chance Level where they were won.
Volatility selection
A unique feature of Wazdan slots is the ability to choose volatility! It depends on your playing style and preferences. You can choose between low, medium and high volatility. Volatility determines the frequency and size of wins. With low and medium volatility youβll land more wins, but theyβll be relatively small. With high volatility, you can hit so-called BIG WINs!
Risk Feature
Once you land a winning spin, you have the chance to use your win in the Risk feature. Youβll choose between two symbols. After your pick, a draw will determine the outcome. After each round, you can either cash out or continue up to 7 draws. But be careful β you can lose the entire win!
Bonus Buy
Using the basket button, you can buy bonus features such as the Hold the Jackpot Bonus Game and activate them at Extreme and Double Extreme Volatility levels, which are known for bigger wins than other Volatility Levels.
Our rating of the game
15 Coins Grand Gold Edition
The online slot 15 Coins Grand Gold Edition is the kind of machine you either βgetβ and grow to love, or it simply wonβt be your cup of tea. Its biggest strength is the Hold the Jackpot bonus feature, where Cash, Cash Infinity and Collector symbols combine to create real potential for seriously big wins. On the flip side, the base game can feel a bit repetitive, because without the bonus it doesnβt deliver classic wins. Chance Level and Bonus Buy do give you ways to influence how the game plays, but they also increase the risk of burning through your balance faster. Overall, itβs a slot aimed at players who are chasing big hits and donβt mind waiting for them.
The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.
Use the bonus spins offer at PlayOJO to get 50 FS on the Big Bass Bonanza slot. The minimum required deposit to activate the bonus is Β£10 and your spins can be played at the Β£0.1 chip size. Note that the bonus is not available for players from N.I. Irregular play may lead to the removal of rewards. Gambleaware.org. All the OJO Rewards and Game Play policies apply.
Bingo Bonus: First deposit only. Deposit Β£10 or more to claim. 50 free spins on Big Bass Bonanza slot. 500 free bingo tickets when you spend Β£10 on bingo, valid once per player. Free tickets valid on selected games up to Β£0.10 each, see bingo rooms for info. Excludes players in N.I. Irregular play may lead to removal of reward. OJOβs Rewards and Game Play policy applies.
The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.
11 FS – New players only. 18+. Min. deposit Β£10. Account ballance is withdrawable at any time. Upon withdrawal, any remaining bonus spins are forfeited. 7 days to activate the spins. Bonus spins will expire 24 hours after activation. Full T&C Apply.
Β£50 deposit bonus – New players only. Min. deposit Β£10. 30 days to activate & 60 days to use deposit bonus after activation. Wager req.: 10x on eligble games. Max. Bonus Β£50 . Bonus balance is paid with 10% Increments to account balance. Bonus balance is not payable. Max. bet is Β£20 or up to value 50% of the bonus amount – whichever is lowest. Account ballance is withdrawable at any time. Upon withdrawal, any remaining deposit bonus is forfeited. Full T&C Apply, play responsibly. Gambleaware.org
The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.
18+. New Players Only. Β£10 minimum deposit. 100% up to a maximum of Β£200. The welcome offer can be activated only once. 30 calendar days to activate. 35x wagering. 60 calendar days from activation to complete wagering. The 100% bonus up to Β£200 will be paid out in 10% increments to your Main Account balance. Bonus balance is not payable. Any remaining bonus balance will be forfeited upon withdrawal. T&Cs Apply. GambleAware.org
The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.
18+ New players only. Min dep. Β£20. Valid for 14 days from registration. Welcome Offer: Earn points for cash bets made to unlock wager-free spins on selected games: 2 points for every Β£10 bet on Slots, 1 point for every Β£10 bet on Video Poker and qualifying Side Bets. 0.25 points for every Β£10 bet on Roulette games. Maximum accumulation of redeemable points is limited to 2000. You will receive spins based on the number of points earned:10, 20, 35, 50 points = 5 spins, 70 points = 1 Superspin, 100 points = 10 spins, 200 points = 5 Superspins, 300 points = 4 Superspins, 500 points = 6 Superspins. Additionally you will earn an extra 120 Spins for every 375 points earned above the 500-point threshold, until you reach a total of 2000 points. Spins credited the next day. Spin winnings credited as cash funds and capped at Β£100 per batch of spins. Cash funds are immediately withdrawable. Wager-free spins must be used within 72 hours. Terms Apply. GambleAware.org.
The overall bonus rating is determined based on several factors: the amount of the bonus, the company's rating, the ease of obtaining it, the players' rating and the conditions for obtaining the bonus.
18+.New UK Customers only. Deposit and stake Β£20. Debit Card only (exclusions apply). 50 free spins credited daily over first 3 days, 24 hours apart. 150 free spins total. Spin value locked at Β£0.1 per spin. No wagering requirement on the winnings of the free spins. Spins expire after 7 days. Betway reserves the right to terminate the bonus in case players do not stick with the T&Cs. BeGambleaware.org
Warning: Play and gamble responsibly | Gambling may be addictive 18+ | Underage gambling is an offence | When the fun stops, stop.
Use the bonus spins offer at PlayOJO to get 50 FS on the Big Bass Bonanza slot. The minimum required deposit to activate the bonus is Β£10 and your spins can be played at the Β£0.1 chip size. Note that the bonus is not available for players from N.I. Irregular play may lead to the removal of rewards. Gambleaware.org. All the OJO Rewards and Game Play policies apply.
Bingo Bonus: First deposit only. Deposit Β£10 or more to claim. 50 free spins on Big Bass Bonanza slot. 500 free bingo tickets when you spend Β£10 on bingo, valid once per player. Free tickets valid on selected games up to Β£0.10 each, see bingo rooms for info. Excludes players in N.I. Irregular play may lead to removal of reward. OJOβs Rewards and Game Play policy applies.
11 FS – New players only. 18+. Min. deposit Β£10. Account ballance is withdrawable at any time. Upon withdrawal, any remaining bonus spins are forfeited. 7 days to activate the spins. Bonus spins will expire 24 hours after activation. Full T&C Apply.
Β£50 deposit bonus – New players only. Min. deposit Β£10. 30 days to activate & 60 days to use deposit bonus after activation. Wager req.: 10x on eligble games. Max. Bonus Β£50 . Bonus balance is paid with 10% Increments to account balance. Bonus balance is not payable. Max. bet is Β£20 or up to value 50% of the bonus amount – whichever is lowest. Account ballance is withdrawable at any time. Upon withdrawal, any remaining deposit bonus is forfeited. Full T&C Apply, play responsibly. Gambleaware.org
18+. New Players Only. Β£10 minimum deposit. 100% up to a maximum of Β£200. The welcome offer can be activated only once. 30 calendar days to activate. 35x wagering. 60 calendar days from activation to complete wagering. The 100% bonus up to Β£200 will be paid out in 10% increments to your Main Account balance. Bonus balance is not payable. Any remaining bonus balance will be forfeited upon withdrawal. T&Cs Apply. GambleAware.org
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