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We evaluate slot machines based on multiple criteria, from which we make our final verdict.
Design and theme
94 %
Features and playability
92 %
RTP and volatility
95.16 %
Slot machine details and review 12 Coins Grand Diamond Edition
12 Coins Grand Diamond Edition from Wazdan is a slot that pulls you straight into a world of big stakes and even bigger expectations. The game grid has 4 reels, 3 rows and no paylines, but youβll quickly realise that classic winning combinations arenβt the main focus here. The atmosphere is tense and every spin feels like a step towards a potential hit that could significantly change your bankroll. This slot is all about building suspense and gradually unlocking wins, which keeps you playing longer than you originally planned. If you like games where waiting can turn into a big reward, youβre in the right place.
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
The slot sticks to a theme of coins, diamonds and luxury, which underlines its βGrand Diamondβ identity. The whole setting feels lavish yet clear, so youβll quickly get your bearings on whatβs happening on the reels. The key difference compared to typical slots is the absence of classic symbols in the base game β you wonβt find any fruit or card values here. All attention is focused on Bonus symbols, which are the key to wins and triggering features. This approach makes the game distinctive and sets it apart from traditional slots.
The main symbols include Cash, Cash Infinity, Mystery and Jackpot Mystery, along with the MINI, MINOR and MAJOR jackpots. Cash symbols award wins ranging from x1 to x10 of your stake, while Cash Infinity offers higher values from x5 to x15, and also stays locked during the bonus game. Mystery symbols transform into other bonus symbols, increasing variety, while Jackpot Mystery can award specific jackpot prizes. This system creates a complex web of possibilities that replaces classic winning combinations.
Theme and symbols 12 Coins Grand Diamond Edition
An interesting feature of the slot is the Cash Out tag, which can appear on a random reel during the base game. This element adds another layer of tension, as it collects values from various symbols and gradually builds towards a random multiplier from 10% to 300%. This mechanic isnβt common and gives the game extra dynamism. Together with the Chance Level feature, which increases the chance of bonuses, itβs a slot that aims to offer more than just standard bonus mechanics.
Special Symbols and Slot Features
3D
NO
Autoplay
YES
Free Spins
NO
Gamble Feature
YES
Locking Symbols
YES
Wild Symbol
NO
Win Multiplier
YES
Other features
Bonus buy
Bonus Game
Mystery Win
Other Features
Symbol collection
Cash out
Bonus symbols
During the base game you wonβt see any regular symbols on the grid. You can only win in the Bonus Game. In the base game, a Cash out badge can appear on a random reel and will stay there for 20 spins. If you manage to land Cash, Cash Infinity, MINI, MINOR or MAJOR Jackpot, their values are added together.
Once the value on the Cash Out badge reaches zero, a percentage from 10-300% is randomly selected.
Cash Infinity symbol
These symbols appear in the base game and remain on the reels until the end of the Hold the Jackpot Bonus Game. All symbols will be locked in place during spins. Each Cash Infinity symbol stays locked while the other symbols spin. Bonus symbols can award wins ranging from x5 to x15 of your stake.
Hold the Jackpot Feature
All Bonus symbols hold on the reels and, to start, the feature awards you 3 respins. The feature continues until the respins run out or until Bonus symbols land on the reels. Cash symbols can award wins ranging from x1-x10. During the feature, MINI, MINOR and MAJOR symbols may appear. The Collector will also collect Cash and Cash Infinity values and randomly multiply the stake x1-x20.
Mystery Symbols
They can transform into another Bonus symbol (up to Cash Infinity)!
Jackpot Mystery Symbols
They change into MINI, MINOR, MAJOR. If you manage to spin 12 Bonus symbols of any type, youβll then win the GRAND Jackpot worth stake x 750.
Chance Level
You can trigger this feature even 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 x5)
Level 3 with an x10 multiplier (same rules, just with x10)
Volatility Selection
A unique feature of Wazdan slots is the ability to choose your 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 selection, a draw will determine the symbol. After each round, you can leave the feature or push on for 7 draws. But be careful β you can lose the entire win!
Bonus Buy
Using the basket button, you can buy access to the Hold the Jackpot Bonus Game and the 12 Bells Bonus Game and activate them at Extreme and Double Extreme Volatility levels, which are known for bigger wins than other Volatility Levels.
Prize table
Symbol
Multiplier
Our rating of the game
12 Coins Grand Diamond Edition
12 Coins Grand Diamond Edition is an expanded and slightly more attractive version of the original concept, adding new elements such as the Cash Out badge and higher win values. The gameβs biggest strength lies in the combination of Hold the Jackpot, Cash Infinity and Collector symbols, which together create strong winning potential. Chance Level and Bonus Buy give the player more control over how the game plays out, which is a big plus. On the other hand, the base game can still feel empty and, without the bonus, it offers almost no wins. If you enjoy risk and waiting for a big hit, youβll have fun, but if you prefer frequent smaller wins, it may get boring quickly. Overall, itβs an interesting but fairly demanding slot that really tests your patience.
Bonuses to casinos where slots Wazdan slots can be played
Rating
94%
How do we rate bonuses?
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.
Rating
93%
How do we rate bonuses?
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
Rating
91%
How do we rate bonuses?
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
Rating
91%
How do we rate bonuses?
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.
Rating
91%
How do we rate bonuses?
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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