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The online slot machine 81 Double will surely entertain you with its fruity symbols and modern touch. This slot comes from the workshop of developers Casimi. 81 Double follows the standard rules of four-reel slots with 81 fixed paylines, which means that wins are calculated from left to right for any combination of at least three identical symbols. Thanks to the simple gameplay, the game is suitable for both beginners and more experienced players who want to enjoy a quick and simple 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.
What are the Cylinders or Reels on a slot machine?
Reels are the basic element of most slot machines and are columns of symbols that spin and stop on the screen gradually during the game. They are therefore the basic element on which symbols spin and on which winning combinations are formed. The most popular numbers of reels are 3 and 5.
Paylines on slot machines are imaginary lines that run through the reels of the machine and determine which combinations of symbols on these lines are considered winning. As the reels spin, players try to achieve winning combinations of symbols on these lines. Combinations must always start from the left. Each payline has its own payout value, and the winnings are determined by the paytable for each symbol on the particular machine. Modern slot machines can have hundreds of paylines, and players often have the option to choose how many of these lines they bet on.
81 paylines
RTP
What is RTP
The RTP of slot machines is a rule of thumb for how much money a slot machine will return to players. Let's say you put 100 crowns in it, the RTP determines how much of that money you should get back. The average value is 92 to 97%.
92%
- 96%
Layout
4x3
Slot theme and symbols
At first glance, 81 Double is a classic fruit machine inspired by traditional slots from brick-and-mortar casinos:
The graphics are simple, but also clean and modern. The symbols include classic fruits, sevens, bells and BAR symbols, which is a visual style that nostalgically reminds you of old slot machines. The animations are smooth and well-crafted, which contributes to the overall visual experience.
When you win, the symbols will highlight and glow, which enhances the success of winning spins.
The soundtrack is quite minimalist, with basic mechanical sounds of the reels spinning and classic sounds of winnings.
Players who prefer clean and simple visuals without distracting elements will like this machine.
Despite being a type of fruit machine, you can spin WILD symbols here, which can appear anywhere on the reels and complete winning combinations.
In addition, you will have Mystery symbols available. If you spin them on the playing field, a random win will be waiting for you.
81 Double offers an RTP of around 96%, which is a solid figure, but there are slots with much better odds.
game has medium volatility, which means that the wins don’t come like a treadmill, but you have to wait quite a while before you get a win.
Theme and Symbols 81 Double
Hearts
Diamonds
Spades
Clubs
Apples
Watermelon
Stars
Cherries
Lemons
Special Symbols and Slot Features
3D
NO
Autoplay
YES
Free Spins
YES
Gamble Feature
NO
Locking Symbols
YES
Wild Symbol
YES
Win Multiplier
YES
Other features
Bonus Game
Other Features
WILD Symbols
The WILD symbol replaces all other game symbols. If a WILD symbol appears, it is fixed and the player is awarded three bonus rounds. If a new WILD symbol appears after a re-spin, it is fixed again and the player is awarded another re-spin. If no new WILD symbol appears, the game round ends. Wins are calculated on the base spin and each re-spin, with the total win being the sum of all these wins. If a WILD symbol appears on a payline, the win on that line is doubled (quadrupled in the case of two WILD symbols or multiplied by x6 in the case of three WILD symbols). Re-Spin is completely free.
Mystery Symbols
If you manage to land at least one MYSTERY symbol on any of the middle reels (reels 2, 3 and 4), your win is multiplied by 1 to 15. The total number of MYSTERY wins is multiplied by the number of MYSTERY symbols on the three reels, and the total win is the sum of the individual MYSTERY wins.
Prize table
Symbol
Multiplier
3x in payline
4x in payline
Hearts
5x
10x
Diamonds
3x
6x
Spades
2x
4x
Clubs
1,5x
3x
Apples
1x
2x
Watermelon
0,75x
1,5x
Stars
0,5x
1x
Cherries
0,5x
1x
Lemons
0,25x
0,5x
Our rating of the game
81 Double
The 81 Double online slot is a great slot for players looking for a classic experience with modern elements. With a WILD symbol with a multiplier and 81 paylines, the game offers exciting and dynamic gameplay with the possibility of high wins. If you are a fan of traditional online slots without complex bonus features, but at the same time want to enjoy the possibility of multiplying your wins, 81 Double is a great choice. On the other hand, if you are looking for slots with Free Spins or a progressive jackpot, you may have to look elsewhere.
Pros
The slot machine is easy to understand, ideal for beginners and experienced players alike
A high number of lines increases the chances of more frequent wins
The WILD symbol with a multiplier multiplies winnings and if multiple WILD symbols appear in one combination, the win can be multiplied by x6
No complex animations or lags, the game runs smoothly and briskly
Simple and clear graphics inspired by traditional slots
Thanks to multipliers, you can win even with low symbols
Cons
The game does not feature any bonus rounds with bonus spins.
Wins may be less frequent, but when they do come, they tend to be bigger. This can be frustrating for players with smaller bankrolls
There is no possibility of a cumulative jackpot
May seem too plain or outdated for some players
You cannot risk your winnings in an additional betting game.
Apart from the WILD symbol with multiplier, there are no special bonus mechanics.
Due to the higher volatility and multipliers, the game can sometimes be risky for players who don't want to invest a larger bankroll.
Manufacturer Casimi
Founded in 2020 in the Czech Republic, Casimi Gaming is a rising star in iGaming, known for its unique and innovative slot games. Their TransformWays mechanic enhances gameplay transparency, giving players more control. With over 25 engaging slots, ITC and BMM certifications, and partnerships with top platforms like iSoftBet and BetConstruct, Casimi is redefining online casino entertainment.
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95%
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Software provider
Game typeSlot
Reels
Winning paylines
RTP
