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Joker Rainbows Slot - Review, Free & Demo Play

Kalamba Games launched Joker Rainbows on 06/04/2023 as their latest video slot. This game sustains a 6x4 layout while offering 4 jackpots and free spins. Slotsjudge experts have tested the gameplay mechanics & betting options within this video slot. Information regarding the return-to-player percentage, volatility, and payouts are outlined throughout this review. All information has been verified by Slotsjudge experts.

Joker Rainbows Free Play

Joker Rainbows logo
Kalamba Games Release Date: 06.04.2023
Rating by Joe Booth
User’s Rating:
Joker Rainbows
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Slotsjudge has outlined various real-money casinos that provide registered members with Joker Rainbows for real money. Each betting establishment spotlighted by Slotsjudge has been tested & verified for its credibility. Additionally, these casinos are ranked amongst the best for real-money wagers. That’s because these betting sites offer promotions to registered members, including our experts at Slotsjudge. Accessibility to these bonuses allows for optimised bankrolls, meaning real-money wagers are easier to manage. Please find out how these promotions will optimise your bankroll by visiting our best casinos.

General information about Joker Rainbows slot

Release Date:
Max. win:
Bonus game:
Free spins:
Scatter Symbol:
Wild symbol:
Symbol Stacked:
Jackpot Game:
Slot lines:
Slot reels:
Stakes range (€/£/$):
0.2 to 75
Slot Theme:

How to Play

Located below is a four-step guide to experience Joker Rainbows.

  1. Select Joker Rainbows from your preferred casino
  2. Review the rules for wagering & payout options
  3. Determine the amount that’ll be wagered during the playthrough
  4. Click the “Spin” button or select Autoplay to begin wagering

Betting options begin at €0.20 in Joker Rainbows. That amount can be increased to the maximum bet of €75.00 per spin. You’ll have to alternate between the betting levels to change wagers in Joker Rainbows, as the wagering options coincide with multiplier & free spin bonus rounds.

Joker Rainbows RTP and Volatility

The RTP of this slot is variable and reaches 96.97%, while volatility is very high.

Highly volatile describes Joker Rainbows, as this slot machine provides bonus rounds & jackpots. The RTP varies between 92.96% to 96.97%, with the amount changing based on which HyperBet or BuyBonus level is selected. There are minor inconsistencies between these RTPs and the math models. Despite that, everything feels balanced as payouts are triggered regardless of their row position. Symbols are matched from left to right, with there being forty different payline combinations available. The volatile betting requirements become intermixed with numerous payout opportunities, leading to balanced results with the gameplay and RTP.


Joker Rainbows

Unfortunately, the theming associated with Joker Rainbows is outdated. Visually speaking, Kalamba Games could’ve done more to make an exciting & enthralling environment for competitors. Our experts were surprised by the minimal background and classic symbols, as slot machines typically require more in the modern era.

Despite the lacklustre theme and graphics with Joker Rainbows, Slotsjudge experts were pleasantly surprised by the gameplay. It reminded us of the classic slot era, where straightforward betting was more important than flashy effects. Kalamba Games took the same approach with the sounds & paytable, meaning there are distinctive characteristics associated with Joker Rainbows.

Three bonus symbols are utilised throughout Joker Rainbows. These symbols have a minimal effect within the base game, with their purpose being to trigger bonus features like free spins or multipliers. These symbols are portrayed as golden stars, roulette chips, and female jokers. Additionally, there is a wild substitute displayed as a flaming seven. Our experts triggered these symbols multiple times when playing Joker Rainbows and found that the Wild substitute was consistent in its payout margins. Otherwise, the remaining symbols in this video slot are positioned for the base game.

Thirteen symbols are introduced throughout Joker Rainbows. This includes the Golden Bell, Four Leaf Clover, Watermelon, Grapes, Plum, Cherries, Flaming Seven, Golden Bars, Silver Bars, and Purple Bars.

Joker Rainbows slot paytable

Mobile Compatibility

Joker Rainbows slot mobile

Kalamba Games has developed Joker Rainbows in HTML5. This enables mobile compatibility with smartphones & tablets that operate under the iOS or Android platforms. You can access this video slot through smartphone browsers like Safari and Chrome. However, the betting establishments recommended throughout this guide offer mobile applications for download.

Accessibility of Joker Rainbows isn’t limited to browsers, as Slotsjudge experts have tested. It’s possible to experience this video slot from multiple casinos with modern devices. Anyone with iOS 8/Android 6.0 cannot access this video slot from their smartphone. These versions of the software are considered outdated. We recommend using Apple iOS 13 or Android OS 13.

About Kalamba Games

Considered the next-generation supplier of B2B gambling products, Kalamba Games has been developing video slots since launching in 2016. They’ve created international studios based in Malta and Krakow, with each subsidiary focused on developing the best gaming products possible for real-money wagers. They’ve also focused on social casino markets by developing remote gaming services. These remote services have garnered Kalamba Games various awards, as 300+ brands have utilised the Kalamba RGS.

Since establishing itself in 2016, Kalamba Games has driven engagement amongst players by creating dynamic video slots with suspenseful bonus rounds. Moreover, this engagement has been driven by Kalamba developing long-term partnerships with prominent brands across the international gambling industry. As Kalamba Games continues to approach the future, they’ve expressed excitement towards upcoming challenges. Alex Cohen, the Co-Founder of Kalamba Games, is confident that they’ll deliver on their goals time & time again.

Bonus Rounds & Free Spins


As previously mentioned, three bonus symbols are introduced in Joker Rainbows. Those include the Golden Stars, Cashpot Roulette Chips, and Female Joker. Each symbol maintains the task of leading players towards bonus features like free spins or multipliers. Information regarding these bonus features is identified below.

Golden Free Spins

Free spins are triggered when 3 or more golden star symbols appear. You’ll be provided with 4 gameplay options when activating this bonus round. Those include 12 free spins with a 10x multiplier, 9 free spins with a 3x multiplier, 7 free spins with a 2x multiplier, and 5 free spins with a 1x multiplier. You can retrigger an additional 3x bonus spins by accumulating 3 golden star symbols.

It’s noted that wagering requirements change based on your free spins selection. We recommend you consider this before choosing which free spins level is best.

Joker Rainbows slot free spin

HyperBet Feature

Kalamba Games has added the HyperBet feature to Joker Rainbows. Slotsjudge experts were pleased with this decision, as the overall outcome of their play was improved by the HyperBet feature. Why? Because you can change the value of multiplier Wilds & alternate how many free spins will be won when triggered.

Cashpot Jackpot

This feature allows competitors to trigger the jackpots within Joker Rainbows. Our experts at Slotsjudge couldn’t trigger the jackpot. But that doesn’t mean the tides won’t turn for you. As such, players sustaining anywhere from 5 to 15 cashpot roulette chips will trigger a jackpot. Four variations of the cashpot roulette chips can be seen. Those include bronze, silver, gold, or platinum chip. These roulette chips correlate with the jackpots and their valuation.

Other jackpot slots that we recommend:

Joker Rainbows Demo Play

Kalamba Games has introduced a demo mode for Joker Rainbows. We have tested this video slot's free-to-play version and found the gameplay remains consistent amongst both variants. You’ll encounter the same experience when regarding bonus features, payouts, and betting options. But withdrawals aren’t authorised with any payouts won through the Joker Rainbows. Anyone interested can test the demo mode for Joker Rainbows with Slotsjudge.

Max Win


The top win in this slot is amazing 50,000x your bet!

As previously highlighted, there are 4 jackpots available in Joker Returns. These jackpots change in valuation based on how much is being wagered. Therefore, implementing the maximum bet of €75 is required to trigger the ultimate win. Triggering a platinum jackpot would’ve resulted in the maximum prize of 50,000x.

Joker Rainbows Video Review

Joker Rainbows Slot Review | Free Play video preview
✅ Try this slot for free on our website - https://slotsjudge.com/online-slots/joker-rainbows/\n\nHi everyone! In this video we’ll show you bonus game in Joker Rainbows from Kalamba Games. The slot machine has average volatility and RTP of 97.0%. The playing field consists of 6 reels and 4 rows, the minimum bet starts with $0.2, and the maximum bet reaches $75. By the way, the maximum winnings are 50,000x of the bet size.The main features of the machine are Free spins, Scatter Symbol and Jackpot Game.\n\nWrite in the comments, have you played Joker Rainbows from Kalamba Games and how do you like the winnings presented in this video!\n\nNo links used during live stream or in the description are transaction links.\n18+ | Play Responsibly | Begambleaware.org.\n\n#slots #onlinecasino #bigwin

Overall Rating


Kalamba Games has developed a unique slot with Joker Rainbows. The merging of classic themes, valuable jackpots, and modern gameplay has made this online slot feel distinctive from the competition. Our preferred moments arrived when triggering the free spins & multipliers. We didn’t get a chance at winning the jackpot. Firsthand accounts from other players have suggested that the excitement of winning the platinum jackpot is overwhelming. We hope our readers will stand amongst the players with firsthand accounts of winning. With the information you’ve learned about Joker Rainbows, anything is possible.

Four jackpots can be triggered during the base game
Bonus multipliers of 1x–10x
HyperBet and BuyBonus
Sound effects are dated
Outdated theme & symbols
Bonus features can be costly
Betting levels are confusing for beginners

Joker Rainbows Slot - FAQ

Are deposits required to play Joker Rainbows?

Funding an account isn’t needed to participate in Joker Rainbows. Demo modes are supported through Slotsjudge.

What’s the highest-ranked symbol in Joker Rainbows?

Female jokers are considered the highest-ranked symbol in Joker Rainbows.

What’s the Return-to-Player percentage with Joker Rainbows?

The RTP with Joker Rainbows changes based on the wagers being made and chosen features. As such, RTPs can vary between 92.96% to 96.31%.

Can I withdraw the payouts that I’ve won with Joker Rainbows?

Withdrawing prizes from Joker Rainbows is possible when wagering for real money. You’ll need to select an online casino for playability, make a deposit, start betting, and withdraw any winnings from a preferred payment provider. Slotsjudge has recommended an assortment of casinos to our readers.

How many jackpots are available with Joker Rainbows?

Four jackpots are developed into Joker Rainbows. These jackpots include the Bronze, Silver, Gold, and Platinum jackpots.

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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 1 reviews

Gonzita_is_here own avatar
6 lvl Superstar
Winning:: €64
Multiplier: x148
Highly recommend this slot as it is a new-generation classic! I was pleased that each gambler can choose a bet for themselves, which affects the spin and the multiplier. I chose a bet of €0.43 per spin and opened free spins literally from 3 spins, in which I took €31.88. But I decided to launch the Gamble game and won €63.76 (148x). I highly recommend Joker Rainbows!!!!