Joker Rainbows Slot - Review, Demo, Casinos, Bonuses

Joker Rainbows is a 6x4 classic-styled slot game from developer Kalamba Games, where you can win over 50,000x the bet via multiplier wilds, free spins, and four different jackpots. Play the Joker Rainbows slot demo for free, read a review, and claim a bonus!

Play Demo for free

I confirm that I am over 21.

Integrate demo game

User Rating: 7.7/10 (3 votes)

Provider:Kalamba Games
RTP 🔗: 94% RTP Ranges!
Variance: High
Max Win: x50565.00
Betways: 40
Release Date: 2023-04-06
SlotRank: N/A
All attributes >

Online Casinos where you can play Joker Rainbows

We have scanned 5 casinos in US New Jersey, and we have not found Joker Rainbows on any of them at the current moment. Do not hesitate to check our top casinos in US New Jersey:

Joker Rainbows slot Big Win April 2023

Players keep hunting for the tasty jackpots of the Joker Rainbows slot, and the most fortunate ones actually manage to put their hand on these, like the lucky devil who reached the game's maximum win on April, 28. Betting only €0.2 per spin, the gambler won an unbelievable €10,000!


As 3 Scatter symbols landed, 5 Free Spins were awarded to the player.


On spin 4, 15 Cashpot symbols hit on the reels and brought a Platinum reward of €10,000!


On the next and final spin, a Bronze Cashpot was also achieved, and total free spins win made €10,006.52.

See All Biggest Win Catalog

Joker Rainbows Review

Joker Rainbows is yet another addition to the classic-styled collection of games by Kalamba Games. As always, there’s a lot lurking beneath the modest appearance, as the slot comes packed with powerful modern extras including multipliers, free spins, and several different jackpots.

Those familiar with previous slots in Kalamba’s joker series won’t find anything new here in terms of the outer look. Joker Rainbows barely differs from its predecessors, making use of the same simple background image and familiar classic symbols. Still, it doesn’t look bad. Instead, the game is quite pleasing to the eye with its sharp graphics and plenty of smooth animations. Yet, the level of originality leaves much to be desired.

Joker Rainbows Slot - Reel Screen

The Joker Rainbows slot plays out across a large 6-reel, 4-row setup, producing 40 ways to play on each spin, and bets from £0.1 to £75 per spin are accepted. The betting menu, however, deserves a special mention. Four different levels of HyperBet are available, and the chosen level affects some of the features, namely the values of Multiplier Wilds and the number of initial free games when the bonus is won, explained below:

HyperBet Level Wild Multiplier Initial Free Spins Qty
Blue 1x 5
Green 2x 7
Orange 3x 9
Red 10x 12

The selected HyperBet levels also affect the RTP, and we should say pretty significantly. For instance, the payback is only 92.96% when playing on level 1, while switching to level 4 boosts the value to 96.31%. The Joker Rainbows slot is powered by a highly-volatile math model, rated 10 out of 10 by the developers. Fortunately, the hit frequency isn’t that brutal and wins should occur fairly often. Anyway, the top prize of 50,565x the stake is certainly worth the risk involved.

Three or more matching symbols landing adjacently on the reels create a winning combo, and there are 10 different regular symbols included. They are in ascending order cherries, plums, grapes, watermelons, clovers, and bells at the lower side, and bars, double bars, triple bars, and red lucky sevens at the higher.

Joker Rainbows Slot Features

Symbols of the joker are Wilds, which act as substitutes for any other regular symbols, helping you out with scoring payouts both in the base game and free spins. As alluded to above, Wild symbols can appear with different Multiplier values attached to them. When a Multiplier Wild takes part in a winning combination, that payout is multiplied by the corresponding value. Unfortunately, if two or more Wild symbols participate in a win, their values are not combined and the win is multiplied only once. Wild symbols are only available on reels 2-6.

Joker Rainbows also offers players to win different fixed jackpot prizes, called Cashpots. There are four Cashpot levels available, awarded when a certain number of bonus symbols appears simultaneously anywhere on the four middle reels:

  • 5 bonus symbols - award Bronze Cashpot prize.
  • 10 bonus symbols - award Silver Cashpot prize.
  • 12 bonus symbols - award Gold Cashpot prize.
  • 15 bonus symbols - award Platinum Cashpot prize.

Look out for symbols of stars during the base game, which can appear on any of the reels. They are Scatters, and when at least 3 instances land on a single spin, the Free Spins feature is activated. We’ve already mentioned that the number of initial free spins is dependent on the chosen HyperBet level.

Joker Rainbows Slot - Free Spins

The free games bonus operates in a similar way to the base game and offers all the same features, including Multiplier Wilds and Cashpots. It’s also possible to extend the bonus game. Each Scatter symbol appearing anywhere in view is added to the special Bonus Accumulation Meter, and each three collected Scatter symbols awards +3 additional free spins, no limits.

Finally, players can activate the free games immediately via the Buy Bonus feature. Four different options are available, corresponding to the four levels of HyperBet. Keep in mind that accessing free spins via the Buy Bonus slightly increases the RTP value.

Review Summary

To conclude, Joker Rainbows is a fun addition to the vast range of Kalamba Games’ fruit-styled slots. It would definitely appeal to those who enjoyed past releases, as well as it’s a perfect option to get acquainted with the series.


  • Wild Multipliers up to 10x
  • Free Spins with unlimited retriggers
  • Four different jackpots
  • Mouthwatering max win of over 50,000x the bet


  • RTP dependent on the bet level
  • Might be too volatile for some players

Video and Image gallery

Joker Rainbows. Joker Rainbows slot
Joker Rainbows
Start Screen. Joker Rainbows slot
Start Screen
Game Screen. Joker Rainbows slot
Game Screen
Win Screen. Joker Rainbows slot
Win Screen
Win Screen 2. Joker Rainbows slot
Win Screen 2
Win Screen 3. Joker Rainbows slot
Win Screen 3
Win Screen 4. Joker Rainbows slot
Win Screen 4
Win Screen 5. Joker Rainbows slot
Win Screen 5
Buy Feature Screen. Joker Rainbows slot
Buy Feature Screen

Comments (0)

No comments so far, login to write the first one!

Joker Rainbows Slot FAQs

What is the RTP of the Joker Rainbows slot?

The game has RTP ranges, so the payback values can be different depending on where you play. Additionally, the return percentage depends on the chosen bet level. Read more about RTP here.

How volatile is the Joker Rainbows slot?

The slot is powered by a highly-volatile math model.

What is the maximum win of the Joker Rainbows slot?

The maximum you can win from a single spin is 50,565x the bet.

What features are there in the Joker Rainbows slot?

The slot features Multiplier Wild symbols, Free Spins, and four different jackpots.

Is the Joker Rainbows slot available on mobile devices?

It's compatible with all known devices, including PCs, tablets, and smartphones under the operation of either Windows, macOS, iOS, or Android.

Where can I play the Joker Rainbows slot for real money?

Check out the best casino list for this slot we prepared for you, and don't forget to claim a welcome bonus to start your session on a good note.

Can I play the Joker Rainbows slot for free?

Sure you can. You can play the free demo here at SlotCatalog.

Joker Rainbows
has RTP ranges!

Show possible RTP values

Scanned Countries

US New Jersey

Sorry, Joker Rainbows is not available for this market. In total, we scanned casinos at 53 in various markets. Joker Rainbows is available in 36 countries. The markets with the highest number of casinos are: FI, NO, CA, NZ

Country Scanned [i] With Game [i] In Lobby [i] SlotRank [i] Action
Finland FI 424 67 1 1542 See Data
Norway NO 352 62 0 7889 See Data
Canada CA 415 50 0 6801 See Data
New Zealand NZ 291 46 0 7355 See Data

Show All Countries (36)

Joker Rainbows Attributes

Provider: Kalamba Games
Release Date: 2023-04-06
Type: Video Slots
RTP: 94% RTP Ranges!
Variance: High
Hit Frequency: 17.1
Max Win: x50565.00
Min bet $, €, £: 0.2
Max bet $, €, £: 75
Layout: 6-4
Betways: 40
Features: 9 Pots (9 Masks) of Gold Mechanics, Additional Free Spins, Bonus Bet, Bonus symbols, Buffalo Mechanics, Buy Feature, FreeSpins, Gamble, Multiplier, Risk/Gamble (Double) game, RTP range, Scatter symbols, Symbols collection (Energy), Wild, Wilds with multipliers
Theme: Fruit theme
Objects: Bell
Genre: N/A
Other tags: Blue, Joker, Clover, Cherry, Fruit, Grapes, Plum, Watermelon
Technology: JS, HTML5
Game Size: 21.1 MB
Last Update: 2023-05-23

ajax loader