Joker Rainbows

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Rules and Gameplay

Joker Rainbows is a vibrant slot game developed by Kalamba Games that takes players on an adventurous journey to Emerald Island, featuring a 6-reel, 4-row setup with 40 paylines. Players can place bets ranging from $0.20 to $75 per spin. The game boasts a high volatility rating and an RTP of 96.31%, offering a mix of frequent and significant wins. The gameplay is enhanced by colorful graphics and animations, providing a user-friendly interface and an immersive gaming experience. Joker Rainbows is accessible on various devices thanks to HTML5 technology, allowing players to enjoy the game on desktops, smartphones, and tablets.

Bonus Features

Joker Rainbows is packed with exciting bonus features that significantly increase winning chances. Key features include:

  • Wild Symbols: The Golden Joker acts as a Wild, substituting for other symbols to form winning combinations. Additionally, Multiplier Wilds can replace regular icons and increase rewards where they appear.
  • Cashpots: There are four Cashpot levels—Bronze, Silver, Gold, and Platinum—awarded when a certain number of bonus symbols appear simultaneously on the reels.
  • Free Spins: Triggered by landing three or more Bonus icons (Golden Stars), offering additional free games through Bonus Accumulator symbols.
  • HyperBet: This feature allows customization of the initial Free Spins and Wild Multiplier, enhancing the gameplay.
  • Bonus Buy: Players can purchase an instant round of free spins with up to 10x multiplier Joker Wilds, costing up to 74.5x the bet.


The symbols in Joker Rainbows slot game enrich the vibrant theme with a mix of traditional fruit motifs and special icons:

  • Lower-paying symbols: Plums, grapes, watermelons, and cherries.
  • Medium-paying symbols: Clovers, Bells, Double violet bars, and Silver Bars.
  • Higher-paying symbols: Triple Gold Bars and Sevens.
  • Special Bonus symbols: Offer 2x and 10x times the bet when landing 3 or 4 on the grid.
  • Golden Joker girl: Acts as the wild symbol with multipliers.


Symbol 3 Symbols 6 Symbols
Lower-paying (Fruits) 0.1x 1.5x
Medium-paying (Clovers, Bells, etc.) 0.1x 5x
Higher-paying (Gold Bars, Sevens) 1.25x 25x


Joker Rainbows features 40 paylines, creating ample opportunities for winning combinations across its 6×4 reel layout. The paylines contribute to the game’s high volatility, offering a blend of regular wins and the potential for massive payouts, especially when leveraging the game’s various bonus features and multipliers.

Pros & Cons

Pros Cons
High maximum win potential (up to 50,565x the bet) High volatility may not suit all players
Engaging bonus features (Free Spins, Cashpots, HyperBet, etc.) Some bonus buy features can be costly
Playable across all devices thanks to HTML5 technology Gameplay may feel similar to previous Kalamba Joker games

Minimum and Maximum Bet

The Joker Rainbows slot game caters to a wide range of players by offering a minimum bet of $0.20 and a maximum bet of $75 per spin. This flexible betting range makes it accessible for casual players looking for fun without risking much, as well as high rollers seeking to place larger bets.

Game Jackpot

Joker Rainbows offers a game jackpot with a max win potential of up to 50,565x the player’s stake. The slot operates on a high volatility basis and boasts an RTP of 96.31%, indicating a game with a higher risk but rewarding returns for the lucky ones. The combination of RTP and variance in Joker Rainbows makes it an exciting choice for players seeking thrilling gameplay with substantial payout opportunities.

About Provider

Kalamba Games is the innovative provider behind Joker Rainbows. Known for its commitment to crafting engaging and high-quality online slot games, Kalamba Games has established a reputation for integrating exciting gameplay features, vibrant graphics, and unique themes. Their dedication to enhancing the gaming experience with modern HTML5 technology ensures that all their games, including Joker Rainbows, are accessible on a variety of devices, providing a seamless and immersive gaming experience for players worldwide.

How To Play

  • Load the Joker Rainbows game on your chosen device.
  • Adjust your bet size by selecting from the minimum of $0.20 to the maximum of $75 per spin.
  • Press the spin button to start playing. You can also use the auto-play feature for continuous spins.
  • Watch for winning combinations on the 40 paylines and the appearance of special symbols (Wilds, Scatters) that trigger the game’s bonus features.
  • Utilize the HyperBet feature to customize the wild multiplier and number of free spins, if desired.
  • Engage the Buy Bonus feature if you wish to directly enter the free spins round, with options affecting the cost and potential RTP increase.


Joker Rainbows stands out as a vibrant and engaging slot game from Kalamba Games, offering a delightful blend of classic and innovative elements. With its wide betting range, high maximum win potential, and array of bonus features, it caters to various players, from beginners to seasoned veterans. The game’s high volatility and RTP reflect its potential for significant payouts, making every spin a thrilling experience. Kalamba Games continues to impress with their commitment to quality and immersive gaming experiences, making Joker Rainbows a must-try for fans of online slots.