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Joker Rainbows slot: free demo, RTP and max win

A slot by Kalamba Games

Joker Rainbows is a Kalamba Games slot on a 6x4 layout with 40 paylines, released in April 2023. It runs at a 94% RTP with high volatility. Its notable max win is capped at…

Studio Kalamba Games 253 games on Velatonmies

Kalamba Games is an online casino game studio founded in 2016, with offices in Malta and Krakow, Poland. It develops slot games and casino content, holding licenses from authorities such as the Malta Gaming Authority and the UK Gambling Commission. The company's games often incorporate proprietary mechanics like HyperBet and HyperBonus.

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40x deposit in 7 days, max €50 bet counted, slots 100% / live 20%

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Where to play Joker Rainbows in September 2026

The casinos at the top of our list right now, each one opened, funded and cashed out in our own testing.
New

Betpanda.io

4.0/5
Welcome offer 100% up to 1 BTC Bounty bonus: clear 40x first, paid as cash
Min deposit
€10 or crypto equivalent
Withdrawal
Instant to 5 min (crypto); on-chain confirmation adds 10-60 min
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40x deposit in 7 days, max €50 bet counted, slots 100% / live 20%
1

Thunderpick

4.0/5
Welcome offer Esports bonus at 10x, casino bonus at 40x The two offers are not the same deal
Min deposit
€20 for the casino offer, about €19.30 for esports; card purchases from $50
Withdrawal
Instant, no internal fees
+1
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The esports welcome bonus carries 10x wagering on deposit plus bonus with a minimum deposit of about €19.30. The casino welcome bonus carries 40x wagering with a €20 minimum deposit. Thunderpick may apply a minimum 5x wagering on deposits where it suspects the account is being used to move funds rather than to play.
1

Roobet

4.0/5
Welcome offer RooWards rakeback with no wagering Ongoing rewards instead of a deposit match
Min deposit
No fixed minimum; promotions need about $10
Withdrawal
Crypto in about an hour
Play now Roobet review
RooWards is a rakeback programme paid on play volume and carries no wagering requirement. Where a welcome offer is available it runs at 40x wagering. Promotions generally require a deposit of about $10 equivalent.

Joker Rainbows is a Kalamba Games slot on a 6×4 layout with 40 paylines, released in April 2023. It runs at a 94% RTP with high volatility. Its notable max win is capped at 50,565x the stake.

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Bounty bonus: clear 40x first, paid as cash

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40x deposit in 7 days, max €50 bet counted, slots 100% / live 20%