Rainbow King Slot Review & Bonus

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Game information


Rainbow King









With 20 paylines and 5 reels Rainbow King is a another memorable video slots released by Novomatic. It offers a total jackpot payout of £250,000 and the average return to the player is 95%.

The developers added 3 distinct bonus games of which one is the Rainbow King Feature and a wild. Hopefully this is more than enough to wet your appetite and to get you playing. I played the game and one thing that struck me about the audio is that it mimics a slots machine found on the floor in a land-based casino.

The main character in the game is the portly Rainbow King. Rainbow King is flushed with so many colours it will make a chameleon green with envy. Symbols that appear across the reels are sparkling crowns, gems, castles, golden money bags, a treasure chest and card symbols from 10 to King.

Rainbow King Slot



Rainbow King is tailor-made for players with limited bankrolls and for those who have loads of cash. You can bet as little as $£.20 per line up to £$100. Before join the Rainbow King in his merry land of riches, select the amount of cash you wish to wager per payline and stick to it. If you’re 50% up on your current bankroll, cash out 70% and play with the rest.


Bonus Games

The game has 3 bonus rounds: Rainbow King, Cash Castle and the King Cash Features. In this section I’m going to give you an overview of each and their payouts.

  • Rainbow King: This feature is triggered when you hit 3 of the same symbols. But there’s a slight twist. You must click on or press the ‘Spin’ button. A board will pop up and you must throw a dice. There are different squares each with its own cash prize. If your dice lands on the Rainbow King square a mini slot game can be played where loads of cash can be won. Free spins are awarded, the game ends when the number 7 appears. If you land three sevens you can win as much as 500 coins.
  • Cash Castle Bonus: This feature is triggered when 3 or more castles appear any place on the reels. Here you must pick a castle to reveal your prize. This is a classic ”Pick Me’ feature. You can win as much 2 times or up to 500 times your initial stake.
  • King Cash Bonus: This is the last of the bonus games but certainly not the least. It’s activated when 3 or more Crowns appear on the second, third and fourth reels. A screen opens up that showcases 12 crowns. This is another ”Pick Me” bonus game where you must choose one crown to reveal your prize. Payout wise the King Cash Bonus can be very lucrative, here you can win up to 500 times your stake.



Rainbow King might not be a graphically rich game but it’s certainly a very colourful one. It offers a huge payout of £250,000 and a house edge of 5%. It’s not the loosest slots I’ve come across but its 3 distinct bonus games make it a winner. That said they’re not easy to trigger. If you’re patient enough and you manage to activate them you’ll hit a jackpot fit for a king.

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