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The Rainbow King slot machine is a 20-win line game that is beautifully designed by Novomatic. There are three exciting features in this game, including the Rainbow King. If you want to try it, you can play it online.
With a royal, fun theme featuring lots of glitz and sparkles, this game is guaranteed to keep you well-entertained for many hours. Some of the images in the game include the Rainbow King, castles, crowns, gold sacks and the A, J, Q, K and 10 characters.
Game Features
The Rainbow King is a special feature in the game, and it’s triggered once 3 or more of the Kings show up on the screen. A game board will appear as soon as the feature starts.
You must click the Start button to move across the board and earn prizes. The King’s castle has treasure chambers with diamonds.
An extra bonus round known as the Reel King Spins will start if a Rainbow King lands on the board. This feature will end, and the Reel King Spins feature will start if the reel stops on the “Take the Money” icon.
- The Reel King will show up during the Reel King spins to give a small set of reels. The prizes earned in this round depend on the combination of 7’s and the king’s reels. The feature will end if a non-seven icon appears on the reels.
- The King Cash is another feature in this game, and it’s triggered once 3 crowns land on reels 4, 3 and 2. This will allow you to choose from 12 crowns and win as much as 500x your overall bet.
There is another special feature in the Rainbow King, and this is the Cash Castle. Three or more castles will start this feature once they land on the screen. Triggering this bonus round will allow you to choose a castle to reveal your prize amount of anywhere between 2 and 500x your bet.


Alex MCasino & Slots Editor
Last Update: April 6, 2025
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