Play all Novomatic Gaminator video slots for free Play for real money at best Netent casinos

You can play this machine for real money in following Novomatic casinos: Casumo

Faust Just Jewels Deluxe Mighty Trident River Queen Supra Hot Kingdom of Legends

Rainbow King video slot

We would like to demonstrate so unusual Rainbow King video slot from Greentube which offers you to immerse into the world of excitement. In this machine there are five reels, 20 lines and four bonus games. In each of them you can derail worthy winnings. We suggest to get acquainted with the opinion of the tester. And you have the opportunity to play the demo of this slot for free and without registration on the top of this page.

Testers feedback

Rainbow King slot machine has excellent bonus features. All of them are launched with a high frequency, so you do not have to wait for triggering for a long time. Thanks to these functions, I managed to get worthy awards. Despite the low percentage of the video slot's return, winning combinations are quite common. There is no classical risk-game here. The colourful and bright design will give you a chance to relax and enjoy.

How to win


  • Number of reels - 5
  • Number of pay lines - 20
  • Rate on the line is from 0.02 to 5.00
  • Range of bet sizes is from 0.40 to 100.00
  • Maximum winning for a combination from 5 symbols – 2 500 coins
  • Wild symbol - yes (an inscription of WILD)
  • Bonus game - yes (3 bonus symbols (Corona, Lock, Rainbow King) will start the prize-winning games)
  • The expected percentage of RTP payments in the video slot is 95.00%


The main feature of the slot machine is the availability of four bonus features:

  • The Cash Castle starts when three or more Lock symbols appear. This option allows you to win from 2 to 500 total rates. You just need to choose one of the fallen castles, behind it the prize is hidden.
  • The Rainbow King. Three or more symbols of the King triggers this feature. There will be an additional screen with a chest and a dice in the middle, around which there are cells with prizes. Press the start button and the game will start. If you get to the cell with the image of the King, an additional round of Reel King Spins will be launched. If on the cell with the inscription Take The Money, the game will end. Other cells bring winnings of different sizes.
  • Reel King Spins. A mini-video slot with three reels will appear on the screen. They are spinning multi-coloured sevens, which give winnings. You can get up to 2500 credits if the game is played at the highest rate. The mini-video slot will spin until the winning combinations are dropped.
  • The King Cash starts when the Crown symbol appears on the three central reels. The crowns appear on the screen, you have to choose one. The prize may be hidden behind it - from 50 to 500 total rates.

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