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King of Kings

King of Kings is taking you on a reel journey to ancient Egypt for an encounter with the mighty Pharaoh himself. Explore the pyramid chambers with bonus respins as well as a free spins round with expanding symbols for wins of up to 5,000 times your bet in the main game. Activate the Jackpot Stars side game and you could win up to 12,500x the side bet, which is added to any line wins.

The title of the slot from Relax Gaming seems to imply that this is the “Book of all Books” slot, the holy grail of games with the expanding symbol mechanic in the free spins. In their quest for that coveted trophy, Relax Gaming ironically halved the pay lines to five which is unexpected and increased the volatility from very high to sky-high. They also gave it an extra feature in the base game that separates it from most other “Book of…” slots as well as a sixth reel in the free spins. Sounds interesting enough? Let’s take a closer look.

Slot Details

Kings of Kings is a video slot with five reels, three rows and 5 fixed pay lines. During the free spins feature, a sixth reel is added on the right that will increase the win potential. You can explore the Pharaoh’s pyramid on desktop, mobile and tablet from 0.10 to 50 credits. Activating the Jackpot Stars side game will add 0.10 to 2.00 credits to your bet size. The RTP of this highly volatile game is set at 96.25% for the standard game and 96% for the side game.

Graphics and Visuals

An open temple in a desert oasis with a majestic pyramid in the distance serves as the backdrop to an intricate game window. Flanked by two Horus statues, it impresses with HD graphics and stunning animations. As expected from an Egyptian themed slot, gods and the Pharaoh feature prominently on the reels while a dramatic soundtrack adds more suspense to the gameplay.

Pay Symbols

The pay symbols start at the low end with blue, green, yellow, orange and red scarab gems, paying 10x to 20x your bet for a five of a kind and 40x to 100x your bet for a six of a kind. They are followed by the cat goddess Bastet as well as Anubis, Horus and Tutankhamun. Hitting five or six on a pay line will award 60x to 200x and 200x to 1,000x your stake respectively.

An intricate golden Ankh cross is the wild and scatter symbol. It is also the top-paying symbol with 1,000x for a five of a kind and 2,000x for a six of a kind. You will need to hit at least three to trigger the free spins.

The Random Bonus Symbol Respin

A teaser spin with just two scatters can turn into a mega win on the King of Kings slot. The feature will trigger randomly after any potential line wins are paid and will award one free spin. One pay symbol, excluding the wild, will be randomly selected as the special symbol and the same expanding mechanic applied as in the free spins. However, the game window will not increase to six reels, limiting the maximum win from the feature to 1,000x your bet when Tutankhamun is selected and then lands on all five reels.

The King of Kings Free Spins Feature

Hit minimum three scatters anywhere on the reels to trigger 10 free spins, which can be re-triggered indefinitely. Retriggering the free spins with minimum three scatters will upgrade the special symbol, providing a higher win potential. Additionally, two scatters in a free spin will award +1 free spin on each occasion.

Two things will happen before the bonus round starts. First, the game window expands to six reels, followed by the random selection of one of the nine regular pay symbols as the special symbol for the round. When sufficient land on a free spin, they will expand vertically to cover the entire reel and award wins for all five pay lines, which are added to any potential line wins. It will need minimum three low-paying symbols or minimum two premium symbols anywhere on the screen to see them expand and award a win.

The Jackpot Stars Side Game

At any time in the base game, you may activate the Jackpot Stars side game where you can win up to 12,500 times the amount of the side bet. There are five levels with increasing bet sizes and jackpot prizes. The side bet is a fixed amount that will be added to your main game bet. The available bet sizes for the side game are 0.10, 0.20, 0.50. 1.00 and 2.00 credits. In turn, the maximum wins for each level are 1,000, 2,000, 5,000, 10,000 and 25,000 credits. The lowest win is 25x your bet when you hit just one red ball on reel one.

The Jackpot Stars side game can trigger randomly after any spin in the base game. An icon with three stars appears and lighting up all three of them will take you to the side game screen. The game is basically a ladder-like 6-reel slot with increasing rows and prizes from left to right.

There are only red balls and blanks on the reels and your aim will be to fill the reels with red balls, which will become sticky once they land. The game continues to spin as long as you have more red balls landing and you completed one reel in the previous spin. If you fail to complete a reel, then the slot will randomly award another respin or end the side game. You will win the prize of the highest consecutive completed reel, counting from the left.

Our Verdict

So, is King of Kings the holy grail of “book” slots? It surely is an interesting concept and together with the side game, it should attract the fans of high-volatility games. While there is not much new or different compared to other “Book of …” slots, the respin feature in the base game is a nice touch as it can lead by itself to mega wins on a single spin.

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