King of Kings (Relax Gaming) Slot Review

King of Kings: Slot Overview

King of Kings is a video slot developed by Relax Gaming, released on June 4, 2019. The game draws on an Ancient Egypt theme, centering around pharaohs as monarch leaders with absolute control, religious significance, and connections to deities. Players aim to seize the throne amid pyramids, palaces, and unlimited riches. It follows a classic “book” slot gameplay style with 5 reels (expanding to 6 in free spins), 3 rows, and 5 paylines, featuring wild/scatter symbols, re-spins, free spins, and an optional jackpot feature. This high-volatility title targets risk-takers and fans of traditional Egyptian slots who enjoy chasing large payouts through expanding symbols and jackpot opportunities.

Design and Graphics

King of Kings features a backdrop of a pyramid and palms, set within an open oasis temple flanked by statues of Horus on both sides of the reels, with dunes visible in the distance. The reels are borderless, contributing to a clean aesthetic reminiscent of certain “Book of Gods” styles. The standard symbol set includes 9 icons: lower-value scarab gems in blue, green, yellow, orange, and red, alongside premium Egyptian deities—Bastet (cat goddess), Anubis (symbol of regeneration), and Horus (protector of the ruler). The top-paying standard symbol is a cartoon-style Tutankhamun, awarding 200x the stake for five on a payline. The golden Ankh serves as both wild and scatter, with subtle animations during wins and features like the Bonus Symbol Re-spin. Overall, the visuals are straightforward and thematic, prioritizing clarity over elaborate effects, suitable for a classic slot experience.

King of Kings slot – base game

Gameplay Mechanics

King of Kings employs a 5-reel, 3-row grid with 5 fixed paylines, where wins form by landing matching symbols from left to right on active lines. The base game flows with standard spins, supported by a hit frequency of 18.88%. All wild symbols function as scatters, with the golden Ankh substituting for all standard symbols and paying 2x, 20x, 200x, or 1,000x the stake for 2, 3, 4, or 5 on a payline. Premiums like Tutankhamun pay up to 200x for five-of-a-kind, while scarab gems offer lower payouts scaled accordingly.

A unique base game mechanic, the Bonus Symbol Re-Spin, activates potentially when nearing a scatter trigger (such as missing the third scatter). It awards 1 free re-spin with a randomly selected expanding symbol: three low-value symbols or two premiums cause it to expand fully across the reel. This provides base game potential up to 1,000x the stake with a full screen of Tutankhamun. An optional extra bet activates Jackpot Stars, offering chances at six progressive jackpots, including a top prize of 25,000. The game maintains high volatility (rated 10/10), emphasizing infrequent but significant wins.

Bonus Features

The slot offers three key features, enhancing its high-volatility profile. The Bonus Symbol Re-Spin triggers in the base game under specific conditions (e.g., near-miss scatters), granting 1 re-spin with a random special symbol that expands across a reel if landing three low pays or two premiums, potentially yielding up to 1,000x per spin.

Landing 3+ Ankh wild/scatters anywhere activates Free Spins, awarding 10 spins on an expanded 6-reel grid (still 3 rows, 5 paylines). A special expanding symbol is chosen at the start, behaving identically to the re-spin mechanic but with heightened potential up to 5,000x per spin due to the extra reel. Simulations show total wins exceeding 10,000x possible.

King of Kings slot – free spins

The Jackpot Stars feature requires an additional bet, introducing collectible stars for access to six jackpots, with the maximum prize at 25,000. This appeals to players seeking progressive-style rewards beyond standard play.

Betting Options and Payouts

Bets range from €0.10 to €50 per spin, accommodating casual and high-roller play, with an optional extra wager for Jackpot Stars. The RTP stands at 96.25%, paired with high volatility (10/10), resulting in a hit frequency of 18.88% and infrequent but substantial payouts. The max win is 10,409x the stake, bolstered by expanding symbols in features, though bonus round frequency and exact max win probability are not specified. Payouts favor premium symbols and expanding mechanics, with jackpots adding progressive appeal.

Conclusion

King of Kings delivers a solid, high-volatility “book” slot experience with strengths in its expanding symbol mechanics, base game re-spins, and optional jackpots up to 25,000, offering real potential for big wins like 10,409x. The 6-reel free spins expansion and 96.25% RTP add intrigue, while the Ancient Egypt theme and clear visuals suit genre enthusiasts. Weaknesses include limited paylines (5), potentially lower bonus frequency to accommodate re-spins, and a familiar formula lacking bold innovation, which may feel one-dimensional compared to more dynamic titles. Players can test the slot risk-free using the built-in demo available on this page. Overall, it provides decent thrills for high-stakes chasers but may not convert skeptics of the style.