Rarestone Gaming

Book of Kings

Slots Video Slots Action & Adventure Egypt Book Tomb Raider Treasure Exploration Ancient

Egyptian book slot with a trigger-dependent bonus modifier

SlotRanker Score

/ 99

05099

The SlotRanker Score is calculated from the visible data below. It is not affected by affiliate deals, and it cannot be bought.

How this score is built

RTP

96.63%

return to player

Volatility

High volatility

variance

Max win

200×

top multiplier

Min bet

$0.10

per spin

Reels

10 lines

Player rating

3.7 ★

16 votes

DEMO Play free, no signup

Rarestone Gaming

Embed on your site

3.7 / 5

16 ratings

User ratings are shown separately from the Slot Score unless stated otherwise.

Five weighted signals shape the composite. Four context signals refine ties. See how we rate for the full methodology.

Payouts & RTP9/10

RTP 96.63% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential4.6/10

x200.00 (200×) → 4.6/10

Features7.5/10

10 features → 7.5/10

Game Mechanics5.1/10

f=10 r=5 p=10 → 5.1/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility8/10

0.1–200 (×2000) → 8.0/10

Provider Reputation6.6/10

provider avg 6.6 → 6.6/10

Popularity5/10

synthetic proxy → 5.0/10

Popularity blends real player search demand (~30 markets) with a catalogue-derived proxy; games without measurable search demand use the proxy alone. Not live play telemetry.

Cite this score

SlotRanker Score: 70 — Book of Kings by Rarestone Gaming

https://slotranker.com/rarestone-gaming/book-of-kings#score

How to cite

Slot Summary

A pharaoh's tomb supplies the treasure-hunting premise of Book of Kings from Rarestone Gaming. Its distinguishing detail is the snake attached to certain book symbols: the composition of the bonus trigger can change the value of the entire free-spins round. That makes the discovery itself part of the game's identity.

How It Plays

Base-game combinations follow fixed paylines from left to right. Both the ordinary Book and the Book and Snake can substitute for other symbols to help complete paying matches.

The books also serve as scatters, so their role extends beyond completing ordinary combinations. Collecting the required books launches the feature, with the snake-bearing version determining whether bonus wins receive an extra multiplier.

Bonus & Free Spins

Three scattered books award 10 free games. Before play begins, a regular symbol is selected for expansion; qualifying appearances fill their reels and pay in any position across the lines.

Spec sheet

Book of Kings at a glance.

Identity

Slot nameBook of Kings

StudioRarestone Gaming

Released3/13/2020

Math

SlotRanker Score70

RTP96.63%

VolatilityHigh volatility

Max win200×

Bet range$0.10 – $200.00

Player rating3.7 / 5 · 16 votes

Format

Reels5

Paylines10

Layout5x3

Features

Themes

Expected average based on this slot's 96.63% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$1.35

Cost per session$1.35

Estimate only, for entertainment purposes — treat gambling as entertainment, not a way to make money, and set a budget you can afford to lose.

How long could a bankroll last on Book of Kings? We simulate thousands of sessions from this game's published RTP and volatility — the long-run math, not a prediction of your next spin.

Bankroll ($)Bet per spin ($)Speed

Volatility tier: High

Running simulation…

How this works

Each simulated spin either misses or returns a win drawn from a log-normal distribution, with the hit rate and spread set by the slot's volatility tier (High). The model is calibrated so the average return equals this slot's published RTP (96.63%), with wins capped at its top multiplier (200×).

This is a simplified, parametric model of the game's math — not its real paytable. It exists to make the house edge visible over many sessions, so the numbers above are averages across thousands of runs, never a forecast of one.

This is math, not a prediction. Real sessions vary wildly, and no strategy changes a game's built-in house edge. Play for fun, set limits, and never bet more than you can afford to lose.

Where to play Book of Kings

No matching casinos for your region yet

Casino availability depends on where you play from. We only show casinos that accept players from your country.

Compare Book of Kings with other games

	Book of Kings Score 70This game	Treasure Temple Score 82	Book of Duat Score 75	Dawn of Kings Score 70	Cluster Tumble Score 82
Identity
Studio	Rarestone Gaming	Wizard Games	Quickspin	Hacksaw Gaming	Relax Gaming
Released	3/13/2020	10/9/2019	11/9/2021	2/23/2024	11/3/2021
Math
RTP	96.63%	96.97%	94%	96.24%	96.4%
Volatility	High volatility	High volatility	High volatility	Medium volatility	High volatility
Max win	200×	—	32,760×	10,000×	20,000×
Format
Reels	5	5	5	5	5
Layout	5x3	5x3	5x3	5x3	5x5
Paylines	10	243	10	13	8
Min bet	0.1	0.2	0.1	0.1	0.1
Max bet	200	40	100	1	50
Features
Progressive	—	✓	—	—	✓
Wild symbol	✓	—	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	✓
Multiplier	✓	—	✓	—	✓
Bonus game	—	✓	✓	—	—
Respins	—	—	—	—	—

Every number is shown as a delta against Book of Kings.

Comparing against

Book of Kings

Rarestone Gaming

RTP

96.63%

Max win

200×

Score

+ Progressive+ Bonus Game− Wild− Multiplier

Explore More Games with Similar RTP

	Provider	RTP	Volatility	Max win	Score
Pirate’s Pearl Megaways	GameArt	96.58%	High volatility	80,000×	89
Lunar Rabbit	GameArt	96.59%	High volatility	20,000×	87
Ninja Legend	Advant Play	96.6%	Medium volatility	8,000×	83
Sugar Sweets: Super Bonus	Axolotl Games	96.61%	High volatility	25,000×	85
Broadsiders	Massive Studios	96.62%	—	30,000×	86
Book of Kings	Rarestone Gaming	96.63%	High volatility	200×	70
Star Clusters 2	Big Time Gaming	96.63%	High volatility	34,500×	84
Money Farm Megaways	GameArt	96.64%	High volatility	100,000×	90
Jawsome	Massive Studios	96.65%	High volatility	50,000×	89
Huntress: Wild Vengeance	Print Studios	96.66%	High volatility	20,000×	87
Gold Panther Maxways	Spadegaming	96.67%	High volatility	—	88