Thunderspin

Book of Treasures

Slots Video Slots Aztec Action & Adventure Jungle Egypt Book Fire Crown Treasure Ancient

An ancient treasure hunt with a transforming spellbook

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

96.16%

return to player

Volatility

High volatility

variance

Max win

1,500×

top multiplier

Min bet

$0.20

per spin

Reels

243 lines

Player rating

4.8 ★

20 votes

DEMO Play free, no signup

Thunderspin

Embed on your site

4.8 / 5

20 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 96.16% → 9.0/10

Volatility9/10

high → 9.0/10

Win Potential6.4/10

x1500.00 (1500×) → 6.4/10

Features7.5/10

12 features → 7.5/10

Game Mechanics6/10

f=12 r=5 p=243 → 6.0/10

Context signals (tie-breakers)

Layout6/10

5x3 → 6.0/10

Bet Flexibility6/10

0.2–200 (×1000) → 6.0/10

Provider Reputation6.8/10

provider avg 6.8 → 6.8/10

Popularity7.5/10

synthetic proxy → 7.5/10

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: 76 — Book of Treasures by Thunderspin

https://slotranker.com/thunderspin/book-of-treasures#score

How to cite

Slot Summary

A five-reel grid doubles as an ancient treasure map in Thunderspin's Book of Treasures, where a sacred book connects the hunt for artifacts with reel-filling transformations. Its jungle expedition has a particular mechanical identity: the book can help ordinary combinations, open free spins, and turn a selected symbol into a much larger presence.

How It Plays

Matching symbols pay across consecutive reels starting from the leftmost reel. Their positions within those reels can vary, which is why the game uses ways instead of fixed line paths.

A separate book selects a symbol for the transformation feature. When that symbol appears on qualifying reels outside the middle reel, matching reels can fill with copies, creating a second evaluation of the result.

Bonus & Free Spins

Free spins can be purchased directly, and the purchase price can decrease during play. That changing price is part of the bonus access system; it does not guarantee that the purchased round will recover its cost.

Spec sheet

Book of Treasures at a glance.

Identity

Slot nameBook of Treasures

StudioThunderspin

Released5/30/2019

Math

SlotRanker Score76

RTP96.16%

VolatilityHigh volatility

Max win1,500×

Bet range$0.20 – $200.00

Player rating4.8 / 5 · 20 votes

Format

Reels5

Paylines243

Layout5x3

Expected average based on this slot's 96.16% RTP — individual sessions vary with volatility.

Bet per spin

Spins per hour400

Session length (hours)

Cost per hour$3.07

Cost per session$3.07

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 Treasures? 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 (96.16%), with wins capped at its top multiplier (1,500×).

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 Treasures

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Compare Book of Treasures with other games

	Book of Treasures Score 76This game	Pyramid of Flames Score 81	Book of Montezuma Score 73	Lucky Jane and Aztec Book Score 72	Adventure PIGGYPAYS El Dorado Score 69
Identity
Studio	Thunderspin	PlayStar	Amatic	1spin4win	SpinPlay Games
Released	5/30/2019	3/6/2024	6/12/2023	9/14/2023	3/30/2023
Math
RTP	96.16%	—	97.13%	97.07%	94.2%
Volatility	High volatility	Medium volatility	High volatility	High volatility	High volatility
Max win	1,500×	100,000×	5,000×	2,000×	20,000×
Format
Reels	5	6	5	5	5
Layout	5x3	6x5	5x3	5x3	5x3
Paylines	243	Cluster Pays	10	243	20
Min bet	0.2	—	0.1	0.1	0.2
Max bet	200	—	100	50	12
Features
Progressive	—	—	—	—	—
Wild symbol	✓	—	✓	✓	✓
Free spins	✓	✓	✓	✓	✓
Scatter symbol	✓	✓	✓	✓	—
Multiplier	—	✓	—	—	✓
Bonus game	—	—	—	—	—
Respins	—	✓	—	—	—

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

Comparing against

Book of Treasures

Thunderspin

RTP

96.16%

Max win

1,500×

Score

+ Multiplier+ Respins− Wild

Lucky Jane and Aztec Book

Adventure PIGGYPAYS El Dorado

+ Multiplier− Scatter

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