Slot
The Book of Amaterasu (Mascot Gaming): how the game works
With The Book of Amaterasu, Mascot Gaming combines East Asian imagery and prosperity symbols with a grid of 5 reels and 3 rows and 10 fixed paylines. Most of the action comes from an expanding special symbol, free spins and mystery symbols. Below you will find a plain explanation of the rules, the bonus flow and the rhythm of play, without hype and without numbers that are not documented.
Key facts
- Provider
- Mascot Gaming
- Game type
- Slot
Grid and pay model
The base game of The Book of Amaterasu runs on 5 reels and 3 rows and 10 fixed paylines. That geometry sets the pace: each spin is quick to read, combinations are easy to spot and the paytable inside the game shows the value of every symbol for the chosen bet.
Reading the paytable
Before the first spin of The Book of Amaterasu it is worth opening the paytable once. It shows the value of every symbol for the selected stake, which symbols act as wild or scatter and how each feature is triggered. Values update when the bet changes, so the screen is always a reliable reference during the session.
The expanding special symbol
Before the bonus starts, The Book of Amaterasu selects a special symbol. When it lands in enough positions to pay, it expands to cover the whole reel and pays across the active lines, even on non-adjacent reels. It is the classic book mechanic and the main source of big bonus outcomes.
Free spins
In The Book of Amaterasu the free spins round is the core of the bonus. It is triggered by the symbols described in the paytable and plays out without new stakes, usually with an extra rule that makes spins more valuable than in the base game. Much of the game's potential is concentrated in this round.
Mystery symbols
Mystery symbols in The Book of Amaterasu land covered and then reveal the same symbol all at once. When several of them show a high-value symbol, they can complete lines across the whole grid in a single reveal.
The gamble option
After a win in The Book of Amaterasu the player can choose to gamble it, for example on a card colour or a ladder, or simply collect. A wrong guess loses the prize, so the option is purely optional and best decided before the session starts.
Theme and atmosphere
The visual side of The Book of Amaterasu is built around East Asian imagery and prosperity symbols. Symbols, sounds and animations follow that theme closely, while the interface stays clean: bet controls, autoplay and the paytable are always one tap away. The look makes the game easy to recognise in a lobby.
Volatility and session rhythm
The Book of Amaterasu is a high volatility slot: many spins pay little or nothing, and the larger outcomes are concentrated in the features. The documented maximum win is 5,550x the stake. A fixed budget and a clear stopping point work better than chasing a feature.
On mobile and desktop
The interface of The Book of Amaterasu adapts to portrait and landscape screens. Bet selection, autoplay and sound settings sit in a compact menu, which keeps the reels in view even on small phones.
FAQ
What is the layout of The Book of Amaterasu?
The Book of Amaterasu uses 5 reels and 3 rows with 10 fixed paylines.
What are the main features of The Book of Amaterasu?
The official feature list includes: Book Wild Scatter, Free Spins, Special Expanding Symbol, Mystery Symbol, Additional Free Spins, Risk Game.
How volatile is The Book of Amaterasu?
The Book of Amaterasu is a high volatility slot: many spins pay little or nothing, and the larger outcomes are concentrated in the features.
What is the maximum win in The Book of Amaterasu?
The documented maximum win is 5,550x the stake.
Source and last update: 2026-10-26
Mechanics from the studio’s game information; figures such as RTP are shown only with a source.