One symbol, ten spins, all the variance you'll ever need.
Book of Dead Strategy: The Expanding Symbol Explained

The short answer
Book of Dead is a 10-line Play'n GO classic where 3+ book scatters trigger 10 free spins with one random expanding symbol — it expands to cover reels and pays on all lines regardless of position. The whole game is that one mechanic; strategy is surviving the high-volatility base game until the free spins hit, and treating the 50/50 gamble feature as what it is: doubling or nothing with the same edge.
In this article
Book of Dead is the defining 'book slot' — the template a hundred imitators follow. Ten lines, an explorer theme, and a single feature: 10 free spins where one randomly chosen symbol expands to cover its reel and pays scattered across all lines. Simple on paper; savage in practice.
Why the expanding symbol is everything
The chosen symbol expands AFTER normal pays and pays on all 10 lines no matter where the reels land — three expanded mid symbols can pay more than a normal five-of-a-kind. Which symbol gets picked matters enormously: Rich Wilde (top symbol) expanding across all five reels hits the 5,000x cap; a low royal expanding pays well but modestly. The feature's variance is the symbol draw itself.
- Retriggers add 10 spins AND a second expanding symbol — double-expanded screens are where the famous screenshots come from.
- Only 10 paylines means the base game is sparse: few hit combinations, long dead patches, most of the RTP parked in the feature.
- The gamble feature (red/black, 2x or quadruple) is a zero-edge double-or-nothing on the win — it doesn't improve the spin's math, it just lets you torch a win faster.
Playing it without fooling yourself
High volatility plus a 10-line base game means dead sessions are the default. Size for 300+ spins, expect the free spins to carry the session, and accept that the symbol draw inside the bonus is a second lottery on top of the trigger itself. Book of Dead doesn't reward cleverness — it rewards still being seated when the book opens.


