Book of Dead: the expanding-symbol slot explained
Book of Dead has been copied so many times that it practically defines the "book" genre: an Egyptian tomb, an explorer, and one symbol that works as both wild and scatter. The version you find in the 89bet lobby is easy to start and hard to read correctly, because almost everything interesting happens inside a single bonus feature. If you understand that feature before the first spin, the stake you choose will make a lot more sense.
Fact sheet
| Item | What is known |
|---|---|
| Studio | Play'n GO |
| Layout | 5 reels, 3 rows, 10 adjustable paylines |
| Published RTP | 96.21% (default setting; confirm in the game's info panel) |
| Volatility | High |
| Maximum win | 5,000x the stake |
| Features | Expanding symbol, free spins, gamble round |
What happens on a spin
You pick how many of the ten lines are active and the value per line; together they make the cost of a spin. Wins pay from left to right on active lines when matching symbols line up. The book does two jobs: it substitutes for regular symbols to complete a line, and three or more books anywhere on the screen open the free spins. Turning lines off makes a spin cheaper but also removes ways to win, which is why most players keep all ten and adjust only the value per line.
Free spins and the expanding symbol
Before the free spins begin, the game picks one regular symbol at random to become special for the whole round. Whenever that symbol lands in a paying amount, it grows to fill its entire reel and pays across every active line, even when the positions are not next to each other. This is where the large results come from: a high-paying symbol such as the explorer expanding on several reels at once is the scenario that pushes a win towards the 5,000x ceiling. Base-game wins, by contrast, tend to be small and frequent enough only to slow the drain on a balance.
Living with high volatility
High volatility means the return arrives unevenly. Expect long runs of modest or empty spins, broken by rare features that pay well — or occasionally pay little. For a bankroll the lesson is simple: if each spin is a large share of the money set aside for the session, the session can end before the feature shows up. A practical habit is to choose a stake that allows a few hundred spins with your session budget, and to decide in advance where you stop, both after a good run and after a bad one.
RTP is a setting, not a forecast
A return-to-player figure is a long-run average calculated over millions of spins. It tells you how the maths is built, not what will happen tonight. It is also common for a studio to offer several versions of one slot with different percentages, leaving the choice to the operator. That is why the number in the fact sheet is labelled as the default: the percentage that applies to you is the one shown in the game's own info panel. If the two differ, trust the panel.
Trying it in demo first
Where the lobby offers a demo version, it is the cheapest way to feel the rhythm of a high-volatility slot. Play a hundred or so demo spins and note how often anything meaningful happens; that is a better guide to a sensible real-money stake than any headline figure. Demo results are not a preview of real sessions, but the volatility you sense is genuine.
For a contrast in mechanics, compare it with Dead, Dead or Deader or Wild Bandito, or return to the full games guide. If you plan to play it with a bonus balance, read how wagering works first.