Book of Admiral Slot Review
Book of Admiral is an Amatic “Book of…” slot with expanding symbols and Free Spins on 5×3 reels and 10 paylines. It’s listed at 97.05% RTP, high volatility, and up to 5,000x max win.
Check the key facts table, learn how the Book bonus selects an expanding symbol, and see why high volatility matters for bankroll planning—plus two similar Book-style slots to compare.
Key information
| Provider | Amatic Industries |
| Release date | 04 May 2022 |
| Game type | Video slot |
| RTP | 97.05% (RTP range may exist) |
| Volatility | High |
| Max win | 5,000x |
| Reels / rows | 5 / 3 |
| Paylines / ways | 10 paylines |
| Bet range | 0.10 – 100.00 (casino currency) |
| Main features | Book of… mechanic, expanding symbols, wilds, scatters, Free Spins, extra Free Spins (version-dependent) |
| Theme | Naval adventure: sea, ships, anchors, deep blue tones |
| Bonus buy | Not specified |
Amatic titles can be distributed with different RTP configurations and small rule differences across casinos. Always confirm the exact RTP and feature rules in the in-game info panel of the version you play.
What is Book of Admiral?
Book of Admiral is a classic “Book of…” style slot with a naval theme: ships, anchors, and a sea-blue palette. The core idea is simple:
trigger the Book feature, lock in a special expanding symbol, and aim for full-reel expansions that stack multiple line wins quickly.
How the Book of… mechanic works
Book-style games are usually defined by one standout feature: a bonus round where a chosen symbol can expand to cover an entire reel.
This is often the main route to the largest payouts.
- Bonus trigger: typically requires a set number of Book/Scatter symbols in one spin.
- Chosen symbol: the feature selects a symbol that becomes “special” for the bonus.
- Expanding symbols: when the chosen symbol lands, it can expand to fill the reel.
- Extra Free Spins: some versions can award extra spins if the trigger appears again during the bonus.
In Book-style slots, the bonus can pay small if expansions don’t land on multiple reels. Test demo mode first to see the bonus frequency at your preferred stake.
Wilds, scatters and payline play
Book of Admiral uses 10 fixed paylines on a 5×3 reel set. Wilds help complete line wins in the base game, while Scatters are typically responsible for triggering the feature.
Exact symbol values and trigger counts are shown in the paytable.
Volatility and max win (5,000x)
The slot is listed as high volatility, which generally means bigger wins are less frequent and session swings can be sharper.
The upside is a strong top end: up to 5,000x. In most Book-style games, reaching the highest range typically requires several expanding reels of the chosen symbol during Free Spins.
High volatility can bring long cold stretches. Use a stake that fits your budget and avoid increasing bets to chase a bonus trigger.
Who will enjoy this slot
- Fans of Book-style bonuses and expanding symbols
- Players who like naval themes (sea, ships, anchors)
- Those comfortable with high volatility swings
- Players hunting a strong but realistic ceiling (up to 5,000x)
2 similar Book-style slots to compare
| Slot | Provider | Why compare |
|---|---|---|
| Book of Ra | Novomatic | A classic reference point for Book-style pacing and expanding symbol payouts. |
| Book of Dead | Play’n GO | A modern benchmark for Book bonuses and expansion-driven win spikes. |
How we evaluate slots
- RTP transparency and version differences
- Bonus clarity (trigger rules and expansion behavior)
- Volatility vs. how often the bonus actually connects
- Max win potential and how dependent it is on rare outcomes
For safer play habits and limit tools, see our Responsible Gambling guide.
FAQ
The listed RTP is 97.05%. Some casinos may offer different RTP configurations, so confirm the value in the in-game info panel.
The feature is typically triggered by landing a required number of Book/Scatter symbols in one spin. The exact trigger count is shown in the paytable of your version.
Yes. It is listed as high volatility, which usually means bigger wins are less frequent and session swings can be sharper.
The stated maximum win is 5,000× of your stake. The biggest wins usually come from Free Spins where the selected symbol expands on multiple reels.
Game Screenshots
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