Book of Tribes Extreme
Travel back in time to the Aztec era in Book of Tribes Extreme, a 6-reel slot released by Spinomenal in April 2025. In our Book of Tribes Extreme review, we will reveal the most important details about this new slot — the payouts, bonuses, and more...
Reviewed by A. Lynch
·
Updated: 2026-04-15
| Provider | Spinomenal |
| RTP | 96.01% (varies) |
| Volatility | High |
| Reels | 6 × 3 |
| Paylines | 10 |
| Max Win | Up to 10,000x |
| Bet Range | £0.1 – £100 |
| Themes | aztec |
| Released | 2025-04-07 |
| Technology | HTML5 |
| Updated | 2026-04-15 |
- RTP: 96.01% (varies)
- Volatility: High
- Max Win: Up to 10,000x
- Provider: Spinomenal
- Reels: 6 × 3
- Best Casino: SpinGenie (9.30/10)
Where to Play Book of Tribes Extreme
Book of Tribes Extreme RTP and Wagering
In Book of Tribes Extreme, the gameplay unfolds across a 6x3 grid with 10 fixed paylines. You need to land matching symbols on a payline to win cash prizes: medium symbols pay out for two or more, while low symbols pay out for at least three.
Book of Tribes Extreme’s theoretical Return to Player (RTP) is 96.01%, which is around average for a slot game, and bets range from £0.10 to £100.00 per spin. Given the high volatility, payouts can be infrequent but generous — land 6 Chief symbols to win 10,000x your stake.
Book of Tribes Extreme Symbols and Audio & Video Design
Book of Tribes Extreme takes you deep into a dark and mysterious jungle, with a massive temple looming in the distance. Winding steps lead up to the temple, with small fires burning here and there to light the way. There are no background animations to bring the setting to life, but the level of detail is still impressive.
Atmospheric music plays throughout, featuring drumbeats and a slightly ominous sound that fits the Aztec theme well. Some of the symbols have a more obvious connection to Aztec civilization than others, such as the Chief in his traditional headdress. Classic royals appear as low symbols.
The Chief is the most valuable symbol: it pays up to 10,000x your bet (the biggest payout in the game). The titular Book of Tribes is both the Wild and Scatter symbol.
- 10, Jack, Queen: 3 — 5x bet / 4 — 25x bet / 5 — 100x bet / 6 — 200x bet
- King, Ace: 3 — 5x bet / 4 — 40x bet / 5 — 150x bet / 6 — 300x bet
- Book of Tribes (Wild and Scatter): 3 — 2x bet / 4 — 25x bet / 5 — 250x bet / 6 — 500x bet
- Crow, Jaguar: 2 — 5x bet / 3 — 30x bet / 4 — 100x bet / 5 — 750x bet / 6 — 1,500x bet
- Female: 2 — 5x bet / 3 — 40x bet / 4 — 400x bet / 5 — 2,000x bet / 6 — 4,000x bet
- Chief: 2 — 10x bet / 3 — 100x bet / 4 — 1,000x bet / 5 — 5,000x bet / 6 — 10,000x bet
Book of Tribes Extreme Mobile Features
Book of Tribes was developed to run on desktop and mobile devices with the same smooth performance across platforms. Book of Tribes Extreme responds to different devices and screens to provide a user-friendly experience on all devices. Whether you play on a phone or tablet, you can expect the same simple controls and sharp graphics.
Book of Tribes Extreme Bonus Features
Book of Tribes Extreme includes one bonus feature: a free spins round with a random expanding symbol.
Wild and Scatter Symbol
The Book of Tribes symbol is the Wild and Scatter. Not only does it substitute for any other symbol, but it pays out for three or more anywhere on the reels.
Free Spins Feature
Match 3 or more Wild Scatters to win 10 free spins. At the start of each free spin, one standard symbol is picked at random to become the expanding symbol (for the current spin only).
It is possible to fill the reels with the same symbol, but expanding symbols will only expand when they can create a winning combination. Crucially, you can retrigger the feature to win more free spins.
Buy Feature
If you want to trigger the free spins round in the base game instantly, you can use the Buy Feature option. Press the ‘Buy’ button to bring up the Buy Feature menu and choose your bet. The size of your bet will determine the feature’s cost (e.g. a £0.10 stake creates a £10.60 buy price).
Book of Tribes Extreme Final Thoughts
The Aztec theme is massively popular at online casinos, with a huge range of slots inspired by this ancient civilisation. Does Book of Tribes Extreme stand out from the rest?
While it is a well-crafted game with some definite strong points, Book of Tribes Extreme might not feel particularly distinctive to seasoned slot players. But there is still enough here to make it worthy of a look.
The max payout of 10,000x your bet is one of the top reasons to try Book of Tribes Extreme. The Free Spins feature with a new expanding symbol on each spin is another highlight, particularly with the top symbols on the paytable creating the potential for some valuable expansions.
However, the average RTP and high volatility mean that those generous payouts can take time to arrive. In my experience, payouts tended to stay small, but still landed fairly often.
If you are a fan of the Aztec theme, give Book of Tribes Extreme a try in demo mode to see how it works for you.
Rating: 7.0