Book of Aztec Bonus Buy: Features, Rewards and Wins
Book of Aztec Bonus Buy is a video slot from Amatic themed around the ancient Aztecs: stone carvings around the reels, stepped pyramids in the jungle, and golden artifacts from a lost civilization. The game features a 5x3 grid with 10 paylines and a round of 10 bonus spins, where a randomly selected symbol pays out on all active paylines at once.
The mechanics are straightforward even for beginners: you set your bet using the BET buttons or instantly bet the maximum with MAX BET, spin the reels, and collect winning combinations from left to right. Your bet and the number of paylines carry over to the bonus round unchanged, so the settings from the base game determine the value of your upcoming bonus spins.
Play Book of Aztec Bonus Buy OnlineExclusive Book of Aztec Bonus Buy Bonus for New Players
The Storyline and Atmosphere of the Book of Aztec Bonus Buy Slot
The slot takes players to the jungles of Central America in search of traces of Aztec civilization. The reels are framed by stone carvings featuring hieroglyphs, held in place by golden figures of deities, and at the center of the story is an ancient book with a relief image on its cover. The game was developed by Amatic and is part of the Book of Aztec series, featuring an added bonus buy feature.
The symbol set features artifacts and images from an expedition: a female explorer in a wide-brimmed hat, a stepped pyramid surrounded by greenery, a golden fish-shaped mask, a jaguar figure, and card ranks A, K, Q, J, and 10 in bright, colorful designs. The design is intentionally minimalist—there are no story elements between spins, and all attention is focused on the reels.
The game’s pace fits the genre: the base game delivers frequent small wins with lower-value symbols, while the truly substantial payouts come from the bonus round. What sets this version apart from the base Book of Aztec is the BONUS BUY button, which allows you to enter the BONUSSPINS round directly, without waiting for three books to land.
Quick Overview of Book of Aztec Bonus Buy
Book of Aztec Bonus Buy is a 5-reel, 10-payline slot centered around a book that serves as both a wild and a scatter symbol. Below is a summary of the key features to help you understand the game’s format before your first spin.
| Parameter | Value |
|---|---|
| Provider | Amatic |
| Theme | Aztecs, jungle, artifact expedition |
| Reel Format | 5 reels, 3 rows |
| Number of lines | 10 paylines |
| Payline direction | From left to right on adjacent reels |
| Special symbol | Book (BOOK) — acts as both a wild and a scatter |
| Bonus Mode | 10 BONUS SPINS for 3 or more Books in any position |
| Key bonus mechanic | Random expanding symbol (EXPANDING) |
| Retrigger | Yes — additional BONUSSPINS can be won within the bonus round |
| Bonus Buy | Yes — BONUS BUY button |
| Maximum Payout According to the Paytable | 125,000 for 5 Explorer symbols |
| Additional buttons | MAX BET, AUTO, bet adjustment |
| Platforms | PC browser, mobile browser, casino app |
| Demo mode | Available (FREEPLAY mode with a virtual balance) |
How Winnings Work in Book of Aztec Bonus Buy
Basic Rules (How Combinations Are Calculated)
- Payline wins are paid from left to right on adjacent reels.
- All prizes are awarded for combinations of matching symbols.
- 3, 4, or 5 BOOK symbols win in any position, regardless of paylines.
- The bet and number of paylines are the same in both the main game and the BONUS game.
- The payout for each payline and the total result of the round are displayed in the information bar below the reels.
- In the event of a malfunction, all games and winnings are void.
Paylines
The game features 10 paylines, the patterns of which are shown in the help section. The lines run both horizontally and in a zigzag pattern, so a winning combination can form in different parts of the playing field.
The bet amount is set in a separate field on the interface, and the MAX BET button immediately sets the maximum bet:
| Interface Element | Function |
|---|---|
| "Lines" Field | Displays the number of active paylines |
| "Bet" field | Displays the current bet per spin |
| BET “+” and “−” buttons | Increase or decrease the bet in increments |
| MAX BET | Instantly sets the maximum bet |
| AUTO | Starts a series of automatic spins |
| BONUS BUY | Opens the BONUSSPINS round purchase window |
Important note: The bet is locked at the moment the bonus is triggered, since it remains the same in the BONUS game as in the base game. Therefore, the bet size in the base game directly determines the value of the upcoming round.
Special symbols: book, Wild, and Scatter
Book symbol (Wild + Scatter)
The Book symbol in Book of Aztec Bonus Buy serves three functions at once:
| Function | How it works |
|---|---|
| Wild | The BOOK symbol substitutes for any symbol, helping to complete a winning combination on a payline |
| Scatter | 3, 4, or 5 BOOK symbols win in any position on the screen |
| Bonus Trigger | 3 or more BOOK symbols in any position award 10 BONUS SPINS |
How many Scatters are needed for the bonus: just three BOOK symbols are enough, and their position doesn’t matter—they don’t have to be adjacent and aren’t tied to active paylines. A single such combination yields two results at once: a payout for the Scatters and entry into the bonus round.
Book of Aztec Bonus Buy Paytable
Below are the payouts for combinations of matching symbols in credits. The values are listed for a bet of 250 and are adjusted proportionally when the bet amount changes.
| Symbol | 5 | 4 | 3 | 2 | Comment |
|---|---|---|---|---|---|
| Researcher | 125,000 | 25,000 | 2,500 | 250 | The game's most valuable symbol |
| Pyramid | 50,000 | 10,000 | 1,000 | 125 | Second-highest-paying premium symbol |
| Golden Mask | 18,750 | 2,500 | 750 | 125 | Medium Symbol |
| Jaguar | 18,750 | 2,500 | 750 | 125 | Payouts are the same as for the Golden Mask |
| A / K | 3,750 | 1,000 | 125 | — | High-value and low-value symbols |
| Q / J / 10 | 2,500 | 625 | 125 | — | Base symbols for frequent small wins |
| BOOK (Scatter + Wild) | 50,000 | 5,000 | 500 | — | Substitutes for any symbol and awards 10 BONUSSPINS for 3 or more |
How to read the paytable: the four highest-paying symbols pay out for just two matches, while card symbols only start paying out for three or more. The payout difference between four and five symbols for the explorer is fivefold, so expanding this particular symbol during the bonus round has the greatest impact on the round’s outcome.
BONUSSPINS: How the Bonus Mode Works
What happens when BONUSSPINS are triggered:
- 3 or more BOOK symbols in any position trigger a scatter payout and 10 BONUSSPINS.
- At the start of the round, an EXPANDING symbol is randomly selected.
- Any symbol except the BOOK can be selected.
Here’s how the bonus mode works step by step:
| Stage | What Happens |
|---|---|
| 1. Trigger | Three or more books marked as BONUS SPIN appear on the screen |
| 2. Symbol Selection | A book opens, and an EXPANDING symbol is randomly selected from inside it |
| 3. Spins | 10 BONUS SPINS are triggered at the same bet and with the same number of paylines |
| 4. Payout | The selected symbol pays out according to the paytable on all active paylines |
| 5. Retrigger | You can win additional BONUSSPINS during the bonus round |
The bonus game ends when all BONUSSPINS have been played. The cumulative winnings counter is displayed above the reels and increases as the round progresses.
How the expanding symbol works
The main difference between an EXPANDING symbol and a regular symbol is how combinations are calculated:
| Feature | What this means in practice |
|---|---|
| Calculation based on the paytable | The selected symbol pays out at the same values as in the base game |
| All active paylines are counted | Winnings are credited on all active paylines simultaneously |
| Non-adjacent positions | A combination counts regardless of whether the symbols appear consecutively |
| Exception | The BOOK symbol cannot become an EXPANDING symbol |
This leads to a simple practical conclusion: the value of a round depends heavily on which symbol lands. If it’s the Explorer or the Pyramid, a series of 10 spins can yield a significant result; if it’s a card rank, the payout will often be modest, though it will trigger more frequently.
BONUS BUY: Bonus Purchase
It is this feature that distinguishes the Bonus Buy version from the base Book of Aztec game. The BONUS BUY button is located to the right of the reels and allows you to enter the BONUSSPINS round without waiting for three books to land.
- Clicking it opens the “Buy BONUSSPINS” window, which displays the cost.
- You can confirm or cancel the purchase using the buttons in this window.
- The cost is recalculated based on the selected bet—for example, 830 credits.
- The purchased round awards the same 10 BONUSSPINS with a randomly selected EXPANDING symbol.
The practical benefit of this feature is that it eliminates the main uncertainty of classic “book” slots—the wait for the trigger. But there’s a different risk here: the amount is deducted immediately, while the outcome of the round remains random and may end up being less than what you spent.
Game Features of Book of Aztec Bonus Buy
- 5 reels, 3 rows, and 10 paylines.
- Payline wins are paid from left to right on adjacent reels.
- The BOOK symbol substitutes for any other symbol and also acts as a scatter.
- 3, 4, or 5 BOOK symbols win in any position on the screen.
- 3 or more BOOK symbols award 10 BONUS SPINS.
- At the start of the bonus round, an EXPANDING symbol is randomly selected—any symbol except the BOOK.
- The selected symbol pays on all active paylines regardless of whether the symbols appear consecutively.
- The bet and number of lines in the main game and the BONUS game are the same.
- You can win additional BONUS SPINS during the bonus round.
- The BONUS BUY button allows you to purchase the bonus round directly.
- The four highest-paying symbols pay out for just two matching symbols.
Pros and Cons of Book of Aztec Bonus Buy
| Pros | Disadvantages |
|---|---|
| Simple rules: combinations from left to right, the book counts separately | Big wins usually depend on the bonus round and symbol expansion |
| The Book provides both a payout and access to the bonus round at the same time | The value of the bonus depends on which symbol appears randomly |
| The four highest-paying symbols pay out for as few as two matching symbols | Card symbols only start paying out with three or more matching symbols |
| There is a retrigger for additional BONUSSPINS | Waiting for the bonus to trigger can take a long series of spins |
| The BONUS BUY button eliminates the wait for the bonus | The purchase cost is deducted immediately and does not guarantee a return |
| Simple interface with MAX BET and autoplay | Classic structure, with no additional mini-games |
Play Book of Aztec Bonus Buy for free
If your goal is to understand the rules (paylines, the Book wild, selecting the EXPANDING symbol, and how the bonus purchase works), it makes sense to start with demo mode at any casino or game catalog where a free version is available. In demo mode, the game launches with a virtual balance in FREEPLAY mode, and all mechanics work the same as in the real-money game.
| Criterion | Demo Mode | Real-Money Play |
|---|---|---|
| Balance | Fictitious, replenished | Your own funds |
| Registration | Usually not required | Required, including verification |
| Rules and Mechanics | Exactly the same | Exactly the same |
| Bonus Purchase | Available for virtual funds | Deducted from your real balance |
| Withdrawing winnings | Not possible | Available according to the platform's rules |
| What it’s suitable for | Exploring paylines, bonuses, and the paytable | Playing with a set budget and limits |
Keep in mind that results in demo mode are not indicative of future sessions: each spin is calculated independently, and a winning streak in the free version does not increase your chances going forward.
Strategies and Tactics in Book of Aztec Bonus Buy
Book of Aztec Bonus Buy is a slot with random outcomes, and there are no “surefire” strategies. However, there are approaches that help you better manage your bankroll and expectations.
| Approach | Essence | What to Look For |
|---|---|---|
| Bet Control | Selecting a bet level based on the planned number of spins | The MAX BET button immediately sets the maximum bet |
| Playing with a bonus | The bet is calculated so that there are enough spins to reach three books | The trigger is random; there are no guarantees regarding timing |
| Buying the bonus | Direct access to BONUSSPINS via the BONUS BUY button | The cost increases with the bet; the outcome remains random |
| Fixed sessions | Pre-set limits on spins and amounts | The key is to stick to your plan, not extend it |
| Aggressive Martingale | Doubling the bet after a loss | Quickly leads to high bets and loss of the bankroll |
Bet control
- The bet is adjusted using the BET buttons, and MAX BET immediately takes the game to the next level—keep this in mind so you don’t accidentally set the maximum.
- All payouts in the paytable are scaled proportionally to the bet, so there’s no point in “saving” on your bet just to keep the amounts the same.
- It’s a good idea to choose a level where your bankroll will last for at least several dozen spins.
Bonus Round (Book as Scatter)
- The best part of the game is the 10 BONUS SPINS with an EXPANDING symbol and the possibility of re-triggers.
- Don’t increase your bet “in pursuit” of the bonus: the probability of landing books does not depend on the bet size.
- Remember that your bet and the number of paylines carry over to the bonus round unchanged, so you should decide on these settings in advance.
- Buying the bonus does not increase your chances of landing the valuable EXPANDING symbol—it is determined randomly.
The “Fixed Sessions” Strategy
- Set a limit in advance: for example, 30–50 spins at your chosen bet.
- If the bonus doesn’t trigger, end the session as planned—don’t play “just 10 more spins.”
- It’s helpful to set not only a loss limit but also an exit point for a winning streak.
- It’s convenient to set the AUTO button to exactly the planned number of spins.
Be careful with aggressive Martingale strategies
Doubling your bet after a loss may seem tempting, but in slots, it quickly leads to large bets and the risk of losing your bankroll. In Book of Aztec Bonus Buy, this is especially dangerous because the cost of buying the bonus increases along with your bet, and waiting for the trigger can take a long time.
Download Book of Aztec Bonus Buy
Book of Aztec Bonus Buy by Amatic is usually available in both browser and mobile versions (via the casino’s website or its app). No separate installation file for the game itself is required—it runs directly within the platform.
| Platform | How to Play | Features |
|---|---|---|
| PC | Browser (Chrome, Safari, Firefox) | Large screen, easy bet customization, and autoplay |
| Android | Mobile browser or casino app | Only download the app from the official source |
| iOS | Safari or the official app | App availability depends on your region |
How to install on Android
- Open the official website of your chosen casino in your browser.
- If there’s an app, download it from the casino’s official source or from the app store.
- Log in to your account, search for Book of Aztec Bonus Buy, and launch the game.
How to play on iOS
- Open the casino in Safari or install the official app (if available in your region).
- Log in and find Book of Aztec Bonus Buy in the Amatic game catalog.
- Select your bet using the BET buttons—and spin the reels.
Where to Play Book of Aztec Bonus Buy
The game can be found in the catalogs of online casinos that feature Amatic content. When choosing a site, look for practical factors: stability, a user-friendly mobile version, betting limits, and transparent rules.
| Criterion | Why It’s Important |
|---|---|
| License and Rules | Transparent terms regarding bets, bonuses, and payouts |
| Availability of BONUS BUY | In some jurisdictions, the bonus purchase feature may be disabled |
| Display of Bets and Paylines | Allows you to clearly understand the cost of a spin |
| Demo mode available | Allows you to learn the mechanics risk-free |
| Bet limits | Help you choose a comfortable session size |
| Mobile version | Stable game performance on smartphones |
| Self-limitation tools | Deposit and time limits, and self-exclusion |
Frequently Asked Questions About the Book of Aztec Bonus Buy Slot
Who developed the Book of Aztec Bonus Buy slot?
Book of Aztec Bonus Buy was released by Amatic and is a version of the classic Book of Aztec slot with an added bonus buy feature. The game features an Aztec theme: the reels include a female explorer wearing a hat, a stepped pyramid, a golden mask, and a jaguar. The game layout consists of 5 reels, 3 rows, and 10 paylines.
How does the BOOK symbol work in Book of Aztec Bonus Buy?
The Book symbol combines the functions of both a wild and a scatter: it substitutes for any symbol on the reels and pays out in any position. Three, four, or five BOOK symbols result in a win regardless of paylines, and according to the paytable, five books pay out 50,000. Additionally, three or more books trigger a round of 10 bonus spins.
How does the bonus round work in Book of Aztec Bonus Buy?
If three or more book symbols appear, the player receives 10 BONUSSPINS. At the start of the round, an EXPANDING symbol is randomly selected; this can be any symbol except the BOOK. The selected symbol pays out according to the paytable on all active paylines, regardless of whether the symbols appear consecutively.
Can you buy a bonus in Book of Aztec Bonus Buy?
Yes, there’s a BONUS BUY button to the right of the reels for that. When you press it, a window opens showing the purchase amount, which you can confirm or cancel, and the cost is recalculated based on your selected bet. The purchased round awards the same 10 bonus spins with a randomly selected expanding symbol.
Which symbol pays out the most?
The most valuable symbol is the female explorer: five of these symbols pay out 125,000, four pay out 25,000, and three pay out 2,500. Next is the pyramid, which pays 50,000 for five matching symbols, while the golden mask and the jaguar pay up to 18,750. All payouts are scaled proportionally to the selected bet.