Quick answer
Book of Power is a Relax Gaming slot (2023) with 96.11% RTP, very high volatility and a 15,000x max win. It uses 10 paylines with free spins, multipliers and wild symbols. An official free demo is available. RTP can vary by casino.
Key specs
- RTP
- 96.11%
- Volatility
- Very high
- Hit frequency
- 30.7% (about 1 in 3.3 spins)
- Max win
- 15,000x
- Grid
- 5 reels
- Pays
- 10 paylines
- Released
- 8 March 2023
- Bet range
- $0.10–$60
- Jackpot
- None
Casinos with Relax Gaming games
- Aurivo Casino100% up to $1,000 + 200 Free Spins30x bonusCarries Relax GamingPlay at Aurivo Casino (opens in new tab)
18+. New customers. Min dep $20. 30x bonus wagering. Max bet $5. 30 days. 200 spins on Book of Dead at $0.20. Credited in daily batches of 20 over 10 days. Full T&Cs apply.
Key terms
18+. New customers only. Min deposit $20. 30x bonus wagering requirement. Max bet $5 while wagering. Free spins on Book of Dead at $0.20 per spin. Spins credited in daily batches of 20 over 10 days. Offer valid 30 days. Full T&Cs apply. Please gamble responsibly.
Check Book of Power is in the lobby in your country.
Themes:
Free demo Members
Try Book of Power with play money before deciding whether to play for real. Official Relax Gaming demos are free for GambGenius members.
How to play Book of Power (members only)
Wins are paid when matching symbols land on an active payline, usually left to right starting from the leftmost reel. Your total stake is spread across the lines, and each line win is the line bet multiplied by the symbol's paytable value.
Book of Power is played on a 5 reels grid with 10 paylines.
- Set your stake. Choose your total bet per spin between $0.10 and $60. Wins are paid as multiples of this stake.
- Check the paytable. Open the game's info screen to see what each symbol pays and the exact rules for this version.
- Spin. Each spin's result is decided by a certified random number generator, independent of previous spins.
- Trigger the bonus. Land the required scatter symbols to start the free spins feature.
- Optional bonus buy. Where permitted, pay a fixed price to start the bonus directly.
The full Book of Power guide: how winnings work, 5 features and 5 strategy tips
- Your stake plan: a $50 budget → about $0.12 a spin (very high volatility)
- What 96.11% RTP costs per $100 wagered: $3.89 on average
- 5 features explained: free spins, multipliers, wild symbols, tumbling reels, bonus buy
- Bonus-buy risk breakdown
- Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet
- 3 RTP versions compared: 96.11%, 94%, 90%
- 4 slots with the same style and a higher RTP (up to 99%)
- Strategy tips and a session planner for Book of Power
Free · no card · 18+ only
Never sold · export or delete any time · What do members get?
How winnings work (members only)
What 96.11% RTP costs per $100 wagered, the 15,000x max win at a $1 stake
The top prize is capped at 15,000x your stake. On a $1 spin that is $15,000; on $0.20 it is $3,000. When the cap is reached the round usually ends immediately.
Multipliers are applied to wins as they land; in many games several multipliers add together or multiply each other, which is where the largest wins come from.
Because winning symbols tumble away and are replaced, one paid spin can produce a chain of wins. All of them count towards that spin's total.
What 96.11% RTP means
Expected return = stake × 96.11%
Over $100 of total bets, the long-run average loss is $3.89
RTP is a long-run average across millions of spins. Any single session can finish far above or below it, especially on a very high volatility game.
The published hit frequency is 30.7%, meaning roughly one spin in 3.3 returns something — though many of those wins are smaller than the stake.
Features explained (members only)
5 features explained: free spins, multipliers, wild symbols, tumbling reels and more
Free spins
A bonus round of spins played at no cost to your balance, usually triggered by landing three or more scatter symbols. Wins during the round are added to your balance, and many games let you retrigger extra spins.
Multipliers
Multipliers increase a win by a set factor, such as 2x or 10x. They can be attached to symbols, applied to a whole spin, or grow during a feature, and are a main driver of the biggest wins.
Wild symbols
Wilds substitute for regular paying symbols to help complete winning combinations. They do not normally replace scatter or bonus symbols.
Tumbling reels
After a win, the winning symbols are removed and new ones fall into their place. This can create several consecutive wins from a single paid spin. Also called cascades or avalanches.
Bonus buy
Lets you pay a fixed multiple of your stake to enter the bonus feature straight away instead of waiting for it to trigger. It raises variance considerably and is not available in every country (it is banned in the UK).
Strategy tips (members only)
- Size your stake to the volatility. Very high volatility means most spins lose and a large share of the return comes from rare big features. Treat it as entertainment with a strict budget and a stake of around 0.5% of your session budget or less. A simple rule: bring at least 400 spins' worth of budget, so a $50 budget suggests a stake of about $0.12.
4 more tips and a session planner
- Check which RTP version you're playing. Relax Gaming offers this game at 96.11%, 94%, 90%. Open the game rules at your casino and prefer sites running the 96.11% version.
- Treat bonus buys as high-risk. Buying the feature concentrates your budget into a few large-variance rounds. Many results return less than the price paid. Read our bonus buy guide first.
- Bonus wagering: at 96.11% RTP, clearing $1,000 of wagering costs about $38.90 on average. Check the bonus terms, as some casinos exclude specific games. Run your numbers in the wagering calculator.
- Set limits before you spin. Decide your loss limit and session time in advance and stop when you reach either. No pattern or betting system changes the outcome of a spin.
More on this in slot RTP and volatility explained and bankroll management.
Does it fit your budget? (members only)
Stake plans for $20 to $250 budgets, checked against the $0.10 minimum bet
For very high volatility we suggest a budget of at least 400 spins. This is what that means for Book of Power (bets from $0.10 up to a maximum bet of $60).
| Budget | Stake a spin | Bet range | Average cost of 400 spins |
|---|---|---|---|
| $20 | $0.05 | Below the $0.10 minimum bet | $0.78 |
| $50 | $0.12 | Fits | $1.95 |
| $100 | $0.25 | Fits | $3.89 |
| $250 | $0.62 | Fits | $9.73 |
Averages only: a short session can end far above or below them. Set a loss limit before you play.
RTP versions (members only)
3 RTP versions compared: 96.11%, 94%, 90%
Relax Gaming supplies Book of Power in 3 RTP versions and each casino chooses which one to run. Over $1,000 of bets, the 90% version costs about $61.10 more on average than the 96.11% version.
| Version | Average cost per $100 wagered | Extra vs best |
|---|---|---|
| 96.11% (best) | $3.89 | — |
| 94% | $6.00 | +$2.11 |
| 90% | $10.00 | +$6.11 |
Open the game's rules or info screen at your casino to see which version it runs.
Seen a different version at a casino? How member RTP reports work
Same style, better RTP (members only)
4 slots with the same style and a higher RTP (up to 99%)
Slots with the same mechanic (paylines) and volatility (very high) as Book of Power, with a higher published RTP. Casinos can still run lower versions of any of them.
Book of 9999% RTP · +2.89 pts
Revolvero98.11% RTP · +2 pts
Baba Yaga98% RTP · +1.89 pts
Battle The Beast98% RTP · +1.89 ptsQuestions
Frequently asked questions
Who makes Book of Power?
Book of Power is developed by Relax Gaming and was released in 2023.
What is the RTP of Book of Power?
The default RTP of Book of Power is 96.11%. Relax Gaming also supplies versions at 94%, 90%, so check the game's info screen at your casino.
Is Book of Power high volatility?
Book of Power is rated very high volatility. Very high volatility means most spins lose and a large share of the return comes from rare big features.
What is the max win on Book of Power?
The maximum win on Book of Power is 15,000x your stake, which is $15,000 on a $1 spin.
Can I play Book of Power for free?
Yes. GambGenius members can play the official Relax Gaming demo of Book of Power free on this page. It uses play money only, so demo wins can't be withdrawn, and it is for players aged 18 and over.
Does Book of Power have a bonus buy?
Yes. Book of Power includes a bonus buy option, although it is unavailable in some countries such as the UK.
Where can I play Book of Power?
Aurivo Casino carries Relax Gaming games. Check Book of Power is in the lobby in your country before you sign up. 18+ · New customers · T&Cs apply. Availability varies by country.
Where this data comes from
- relax-gaming.com Provider
- bigwinboard.com Slot database
Specs come from the provider's own site and 1 independent slot database. Casinos can run lower-RTP versions, so always check the game rules before you play.
Game artwork © Relax Gaming, shown to identify the game.
