Book of Inferno is a Quickspin video slot released on 7 February 2023 and built around Anna the Explorer’s battle with three infernal opponents. Book of Inferno uses a 5x3 reel layout, 10 fixed paylines and a Book symbol that serves as both Wild and Scatter. Book of Inferno adds Marked Symbols, an upgrade ladder and a Free Spins Bonus to the familiar book-slot structure.
Book of Inferno places six card ranks and four character symbols on reels set against an underworld backdrop. Book of Inferno evaluates regular line wins from left to right across 10 paylines. Book of Inferno also displays the paying symbols in a ranked strip above the reels, which supports its upgrade mechanic.
Book of Inferno gives the Book symbol several linked functions during a round. Book of Inferno uses it to substitute for paying symbols, trigger the Free Spins Bonus and raise the currently marked symbol by one level. Book of Inferno determines every spin randomly, so the presence of a marked symbol does not guarantee that enough matching icons will land.
Book of Inferno has the following verified specifications:
Book of Inferno is listed by Wildz with high volatility at 7/10 and demo play enabled. Book of Inferno has no progressive jackpot, and its quoted 5,846x maximum is a fixed game limit rather than a growing prize pool. Book of Inferno configurations can vary between operators, so the information panel inside the opened game remains the relevant source for the active betting conditions.
Book of Inferno accepts a stake before each independently generated spin and then evaluates the symbols across its 10 fixed paylines. Book of Inferno normally requires matching paying symbols to form a valid line from the leftmost reel. Book of Inferno treats the Book as a substitute for other paying symbols while also counting it as the Scatter.
Book of Inferno can apply a second win evaluation when enough copies of the active Marked Symbol appear. Book of Inferno expands those marked icons over their full reels and allows them to pay anywhere on a line without remaining in a left-to-right sequence. Book of Inferno does not let a staking pattern select the marked icon or control where its copies land.
Book of Inferno can nominate any paying symbol as a Marked Symbol during the base game. Book of Inferno expands the marked icons to cover their reels when enough copies land to form a qualifying result. Book of Inferno then evaluates those expanded icons on any positions along a payline rather than requiring adjacent placement from reel one.
Book of Inferno also keeps the Marked Symbol mechanic active during the Free Spins Bonus. Book of Inferno selects a random marked icon at the start of that round and applies the same expansion rules to eligible results. Book of Inferno cannot be made to choose a premium icon through spin timing, stake changes or previous outcomes.
Book of Inferno upgrades the active Marked Symbol by one position whenever a Book lands together with it. Book of Inferno follows the ranked strip above the reels, moving through the card values and then the character symbols. Book of Inferno can therefore change which icon expands and may create additional marked icons during the same evaluation.
Book of Inferno converts the lowest symbol into the highest when an upgrade moves beyond the top-ranked icon. Book of Inferno applies this transformation according to its programmed feature rules rather than a player choice. Book of Inferno never guarantees that an upgrade will produce a payout, because the necessary symbol positions still depend on the random spin.
Book of Inferno awards 10 Free Spins for 3 Books, 15 Free Spins for 4 Books and 25 Free Spins for 5 Books. Book of Inferno uses the Book as the trigger Scatter and chooses a random Marked Symbol when the bonus begins. Book of Inferno keeps that marked-symbol system available throughout the awarded spins.
Book of Inferno can retrigger the feature when 3, 4 or 5 Books land during the bonus. Book of Inferno grants the same corresponding number of extra spins for those retriggers. Book of Inferno does not make a retrigger certain, and the length or result of one bonus round does not affect the next.
Book of Inferno includes a Buy Feature priced at 125x the current bet in markets where the option is permitted. Book of Inferno uses that payment to trigger the Free Spins Bonus with at least 3 Books. Book of Inferno does not offer the purchase through Great Britain-licensed sites because British rules prohibit buying access to a slot feature.
Book of Inferno treats the purchase as paid entry to a random bonus rather than as a guaranteed return. Book of Inferno can award different trigger counts and outcomes after the same feature-buy price. Book of Inferno players should compare the 125x cost with their chosen spending limit before using the option in an eligible market.
Book of Inferno is rated 7/10, placing it in Wildz’s high-volatility range. Book of Inferno can therefore produce extended gaps between its more valuable feature results. Book of Inferno requires a bankroll and stake size that can tolerate uneven returns if real money is used.
Book of Inferno volatility describes the distribution of possible results, not a schedule that forces a win after a losing sequence. Book of Inferno remains random on every spin regardless of how recently a bonus or large payout appeared. Book of Inferno players cannot lower the mathematical volatility by changing reel-stop timing or switching devices.
Book of Inferno has a published maximum win of 5,846x the stake. Book of Inferno can combine expanded marked symbols, upgrades and bonus-round results on the path towards larger payouts. Book of Inferno has no progressive jackpot, so the stated ceiling does not depend on a network prize pool.
Book of Inferno treats the maximum as a possible upper limit rather than an expected result. Book of Inferno does not increase the chance of reaching that ceiling after a sequence of unsuccessful spins. Book of Inferno players should set stakes from an affordable budget instead of working backwards from the advertised multiplier.
Book of Inferno can be started by selecting an available stake, checking the displayed total bet and pressing spin. Book of Inferno should be opened only after its paytable and high-volatility rating have been reviewed. Book of Inferno real-money play in Great Britain is also subject to the statutory online-slot stake limits that apply to the player’s age group.
Book of Inferno must be played without its Buy Feature on a Great Britain-licensed site because feature purchases are prohibited there. Book of Inferno still allows the Free Spins Bonus to be triggered naturally by landing the required Books. Book of Inferno players should use deposit, session and spending controls rather than treating the bonus trigger as a target that must be chased.
Yes, Book of Inferno can run on compatible mobile phones and tablets. Book of Inferno uses an HTML5 format that adapts its 5x3 reels, symbol strip and controls to a smaller display. Book of Inferno remains dependent on the browser, device and connection meeting the operator’s technical requirements.
Book of Inferno mobile play uses the same random outcome process as play on a desktop when the same configuration is opened. Book of Inferno does not make Marked Symbols, Books or Free Spins more frequent because a touchscreen is used. Book of Inferno players should confirm the stake shown on a compact screen before every paid round.
Yes, Book of Inferno has demo play enabled in the Wildz-listed MGA build. Book of Inferno demo mode uses virtual credits so the paylines, Marked Symbols, upgrades and Free Spins can be examined without a cash stake. Book of Inferno virtual-credit results cannot be withdrawn as money.
Book of Inferno free play does not predict what will happen in a later real-money session. Book of Inferno uses random rounds in both formats, so a successful demo sequence creates no advantage. Book of Inferno access through a Great Britain-licensed operator requires age verification before a free-to-play gambling game is made available.
Book of Inferno may be supplied in Great Britain by an operator holding the appropriate Gambling Commission permission and carrying Quickspin content. Book of Inferno players must be at least 18 years old, complete the required identity checks and stay within the applicable online-slot stake limit. Book of Inferno should be used only with money set aside for entertainment.
Book of Inferno is listed in Wildz’s international catalogue, while Wildz states that United Kingdom visitors are redirected to partner casinos. Book of Inferno players should check the Gambling Commission public register for the business that ultimately provides their account. Book of Inferno access in Northern Ireland follows a separate legal framework from the system used in England, Scotland and Wales.
Book of Inferno real-money play in Great Britain falls under the Gambling Commission’s regulatory framework. Book of Inferno customers must have their name, address and date of birth verified before gambling, and the minimum age is 18. Book of Inferno feature purchases are unavailable on British licensed sites under the prohibition on buying slot features.
Book of Inferno stakes are capped at £2 per game cycle for players aged 18 to 24 and £5 for players aged 25 or over. Book of Inferno demo access at a licensed operator also requires prior age verification. Book of Inferno players should distinguish Great Britain from Northern Ireland when applying these rules.
| Area | United Kingdom Rule |
|---|---|
| Minimum online gambling age | 18+ |
| Main regulator | Gambling Commission for Great Britain |
| Identity checks | Name, address and date of birth must be verified before gambling |
| Maximum online slot stake, ages 18–24 | £2 per game cycle |
| Maximum online slot stake, ages 25+ | £5 per game cycle |
| Buy Feature | Feature purchases are prohibited on Great Britain-licensed sites |
| Free demo access at licensed operators | Age verification is required before access |
| Northern Ireland | Separate legal framework from Great Britain |
| Wildz status for UK visitors | Wildz states that visitors are redirected to partner casinos |
Min/Max Bet:
€
0.10 –
100.00
Volatility:
High
(7/10)
Platform:
Desktop & Mobile
Developer:
Quickspin
Game Type:
Slots