Book of slots
6 inferno slots · 18 related slots · Book-of mechanic or ‘Book of’ in the name · newest firstA book that doubles as wild and scatter triggers the free spins, then a randomly picked symbol stretches across whole reels: that recipe is what ties these hellfire, devil and flame-themed book slots together. To compare every theme and mechanic side by side, head back to all inferno slots.
Book of Inferno by Quickspin is the oldest of the group and sticks to the classic formula, with expanding symbols in the free spins and a buy option. In Book of the Damned the reels themselves grow, not just the symbols, and a gamble game follows wins. Book of Lilith spreads the action over six reels and pays scatters anywhere on the grid. Fire-lit samurai and random multipliers during free spins set Book of Immortal Warlords by Spinomenal apart. Vampires and devils meet extra free spins and expanding symbols in Book of Evil by Spinon. Book of Madness Flaming Link breaks the mould with a link round, fixed jackpots and sticky collector symbols, though it has no bonus buy.
The recipe is easy to spot: an old book that is both wild and scatter, a free spins round triggered by that book, and one randomly chosen symbol that spreads across the whole reel during the free spins. In the inferno pool the book turns darker: damned souls, Lilith, a book of evil or a laboratory full of madness.
Book slots depend on expanding symbols, since they are what turn the book into full reels. These games tend to swing hard, so it is worth checking how volatility shapes inferno slots before you pick one.
Slots6+ 18 related slots in the table
Providers5represented
RTP range94–96.14%RTP known for all 6
Largest max win10,000× (2 slots)shared maximum
Newest with own page5 Jun 2026Book of Immortal Warlords
What these slots have in common
The mechanic and the newest examples
Book of Evil, Book of Lilith and Book of Immortal Warlords follow the classic recipe with an expanding symbol in free spins. Quickspin's Book of Inferno also builds its free spins around expanding symbols and is the oldest title in the list. Book of the Damned uses the book as wild and scatter and lets the reels grow as well. Book of Lilith pays scatter wins anywhere on the grid.
Book of Madness Flaming Link takes another route: next to the book sit a link round with fixed jackpots, sticky collect symbols and respins. The themes range from angels and hell skulls through vampires and devils to samurai warriors in fire. With Book of Lilith and Book of Immortal Warlords, Spinomenal is the only studio with two titles.
Book of Immortal Warlords
Spinomenal
RTP 96.14% · Max 5,000×
Book of Madness Flaming Link
SimplePlay
RTP 96.12% · Max 500×
Book of Lilith
Spinomenal
RTP 96.01% · Max 10,000×
Book of the Damned
Rival Gaming
RTP 96.11% · Max 10,000×
Book of Evil
SpinOn
RTP 94% · Max 5,000×
Book of Inferno
Quickspin
RTP 94.19% · Max 5,798×
All Book of slots
All slots, newest first
The list is deliberately short: it holds only slots that use the book recipe or whose name starts with Book of, 6 titles out of a total pool of 6. The highest max win is 10,000×, shared by Book of the Damned and Book of Lilith, and the median is 5,399×. Book of Madness Flaming Link has by far the lowest ceiling. Every title except Book of Madness Flaming Link offers a bonus buy.
Cards: highest RTP first, only slots with their own page; the table lists every slot.
Book of Immortal Warlords
Spinomenal
RTP 96.14% · Max 5,000×
Book of Madness Flaming Link
SimplePlay
RTP 96.12% · Max 500×
Book of the Damned
Rival Gaming
RTP 96.11% · Max 10,000×
Book of Lilith
Spinomenal
RTP 96.01% · Max 10,000×
Book of Inferno
Quickspin
RTP 94.19% · Max 5,798×
Book of Evil
SpinOn
RTP 94% · Max 5,000×
| Slot | Provider | RTP | Volatility | Max win | Release | Features |
|---|---|---|---|---|---|---|
| Book of Immortal Warlords | Spinomenal | 96.14% | High | 5,000× | 5 Jun 2026 | Extra free spins, Book-of mechanic, Bonus buy |
| Book of Madness Flaming Link | SimplePlay | 96.12% | High | 500× | 9 Feb 2026 | Extra free spins, Adding symbol, Bonus game |
| Book of Lilith | Spinomenal | 96.01% | High | 10,000× | 23 Oct 2025 | Book-of mechanic, Bonus buy, Expanding symbols |
| Book of the Damned | Rival Gaming | 96.11% | High | 10,000× | 10 Oct 2025 | Book-of mechanic, Bonus buy, Expanding reels |
| Book of Evil | SpinOn | 94% | High | 5,000× | 18 Sep 2024 | Extra free spins, Book-of mechanic, Bonus buy |
| Book of Inferno | Quickspin | 94.19% | High | 5,798× | 25 Jan 2023 | Bonus buy, Expanding symbols, Free spins |
Related slots without their own page
| Slot | Provider | RTP | Volatility | Max win | Release | Features |
|---|---|---|---|---|---|---|
| Book of Papyrus | Lambda Gaming | 96% | Medium | 10,000× | 16 Apr 2026 | Extra free spins, Bonus bet, Bonus buy |
| Book of Odin | TrueLab Games | 96.16% | Medium | 10,000× | 17 Jun 2025 | Extra free spins, Bonus buy, Free spins |
| Book of Witches | Thunderspin | 95.89% | High | 1,000× | 24 Oct 2024 | Extra free spins, Bonus game, Bonus symbols |
| Book of Giza | Pixmove Games | 97% | High | 10,000× | 3 Sep 2024 | Book-of mechanic, Bonus buy, Expanding symbols |
| Merlin: Journey of Flame | Play'n GO | 96.29% | High | 7,500× | 13 Jul 2023 | Extra free spins, Book-of mechanic, Expanding symbols |
| Forge of the Gods | Iron Dog Studio | 96% | High | 5,500× | 22 May 2023 | Extra free spins, Book-of mechanic, Expanding symbols |
| Cleo's Book | Belatra Games | 96.01% | High | 50,000× | 21 Oct 2022 | Extra free spins, Bonus wheel, Book-of mechanic |
| Book of Pharaoh 777 Jackpot | Bigpot Gaming | 82.4% | Medium | — | 10 Aug 2022 | Bonus buy, Free spins, Free spins multiplier |
| Book HOTFIRE | AceRun | 96.1% | High | 5,000× | 29 Jul 2022 | Extra free spins, Book-of mechanic, Expanding symbols |
| Valley of Ra | Five Men Games | 95.16% | High | 5,000× | 15 Jun 2022 | Bonus bet, Book-of mechanic, Expanding symbols |
| Divine Fire | Gamomat | 96.14% | Medium | 3,500× | 10 May 2022 | Extra free spins, Bonus game, Bonus symbols |
| Legacy of Imhotep | Yolted | 94% | High | 10,000× | 10 Dec 2021 | Extra free spins, Book-of mechanic, Bonus buy |
| Book of Fire | Edict | 96.02% | High | 5,000× | 2 Dec 2021 | Extra free spins, Book-of mechanic, Expanding symbols |
| The Mummy Books of Amun Ra | Playtech Origins | 95.97% | High | 10,000× | 1 Oct 2021 | Book-of mechanic, Expanding symbols, Free spins |
| Book of the Princess | Spearhead Studios | 96.4% | High | 11,000× | 15 Jan 2021 | Book-of mechanic, Expanding symbols, Free spins |
| Book of Nefertiti | ReelNRG | 96.05% | High | 5,000× | 14 Jul 2020 | Book-of mechanic, Expanding symbols, Free spins |
| Book of Treasures | Thunderspin | 96.16% | High | 1,500× | 30 May 2019 | Bonus symbols, Book-of mechanic, Bonus buy |
| Book of Spells | Fazi | 96.1% | High | 500× | 10 Jan 2018 | Book-of mechanic, Expanding symbols, Free spins |
Source: provider data · last checked on 17 Jun 2026 · 6 inferno slots with their own page.
Split by volatility
Number of slots per level
All 6 titles are rated high volatility. The recipe explains why: the big payouts come almost entirely in free spins, when the chosen symbol forms full reels, while the base game often stays quiet for a long time. If you want a calmer profile, you will not find it in this list but among lower-volatility slots in other themes.
High
6 slots · Book of Immortal Warlords, Book of Madness Flaming Link, Book of Lilith and more
By RTP band
Number of slots per RTP band
4 of the 6 slots exist in several RTP versions: Book of the Damned, Book of Inferno, Book of Evil and Book of Immortal Warlords. The table shows the value from the game data, ranging from 94% to 96.14%. The two lowest values, Book of Evil and Book of Inferno, belong to titles with several versions, so a casino may run a different setting.
96 to under 97%
4 slots · Book of Immortal Warlords, Book of Madness Flaming Link, Book of Lilith and more
under 95%
2 slots · Book of Evil, Book of Inferno
Also in other motifs
Slots shared with other motifs
Book of the Damned, Book of Inferno, Book of Evil and Book of Lilith have their main theme in hell and devils, Book of Madness Flaming Link in demons and Book of Immortal Warlords in fire and flames. The book of list groups them across those themes by their shared game design.
