Verified provider facts · 19 October 2026
Book of Shadows slot guide
Book of Shadows is an extreme-volatility Nolimit City book slot that lets the player pay for extra rows and use reel locks before its expanding-symbol free spins.
Verified snapshot
Book of Shadows facts that survived the source check
Identify the exact version first. Its defining choice happens before the usual book bonus: the board can remain 5×3 or expand to four or five rows, changing the number of paylines and the total stake. This table keeps provider statements separate from fields that were absent on the official page. “Check in game” is a deliberate result: it prevents an RTP, stake range or feature flag from a different operator build becoming a false universal claim.
| Field | Verified answer |
|---|---|
| Provider | Nolimit City |
| Provider API symbol | Not publicly documented |
| Release | 20 August 2020 |
| Format | 5×3, 5×4 or 5×5; 10, 15 or 20 lines |
| Mechanic | Selectable rows · Lucky Locks · expanding symbol |
| RTP | 96.01% base; 94.09% lower configuration published |
| Volatility | Extreme / high |
| Maximum | 30,338× bet |
| Bonus buy | Yes; may be removed in some markets |
| Mobile | Desktop and mobile shown on provider sheet |
Demo status
Mechanic preview without an unverified iframe
No provider-hosted iframe endpoint could be verified as reachable from the build location, so this page uses an original mechanic visual instead of loading an untested frame. The preview below is original editorial artwork, contains no wagering controls and does not simulate a win. Use it to identify the layout and feature family before opening the live information screen.
Play — 22BET ↗
Core mechanic
How Book of Shadows builds a round
The base setup uses five reels and three rows with ten lines. Shadow Rows can add a fourth row and fifteen lines or a fifth row and twenty lines. Because additional rows cost more, comparisons must use total bet rather than treating every grid as the same spin price.
Lucky Locks let selected reels remain in place for a paid respin. Locking a promising reel does not ensure the unlocked reels finish a line, and the extra action has its own cost. It is a control over board state, not a prediction tool.
The book acts as wild and scatter. The provider also supplies a gamble option and a feature-buy route, although feature purchasing may be removed in regulated markets. The live controls determine which options exist in the version being played.
Play — 22BET ↗Feature round
What changes in the bonus
Three or more books award free spins and choose a golden expanding symbol. The selected symbol can expand across a reel when it forms an eligible win. The player can also make feature choices involving rows and the number of spins.
The official sheet publishes a 96.01% setup and a lower 94.09% configuration. Row choices and feature routes can alter the displayed theoretical return, so the percentage beside the selected stake is more useful than one isolated headline.
Play — 22BET ↗Concrete rule example
One round, without an invented win
Begin on three rows and ten lines, then compare the displayed total bet with the five-row option before changing it. If three books open free spins and the skull becomes the golden symbol, a later skull line can cause those skulls to expand across their reels. The expansion still depends on an eligible line and does not promise the published maximum.
Play — 22BET ↗RTP and session shape
What the numbers mean in a short session
Extreme volatility means the 30,338× ceiling coexists with many ordinary or losing rounds. RTP is a long-run theoretical ratio over a huge sample, while the row count, chosen configuration and enabled features affect the exact figure shown. A short session can finish far above or below any published percentage.
Availability check: Not asserted: the public BoyleSports lobby could not be verified from the research location.
Mechanic neighbours
Related slot guides
Search questions
Book of Shadows FAQ
How many rows can Book of Shadows use?
The grid can use three, four or five rows, paired with 10, 15 or 20 paylines.
What are Shadow Rows?
They are paid extra rows that expand the board and line count.
What does Lucky Locks do?
It holds selected reels while the remaining reels respin for an added cost.
What RTP versions are published?
The official game sheet lists 96.01% and a 94.09% lower configuration.
Can the bonus be bought?
Nolimit Bonus exists but may be unavailable in some regulated markets.
Primary evidence
Provider sources
- nolimitcity.com/games/book-of-shadows
- static.nolimitcity.com/documents/bookofshadows/Nolimit_City-Affiliate_Game_Sheet_Slots_Book_of_Shadows.pdf
The source list supports game facts only. It does not establish current BoyleSports lobby availability.
Final live check
Search Book of Shadows, then verify the version
Use the exact title and provider, open the help panel and stop if the RTP or feature set differs from this checked record. Set the session amount before the first round; no mechanic changes the independence of the next result.
Play — 22BET ↗
