DEGEN Studios introduces Book of Dizzy and its expanding reel features

DEGEN Studios has announced Book of Dizzy, an online slot built around a changing reel layout and symbols that can expand across entire reels. The game combines randomly increasing reel heights with a free spins feature that can retain an Expanding Symbol throughout the bonus. It also introduces a Pre-Bonus Gamble, allowing players to pursue additional changes before free spins begin, with the risk of losing the feature if an attempt fails.

A base game that can change shape

Book of Dizzy begins with a five-reel, three-row grid and 10 paylines. During the base game, the layout can expand at random to either a 5×4 or 5×5 configuration, changing the number of visible positions while play is under way.

A separate feature can turn a randomly selected symbol into an Expanding Symbol that covers an entire reel. DEGEN Studios says the symbol can still pay even when non-expanded reels interrupt the sequence. The two mechanics can also activate on the same spin, so a larger grid and a reel-covering symbol may appear together.

The combination gives the base game two distinct forms of variation. Expanding Reels change the dimensions of the playing area while Expanding Symbols alter how a selected symbol occupies the grid. Their simultaneous activation also means that both features can influence the same round.

Three free spins paths add different features

The free spins round has three levels, triggered by landing three, four or five Wild Scatters. Each level has its own name and set of changes: “Open The Book”, “Turn The Page” and “Master Spellbook”.

Three Wild Scatters activate “Open The Book”, during which one Expanding Symbol remains active throughout the bonus. This persistent feature carries the selected symbol from one free spin to the next, making it a continuing part of the bonus round.

Four Wild Scatters unlock “Turn The Page”, which expands the grid to 5×4 and removes one symbol from the setup. The studio's description does not identify the removed symbol. However, the feature combines a larger reel layout with a change to the available symbol configuration.

Five Wild Scatters trigger “Master Spellbook”. This feature opens the full 5×5 grid and adds the highest-paying premium symbol as an additional Expanding Symbol. The third level therefore introduces another symbol with the ability to cover an entire reel while using the largest grid configuration described for the game.

The three levels create a progression in which each higher trigger count introduces another adjustment to the reel layout or symbol configuration. Rather than offering identical free spins rounds with different names, the structure uses the number of Wild Scatters to determine which additional features become available.

The Pre-Bonus Gamble adds a risk decision

Before free spins start, players can use the “Pre-Bonus Gamble” to try to secure one or more enhancements. The options are to increase the reel height, remove low-paying symbols or upgrade the Expanding Symbol. Each enhancement is gambled separately.

A successful attempt applies the selected change. A failed attempt forfeits the bonus, making the feature an explicit risk decision rather than a guaranteed upgrade. Players therefore have to consider whether attempting to improve the bonus is worth the possibility of losing the entire feature.

The options affect different elements of the bonus. Increasing reel height changes the grid, removing low-paying symbols changes the available symbol mix and upgrading the Expanding Symbol changes which symbol can expand across an entire reel.

This mechanic adds another decision before the main free spins feature begins. It also establishes a clear consequence for unsuccessful attempts, distinguishing the Pre-Bonus Gamble from features that simply add enhancements without the possibility of forfeiting the bonus.

Danny Gordon outlines the design approach

Danny Gordon, Head of Studio at DEGEN Studios, said “Book of Dizzy is designed to keep messing with the reels. One spin can make the grid bigger, another can turn whole reels into the same symbol and sometimes Dizzy throws both at you at once.

“The Pre-Bonus Gamble is where players get to play sorcerer themselves. They can make the reels bigger, clear out weaker symbols or cast a stronger Expanding Symbol into play, but every extra spell comes with the risk of losing the lot.

“By the time Master Spellbook opens, the game has pretty much torn up its own rulebook. Bigger reels, more Expanding Symbols and fewer symbols getting in the way make it feel like Dizzy has finally let all the magic loose.”

His comments highlight the interaction between the changing grid, expanding symbols and the gamble feature. The bonus structure follows the same design approach, with the Wild Scatter count determining which additional changes become available.

The Pre-Bonus Gamble also represents an important part of the game's overall structure. While the expanding reels and symbols determine how the game can change during play, the gamble feature gives players a decision to make before entering the free spins round.

Regulatory information and responsible play

Operators offering online slots in regulated markets may be subject to requirements covering game rules, information about winning chances and how outcomes are determined. In Great Britain, the Gambling Commission sets out relevant requirements in its remote gambling and software technical standards.

The scope of these requirements depends on the applicable licence and market. Their existence should not be taken as confirmation of a particular game's certification or regulatory status.

The launch information outlined here does not specify return-to-player values, volatility, a maximum win or a stake range. Players should check the game's information screen and the operator's published rules for market-specific details before playing.

Expanding reels, persistent symbols and pre-bonus options do not establish the likelihood of a particular outcome. GambleAware also provides information and support for people affected by gambling-related harm.

Conclusion

Book of Dizzy brings several connected features together rather than relying on a single bonus mechanic. Its base game can change the grid height, while Expanding Symbols can cover complete reels. The free spins modes then build on those elements through persistent symbols, symbol removal and a larger final layout.

The Pre-Bonus Gamble adds a separate decision before the bonus begins. Players can attempt to improve the feature, but the stated risk of losing the bonus makes the choice consequential. Understanding the conditions attached to each enhancement is therefore an important part of assessing how the feature operates.

For DEGEN Studios, the title's defining feature is the interaction between changing reel dimensions, symbols that can occupy entire reels and bonus levels that introduce further modifications. The three free spins modes give this structure a clear progression, while the Pre-Bonus Gamble introduces an additional element of risk before the bonus starts.

Ultimately, Book of Dizzy is presented as a slot built around evolving game conditions rather than a fixed reel arrangement. Its combination of expanding mechanics and tiered bonus features gives the release a distinct structure within the studio's portfolio. The precise rules, applicable game information and conditions provided by the operator remain essential considerations for anyone evaluating the title.

FAQs

What is Book of Dizzy?
Book of Dizzy is an online slot developed by DEGEN Studios. Its main features include expanding reels, Expanding Symbols, three free spins levels and a Pre-Bonus Gamble.

What is the starting grid in Book of Dizzy?
The game starts with a five-reel, three-row configuration and 10 paylines.

Can the reels expand during the base game?
Yes. The reel layout can randomly increase from 5×3 to either 5×4 or 5×5.

What are Expanding Symbols?
Expanding Symbols are selected symbols that can cover an entire reel when their feature activates. DEGEN Studios states that they can still pay when non-expanded reels interrupt the sequence.

Can expanding reels and Expanding Symbols appear together?
Yes. Both features can activate during the same spin, combining a larger grid with a symbol that covers an entire reel.

How are free spins triggered in Book of Dizzy?
Three, four or five Wild Scatters trigger the free spins feature. Each number activates a different bonus level.

What happens in the Open The Book feature?
Three Wild Scatters activate Open The Book. One Expanding Symbol remains active throughout the free spins round.

What makes Turn The Page different?
Four Wild Scatters trigger Turn The Page. The feature uses a 5×4 grid and removes one symbol from the setup.

What is the Master Spellbook feature?
Five Wild Scatters activate Master Spellbook. It opens the full 5×5 grid and adds the highest-paying premium symbol as an additional Expanding Symbol.

How does the Pre-Bonus Gamble work?
Players can gamble separately for increased reel height, removal of low-paying symbols or an upgraded Expanding Symbol. A successful attempt applies the enhancement, while a failed attempt forfeits the bonus.

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