Book of Oz Slot Review
Triple Edge Studios has carved out a distinctive position since partnering with Microgaming (now Games Global) in 2018, and Book of Oz represents their take on the classic Book series tradition. Players familiar with Book of Dead or Book of Ra will recognise the familiar expanding symbol mechanic, though Triple Edge adds their own twist with an optional respin feature. Released in December 2018, this 5-reel, 3-row slot with 10 paylines positions itself squarely in the high-volatility space with a 5,000x maximum win potential. The Wizard of Oz-inspired theme features fantasy art graphics with colourful backdrops, heart and courage potions, the cowardly lion, and the mighty wizard himself as the top-paying symbol.
Base Game & Features
Book of Oz operates on a straightforward 5×3 grid configuration with 10 fixed paylines running left to right. The betting structure accommodates various player types, with stakes ranging from £0.10 to £25 per spin, whilst the coin-based system allows adjustments from £0.01 to £2 per coin across all paylines. The paytable is divided between standard and premium symbols, with playing cards (10 through Ace) occupying the lower tier and thematic Oz symbols delivering the real value.
The Wizard symbol stands as the most lucrative icon on the reels, starting payouts from 10x bet and scaling up to the game’s maximum 5,000x stake for a full screen of five matching symbols. The courage potion pays 5x to 2,000x for at least two symbols, whilst heart and brain potions deliver 5x to 750x. Card symbols provide consistent smaller wins, paying 5 to 100 times the triggering bet for all five on the reels, or 5 to 150 times the wager when landing three King or Ace icons.
The golden book acts as both scatter and wild symbol, substituting for all regular symbols and triggering the free spins bonus round. Landing 3 to 5 scatters anywhere on the reels pays instant scatter wins of 2x to 200x stake before the bonus feature activates.
Respin Feature
Book of Oz includes an innovative paid respin mechanic that allows strategic decision-making after any base game spin. Players can pay to respin individual reels, with costs varying according to the win potential and lucrativeness of the situation. Getting jackpot icons on reels 1 and 3 makes it worthwhile to pay the respin cost to complete reel 2, though players should exercise caution as respin costs can reach 50x or more of the base stake. This feature adds a layer of strategic depth not found in most Book series games, though it’s worth noting that the respin feature is not available to players in the United Kingdom due to regulatory restrictions.
Book of Oz Free Spins
The free spins bonus round triggers when 3, 4, or 5 golden book scatters land anywhere on the reels. The number of spins awarded scales with scatter count: 10 free spins for 3 scatters, 12 for 4 scatters, or 25 for 5 scatters. Before the feature begins, a random symbol is selected to become the special expanding icon for the duration of the bonus round.
During free spins, whenever the chosen symbol lands on the reels, it expands to fill all positions on that reel, creating significant win potential when multiple reels contain the expanding symbol. The expansion mechanic applies to both regular symbols and premium icons, with the Wizard symbol providing the highest value when selected. Crucially, the feature can be retriggered by landing additional scatter symbols during the bonus round, a frequent occurrence that has earned the game a reputation for being “retrigger happy” amongst players.
The combination of expanding symbols and retrigger capability creates substantial volatility during free spins, with the potential for extended bonus sessions delivering multiple wins. The maximum payout of 5,000x stake is achievable through optimal expanding symbol combinations during retriggered free spins rounds.
Our Honest Verdict
Book of Oz positions itself as a solid entry in the crowded Book series category, delivering familiar mechanics with an innovative respin twist. Triple Edge Studios have created a fairly by-the-numbers high-variance slot that combines free spins with expanding symbols, but the optional respin feature adds strategic depth not found in direct competitors like Book of Dead or Book of Ra. The 96.50% RTP (with respins enabled) sits above the industry average, though base game RTP of 96.31% reflects the optional nature of the respin mechanic.
The game’s high volatility will appeal to players seeking substantial win potential and willing to weather extended dry spells between bonus triggers. The 5,000x maximum win is respectable if not groundbreaking, positioning Book of Oz in the mid-tier for maximum payout potential. The frequent free spins retriggering creates genuine excitement during bonus rounds, though base game pacing can feel slow for players accustomed to more frequent feature activation.
Visually, the fantasy art style with atmospheric music delivers solid presentation, and the flexible betting range from £0.10 to £25 per spin accommodates both casual players and those with larger bankrolls. Mobile optimisation across iOS and Android maintains feature parity and performance, with instant play and downloadable options available.
Book of Oz deserves consideration for players who enjoy high-variance slots with expanding symbol mechanics, particularly those familiar with the Book series tradition seeking a fresh take on proven gameplay. The respin feature adds originality, though costs can be prohibitively high and the mechanic requires careful bankroll management. Those seeking consistent smaller wins or lower volatility should look elsewhere, as this is built for risk-seeking players willing to invest in pursuit of the 5,000x potential. It will more than suffice for Book series enthusiasts, though it won’t revolutionise the category.
Book of Oz FAQs
-
What is the RTP (Return to Player) of Book of Oz?
Book of Oz has an RTP of 96.50% when using the respin feature, and 96.31% in the base game. The higher RTP with respins reflects the additional cost of that optional feature. Both rates sit above the industry average, making Book of Oz a fair choice from a return perspective. -
What is the maximum win on Book of Oz?
The maximum win on Book of Oz is 5,000x your stake. This substantial payout potential can be achieved through a combination of high-value Wizard symbols landing during the free spins round with the expanding symbol mechanic active on multiple reels. -
Does Book of Oz have free spins?
Yes, Book of Oz includes a free spins bonus round triggered by landing scatter symbols. You’ll receive 10 free spins for 3 scatters, 12 for 4 scatters, or 25 for 5 scatters. During free spins, a random symbol is selected to expand across entire reels when it lands, significantly increasing win potential. Free spins can also be retriggered, with the game earning a reputation for frequent retriggers during bonus rounds. -
Can I play Book of Oz on mobile?
Yes, Book of Oz is fully optimised for mobile play on both iOS and Android devices. The game is built with HTML5 technology, meaning it maintains identical graphics, features, and RTP whether you play on desktop, tablet, or smartphone. Both instant play and downloadable options are available, with the mobile version loading quickly and maintaining smooth performance. -
Does Book of Oz have a bonus buy feature?
No, Book of Oz does not offer a traditional bonus buy feature. Instead, it includes a unique respin mechanic that allows you to pay to respin individual reels after any base game spin. This feature lets you strategically pursue specific winning combinations, though costs vary based on win potential and can reach 50x or more of your base stake. Note that the respin feature is not available to players in the United Kingdom due to regulatory restrictions. -
Who developed Book of Oz?
Book of Oz was developed by Triple Edge Studios, an independent studio that partnered with Microgaming (now Games Global) for distribution on their platform. Triple Edge Studios released Book of Oz in December 2018 as part of their growing portfolio, which includes titles ranging from high-volatility slots to licensed IP games.
