


Book of Oz is a high-volatility online slot from Microgaming Online with an RTP of 96.31% and a maximum win of 5,000x.
Page updated July 2026
Book of Oz brings the Wizard of Oz to the book-slot genre via the Microgaming Online network, dressing the familiar expanding-symbol formula in an emerald-hued fantasy skin rather than another trip down the Nile. It's a smart bit of repositioning for a saturated genre, trading pyramids and pharaohs for ruby slippers and yellow brick roads, and the cartoonish art style gives it a lighter, more storybook feel than most Egyptian-themed rivals.
The reel setup is textbook: a 5-reel grid with 10 paylines, playable on desktop and mobile from stakes as low as 0.10 up to 25 per spin, keeping the entry point accessible for casual players while still offering enough range for more committed sessions. Low-value symbols come from the standard A-K-Q-J-10 card suite, while the premium end of the paytable swaps in keys, hearts, storybook tomes and wizard characters, with five wizards on a payline paying out 500 times the stake in the base game alone — a rare case of a book slot's base-game top symbol offering real weight on its own.
What separates this release from countless other book clones is its Respin feature. After any spin, players can choose to respin individual reels as many times as they like in pursuit of a specific missing symbol — useful for chasing that elusive third book scatter or completing a near-miss combination. The catch is that respin costs scale with the potential payout on offer, so it's a tool best used with intent rather than mashed repeatedly.
The Free Spins round remains the headline attraction, triggered by landing 3, 4 or 5 book symbols anywhere in view for 10, 12 or 25 free spins respectively — a generous scaling that rewards bigger scatter hits with meaningfully more spins rather than a token bump.
On the numbers, Book of Oz posts a 96.31% RTP, a genuinely competitive figure for the genre, paired with high volatility and a maximum win potential of 5,000x the stake. That combination points to a game capable of long dry spells punctuated by substantial free spins hauls, particularly once the expanding book symbol starts stacking wins across the reel set. The 500x base-game ceiling from wizard symbols also gives the core game a bit more bite than book slots that rely entirely on the bonus round for excitement.
For players tired of yet another sandy tomb, Book of Oz offers a well-executed change of scenery with above-average RTP and a genuinely useful Respin mechanic layered on top of the genre's usual free spins engine. Take it for a free spin in demo mode at johnessyslots, or head down the yellow brick road for real money once you're ready.
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Book of Oz has an RTP (return to player) of 96.31%. RTP is the theoretical percentage of total stakes a slot returns to players over a very large number of spins, as published by Microgaming Online — individual sessions can land far above or below it.
Book of Oz is rated high volatility. High-volatility slots pay out less often, but wins tend to be bigger when they land — expect longer dry spells and larger swings to your balance.
The advertised maximum win for Book of Oz is 5,000x. Max wins are extremely rare by design — treat them as a ceiling, not an expectation.
Book of Oz is developed by Microgaming Online.
Verified Data via Johnessy AI