Book of Oz Lock puts you in control with its reel-locking mechanic and 5,000x win potential. Discover how to master its respin feature, expand symbols, and manage your bankroll in this strategic slot experience.
Book of Oz Lock and Spin Demo
Book of Oz Lock and spin Casinos
100% + 200 spins
5% - 15% Cashback
100% + 100 spins
Up to 225% + 180 FS on first 3 deposits
110% + 120 spins
Up to C$2,900 + 290 FS on first 4 deposits
150% + 70 spins
400% Bonus on first 4 deposits + 5% cashback
100% + 150 spins
Up to 255% + 250 FS on first 3 deposits
Gameplay Basics
Book of Oz Lock and Spin operates on a 5×3 grid with 10 fixed paylines. You’ll see classic card symbols (10 through A) along with premium symbols like the Wizard, potions, and statues. The standout mechanic is the Lock-and-Respin feature—this allows you to lock reels after any base game spin, offering a strategic edge and giving the game its “Lock” name.
Getting Started
- Set your bet size (C$0.10 to C$100 per spin)
- Choose autoplay or manual spin
- Watch for the Book symbol – it acts as both Wild and Scatter
Core Game Features
Base Game Spins
- Wins pay left to right on active paylines
- The Book symbol substitutes for all others
- Landing three or more Books triggers Free Spins
Free Spins with Expanding Symbols
- One special symbol is chosen before Free Spins start
- Special symbols expand when enough land to form a win
- Expanding symbols pay on any position
Reel Lock Mechanic
- In the base game, you can lock reels after any spin
- Locking a reel costs coins based on the reel’s symbols and your bet
- Respin the other reels to chase winning combinations or trigger Free Spins
Key Symbols (Highest to Lowest Value)
- Wizard
- Heart potion
- Lion statue
- Book (Wild/Scatter)
- A, K, Q, J, 10
Playing Lock’n’spin in casino
Lock Strategy
Locking reels is optional and strategic. When a valuable symbol appears, you can:
- Lock it to try and complete higher-paying combos
- Skip the lock to conserve your bankroll
It’s all about weighing cost vs. potential reward.
Win Formation
- Minimum 3 matching symbols on a payline
- Wins multiply by the line bet
- Multiple paylines can win simultaneously
Game Identity & Versions
Book of Oz Lock ‘N Spin was released in 2019 as a sequel to the original Book of Oz. It was developed by Triple Edge Studios exclusively for Microgaming. Unlike the original, this version introduces the Reel Lock feature in the base game, not just during bonuses.
Differences from Original Book of Oz
- Reel Lock Mechanic – Available on every spin, not just during respins
- Bonus Buy (in some markets) – Access Free Spins directly for 100x your bet
- Refined RTP – 96.60%, slightly above industry average
Availability
The game offers a consistent experience across all markets, with:
- 96.60% RTP
- 5×3 grid layout
- 10 fixed paylines
- Max win potential of 5,000x your stake
Related Games
| Game Title | Release Year | Key Feature |
|---|---|---|
| Book of Oz | 2018 | Respins (1-4 reels) |
| Book of Oz Lock | 2019 | Reel Lock Mechanic |
Triple Edge has not released further sequels in the Book of Oz line since 2019.
Technical Details
- 5 reels, 3 rows
- High volatility
- Bet range: C$0.10 – C$100
- Max win: 5,000x
- RTP: 96.60%
- HTML5 technology for smooth mobile/desktop gameplay
Special Features Summary
- Reel Lock & Respin
- Free Spins with expanding symbols
- Bonus Buy (region-dependent)
- Quick Spin and Auto-play options
Symbol Payouts
| Symbol | 5x | 4x | 3x |
|---|---|---|---|
| Wizard | 500x | 100x | 10x |
| Heart | 200x | 40x | 4x |
| Lion | 75x | 10x | 1x |
| Book | 200x | 20x | 2x |
Books trigger Free Spins when 3 or more land anywhere and also act as Wilds.
Lock & Respin – How It Works
After any base spin, you can lock one or more reels:
- Click a reel to freeze it
- Respin remaining reels at a displayed cost
- Locking premium symbols boosts win potential
- Each lock is priced based on symbol value and bet size
Strategy Tips
- Lock reels only when potential payout outweighs cost
- Holding 2-3 matching high-paying symbols can justify a respin
- Avoid locking low-value symbols unless they contribute to a broader win
- Use bonus buy feature carefully—while it guarantees Free Spins, it doesn’t improve RTP
Bankroll Management
- Bet 1–2% of your total bankroll
- Adjust bet size after big wins or losses
- Use lock feature selectively to avoid draining funds
- Set loss/win limits before sessions
Developer Collaboration
Triple Edge Studios, an exclusive partner of Microgaming, designed Book of Oz Lock to build on the success of the original. This partnership has also produced games like:
- Lara Croft Temples and Tombs™
- African Quest
- Ancient Fortunes: Zeus
The studios combine creative slot design with global platform reach, ensuring Book of Oz Lock delivers performance and innovation.
Streamer & Player Feedback
Popular Among Streamers:
- Lock feature allows for strategic on-screen decisions
- 5,000x potential win adds excitement
- Strong visuals and smooth animations
Player Ratings: 3.8/5
Comparison to Other Book Slots
| Feature | Book of Oz Lock | Book of Dead | Book of Ra | Legacy of Dead |
|---|---|---|---|---|
| RTP | 96.60% | 96.21% | 96.21% | 96.58% |
| Volatility | High | High | High | High |
| Grid | 5×3 | 5×3 | 5×3 | 5×3 |
| Special Feature | Symbol Lock | None | None | None |
What Sets It Apart:
- Lock & Respin feature
- Real-time decision-making
- Extra control over outcome
Common Ground With Other Book Slots:
- 10 Free Spins from 3+ Book Scatters
- Expanding symbols during bonuses
- Book symbol serves as both Wild and Scatter
Book of Oz Lock stays true to the “Book slot” formula while enhancing it with strategic depth. It’s a great pick for players who enjoy classic mechanics but want more involvement between spins. The 96.60% RTP and 5,000x max win offer solid value, especially for those with the bankroll and patience to ride out its high volatility.
- Symbol lock brings tactical depth
- Base game wins are frequent enough to stay engaging
- Bonus buy adds flexibility
- High volatility can lead to long dry spells
- Base game may feel repetitive without locks
