Triple Edge Studios launched Book of Oz Lock 'N Spin Released in September 2019 as the sequel to their Book of Oz series. The game builds upon the original while introducing new features.
Visual Design
The slot showcases an emerald-themed backdrop with detailed symbol designs. The wizard character appears in his distinguished top hat alongside magical potions. Green shades dominate the visual elements, creating the atmosphere of the Emerald City.
Technical Details
Core specifications of the game:
| Specification | Detail |
|---|---|
| Layout | 5 reels, 3 rows |
| Paylines | 10 fixed lines |
| RTP Range | 96.35% - 96.60% |
| Volatility | High |
| Max Win | 5,000x stake |
| Bet Range | £0.10 - £100 per spin |
Game Features
The Hyperspins™ Lock 'N Spin feature marks the key enhancement from the original game. Players can:
- Lock up to 4 reels while respinning others
- Select specific reels for locking
- View individual reel locking costs
The Second Chance feature activates during free spins bonus rounds. Three or more book scatter symbols award 10, 12, or 25 free spins. Players can reshuffle the expanding symbol selection if the initial choice proves unsatisfactory.
The high volatility gameplay combines base game mechanics with bonus features. The Lock 'N Spin feature requires strategic decisions as players evaluate reel locking costs against potential wins.
Lock N' Spin Feature Analysis
The Lock N' Spin mechanic [link_4] stands as a central innovation in recent slot releases, changing standard gameplay approaches.
Core Mechanics
Players can lock up to 4 reels while respinning others during base game rounds. The feature activates after the first spin, with specific costs displayed beneath each reel. Cost calculations reflect potential winning combinations.
Cost Structure
The dynamic pricing system adjusts based on:
- Premium and scatter symbols command higher lock costs [link_5]
- Costs rise with potential payout values
- Total lock cost appears in bottom left display
The mechanic proves valuable when two scatter symbols appear on reels, offering paths to free spins activation.
Strategic Applications
Key scenarios for Lock N' Spin usage:
-
Scatter Collection: Locking positions with two visible book symbols increases free spins trigger chances
-
Premium Combinations: Multiple wizard symbols create paths to 5,000x stake maximum wins
Wins require involvement of respun reels, adding tactical depth to lock decisions. Cost evaluation against potential returns shapes optimal strategy, particularly with premium symbol appearances.
The RTP rises to 96.60% [link_6] during Lock N' Spin use, compared to 96.35% base game rate. This statistical edge rewards strategic feature activation.
Free Spins and Special Features
The free spins bonus adds significant winning potential to Book of Oz Lock 'N Spin free spins feature.
Bonus Trigger Mechanics
Book symbols act as both wilds and scatters. Three or more trigger the free spins round:
| Scatter Count | Free Spins | Scatter Prize |
|---|---|---|
| 3 Scatters | 10 spins | 2x bet |
| 4 Scatters | 12 spins | 20x bet |
| 5 Scatters | 25 spins | 200x bet |
Additional scatters during the bonus round award extra spins.
Second Chance System
The game randomly selects an expanding symbol before free spins begin. Players can accept or reject this selection.
Rejecting triggers a free reshuffle, though the new symbol may offer lower value than the original pick.
Expanding Symbol Mechanics
Key features of the expanding symbol system:
- Selected symbol expands across full reels during free spins
- Expansion calculations follow regular payouts
- Premium symbols, especially the wizard, can deliver wins up to 5,000x stake
The Second Chance feature builds upon classic book-slot mechanics while adding strategic choices. This enhancement complements the base game's Lock N' Spin system.
Mathematical Analysis
Book of Oz Lock 'N Spin shows distinct mathematical patterns driving its high-volatility gameplay.
RTP and Volatility
The slot features variable return rates. Base RTP begins at 96.35%, rising to 96.60% with strategic Lock 'N Spin usage.
The game operates as a high variance slot, delivering wins every 1 in 3.3 spins. Key statistics show:
- Hit frequency: 1 in 3.3 spins
- Starting stake: £0.10
- Maximum stake: £25.00
Win Potential
Maximum wins reach 5,000x stake. Maximum payouts at different stake levels:
| Bet Level | Maximum Win Potential |
|---|---|
| Minimum (£0.10) | £500 |
| Maximum (£25.00) | £125,000 |
Risk Structure
High volatility creates significant bankroll swings. Players face extended periods between major wins, though potential payouts increase accordingly.
Lock 'N Spin mechanics boost RTP to 96.60%, though reel locking costs require careful evaluation against possible returns. Strategic reel selection proves crucial for optimal results.
The expanding symbol feature during free spins combines with high variance to enable maximum wins. These top payouts remain statistically rare within the game's mathematical framework.
Mobile Gaming Experience
Book of Oz Lock 'N Spin shows strong performance across mobile platforms.
Device Support
The game runs on iOS and Android devices through HTML5 framework. Tests show consistent display quality across screen sizes:
| Device Type | Compatibility | Features |
|---|---|---|
| Android Phones | Full Support | Native Touch Controls |
| iOS Devices | Full Support | Gesture Recognition |
| Tablets | Full Support | Scaled Interface |
Touch Controls
The interface features mobile-optimised elements:
- Large reel lock buttons
- Clear cost indicators
- Responsive paytable navigation
Technical Performance
Graphics maintain emerald theme quality across devices. Key performance features:
- Quick loading times
- Smooth expanding symbols during free spins
- Responsive reel mechanics
- Stable bonus transitions
The mobile version delivers 96.35% to 96.60% RTP, matching desktop rates. Second Chance feature includes safeguards against accidental selections during crucial gameplay moments.
Original Book of Oz Comparison
Triple Edge Studios shifts core mechanics in Book of Oz Lock 'N Spin sequel.
Feature Changes
The Lock 'N Spin feature replaces single reel respins with up to four reel locks. This change reshapes gameplay strategy.
Key differences between versions:
| Feature | Original Book of Oz | Lock 'N Spin Version |
|---|---|---|
| Respin Mechanic | Individual Reel Respin | Up to 4 Reel Locks |
| RTP Range | Fixed | 96.35% - 96.60% |
| Special Symbol Selection | Fixed | Second Chance Available |
| Maximum Win | 5,000x | 5,000x |
Visual Elements
Triple Edge Studios maintains the mystical atmosphere. Updates include:
- Refined emerald symbol details
- Smoother feature animations
- Enhanced sound transitions
Gameplay Evolution
Second Chance feature adds risk-reward decisions during free spins. Lock 'N Spin costs vary based on potential outcomes, creating deeper strategy than original respins.
Microgaming's James Buchanan says: "Following the success of the hugely popular Book of Oz, Triple Edge Studios have successfully created an enchanting sequel in Book of Oz Lock 'N Spin. Elevating the original with even more exciting and rewarding features".
Triple Edge Studios Design Lead Brendan Walton adds: "We believe the Hyperspins Lock 'N Spin and Second Chance features provide another dimension of appeal to the overall gameplay, offering players a highly entertaining experience and great win potential".
Strategic Gameplay Guide
Book of Oz Lock 'N Spin requires specific approaches for optimal results.
Feature Activation
Lock 'N Spin activation proves most valuable in select scenarios:
- Premium symbol appearances, particularly Wizard symbols
- Two visible scatter symbols
- Five-of-a-kind combination opportunities
Lock costs rise significantly after initial selections. Optimal scenarios show distinct priorities:
| Scenario | Lock Priority | Expected Value |
|---|---|---|
| 2 Scatters Visible | High | Potential Free Spins |
| Premium Symbols on First 3 Reels | Medium | Line Win Potential |
| Low-Value Symbols | Low | Limited Returns |
Risk Assessment
Base game RTP starts at 96.35%, rising to 96.60% with strategic Lock 'N Spin usage. Success requires careful cost evaluation.
Key considerations for Lock 'N Spin activation:
-
Cost Analysis
- Clear first reel lock cost display
- Higher subsequent lock costs
- Return potential versus total investment
-
Symbol Evaluation
- Wizard symbols deliver 500x for five matches
- Premium symbols offer superior lock value
- Book symbols serve as wilds and scatters
Second Chance feature demands strategic choices:
- Retain Wizard symbol initial selections
- Keep Lion statue awards
- Reshuffle options for card symbols
Lock costs show significant variation - £3.83 first lock can rise to £9.83 for second positions. Wins require respun reel involvement. High volatility demands disciplined bankroll management.
Player Reviews and Community Feedback
Book of Oz Lock 'N Spin shows mixed reception across gaming platforms. Ratings fluctuate between 1.9 and 3.1 out of 5.
Player Experience
Community feedback highlights key aspects:
| Feature | Player Rating | Response |
|---|---|---|
| Visual Design | High | Emerald theme praised |
| Game Features | Medium-High | Lock mechanism innovative |
| User Interface | High | Clear cost display |
| Mobile Experience | High | Smooth performance |
Player Concerns
Lock 'N Spin pricing draws criticism. Players report £3.83 first lock costs jumping to £9.83 for second positions.
Additional issues include:
- Limited payline count
- £25 maximum bet cap
- UK respin restrictions
High volatility proves challenging despite 96.35% - 96.60% RTP range.
Community Response
Triple Edge Studios Design Lead Brendan Walton says: "We loved creating Book of Oz Lock 'N Spin, producing another visually stunning and feature-packed game".
Players praise:
- Emerald theme visuals
- Second Chance strategic elements
- Mobile version performance
The 5,000x stake potential combines with Lock 'N Spin mechanics for balanced gameplay.
Microgaming's James Buchanan notes the game "elevates the original with even more exciting and rewarding features".
The game maintains steady player numbers among high-volatility slots with strategic elements. Lock 'N Spin and Second Chance features create distinct gameplay compared to standard book-style slots.
Conclusion
Book of Oz Lock 'N Spin delivers strategic depth while maintaining the original's magical appeal. The Lock 'N Spin feature combines with 5,000x stake potential for enhanced gameplay options.
Strategic Lock 'N Spin usage raises RTP to 96.60%, though high volatility demands careful stake management. Second Chance mechanics during free spins separate this title from standard book-style slots.
Dynamic pricing draws player concerns, yet smooth mobile performance and visual elements receive praise. The game suits high-volatility players seeking strategic elements, provided they maintain disciplined approaches.
FAQs
Q1. What is the maximum win potential in Book of Oz Lock 'N Spin? The maximum win potential in Book of Oz Lock 'N Spin is 5,000x your stake. At the maximum bet of £25 per spin, this translates to a potential win of £125,000.
Q2. How does the Lock 'N Spin feature work? The Lock 'N Spin feature allows players to lock up to 4 reels in place while respinning the others. Each locked reel has a specific cost displayed underneath, calculated based on the potential winning combinations that could form.
Q3. What is the RTP range for Book of Oz Lock 'N Spin? The Return to Player (RTP) range for Book of Oz Lock 'N Spin is 96.35% to 96.60%. The base RTP starts at 96.35% but can increase to 96.60% when utilising the Lock 'N Spin feature effectively.
Q4. How are free spins triggered in this game? Free spins are triggered by landing three or more book symbols, which serve as both wild and scatter. Three scatters award 10 free spins, four scatters give 12 free spins, and five scatters grant 25 free spins.
Q5. Is Book of Oz Lock 'N Spin optimised for mobile play? Yes, Book of Oz Lock 'N Spin is fully optimised for mobile play. It's compatible with both iOS and Android devices, featuring responsive touch controls, smooth animations, and maintains the same high RTP range as the desktop version.
All values (Bet Levels, Maximum Wins etc.) mentioned in relation to this slot game are subject to change at any time.