| Core Identity |
| Developer | Kiragames Co., Ltd. | BitMango, Inc. | Tripledot Studios | BitMango, Inc. | Big Duck Games LLC | Easybrain | Oakever Games |
| Category | Games | Games | Games | Games | Games | Puzzle | Games |
| Platform | Android, iOS | Android, iOS | Android, iOS | iOS, Android | iOS, Android | Android | Android, iOS |
| Store Metrics |
| Rating | 4.8 / 5 | 4.7 / 5 | 4.7 / 5 | 4.6 / 5 | 4.8 / 5 | 4.5 / 5 | 4.7 / 5 |
| Ratings Count | 37,273 | 1,737 | 656,118 | 16,771 | 392,918 | 1,263,159 | 396,242 |
| Price | Free | Free | Free | Free | Free | Free | Free |
| Release Date | May 16, 2009 | Jul 10, 2015 | Mar 11, 2020 | May 2, 2015 | Jun 7, 2012 | Nov 22, 2019 | Nov 9, 2021 |
| Last Updated | Apr 10, 2026 | Apr 13, 2026 | May 28, 2026 | Apr 27, 2026 | Jan 16, 2026 | Mar 24, 2026 | Apr 15, 2026 |
| Sentiment & Reviews |
| Sentiment | mixed | - | mixed | positive | positive | mixed | mixed |
| Score | 65/100 | - | 45/100 | 75/100 | 75/100 | 55/100 | 45/100 |
| Praises | - Adjustable difficulty settings allow players to tailor the challenge to their personal skill level
| - | - Meditative and soothing puzzle mechanics provide a reliable daily stress relief habit for players
| - The core sliding puzzle mechanic provides a relaxing and mentally stimulating experience for long-term players
| - Satisfying puzzle mechanics provide a relaxing and addictive mental challenge for daily play
| - Engaging Gameplay
- Simple and Accessible
| - Relaxing puzzle gameplay provides a calming mental escape for users during daily downtime
|
| Complaints | - Aggressive ad frequency and intrusive ad behavior disrupt the core relaxing gameplay experience
| - | - Excessive ad frequency interrupts the flow of gameplay and forces frequent app restarts
| - Excessive ad frequency between levels disrupts the flow and creates a negative user experience
| - Aggressive advertising frequency interrupts the flow of gameplay and frustrates active users
| - Excessive Advertising
- Rigged Difficulty
| - Aggressive ad frequency and intrusive ad behavior disrupt the core relaxing experience
|
| Requests | - Reliable cloud synchronization functionality to ensure progress is saved across multiple devices
| - | - Purchase option for an ad-free experience to remove current monetization friction
| - Implementation of Game Center integration to track achievements and provide social competition
| - Additional level content requested by long-term players who have completed all current challenges
| - | - Paid subscription or one-time purchase option to remove advertisements permanently
|
| Strategic Intel |
| Strengths | - Tactile woody aesthetic provides premium feel
- 18,000-puzzle library sustains long-term engagement
- Established brand legacy fosters user trust
| - | - Meditative puzzle loop sustains daily habit
- Offline-first architecture captures transit-based engagement
| - 3,000-level library sustains long-term engagement
- Offline-first architecture enables travel usage
- Core sliding mechanic provides reliable stress relief
| - Color-blind accessibility labels expand addressable market
- 2,500+ level library creates high switching costs
- Game Center integration gamifies long-term progress
| - Massive social proof (1.2M+ ratings)
- Unique 9x9 Sudoku clearing mechanic
- Strong live-ops with Seasonal Events and animated rewards
| - Offline-first architecture enables session continuity in low-connectivity environments
- 60,000-puzzle library provides a massive content-moat for long-term engagement
|
| Weaknesses | - Cloud synchronization failures prevent progress recovery
- Aggressive ad-frequency causes game freezes
- Lack of permanent ad-removal options
| - | - Aggressive ad-load triggers high churn
- Post-update stability issues erode trust
- No paid ad-free tier
| - No cloud-save mechanism prevents progress restoration
- Aggressive ad-frequency triggers high churn
- Technical instability on current-generation hardware
| - Ad-close button failure rate creates high friction
- Interstitial frequency exceeds user tolerance
- Lack of meta-progression layer limits session depth
| - Aggressive ad frequency (top churn risk)
- Perceived 'rigged' difficulty spikes
- Misleading UA creative vs actual gameplay
| - Aggressive ad-frequency drives high churn among long-term users
- Post-update technical regressions cause significant battery drain
|
| Pricing | freemium | freemium | freemium | freemium | freemium | freemium | freemium |
| Momentum | Maintenance | Intense | Active | Active | Maintenance | - | Active |
| Update Cadence | 4 versions, 2 majors/6mo, ~38d avg | 5 versions | 5 versions, ~10d avg | 5 versions, ~7d avg | 5 versions, 4 majors/6mo, ~313d avg | - | 5 versions, ~11d avg |
