| Core Identity |
| Developer | Kazunari Hiyoshi | Snapbreak Games | International Education and Communication Investment Corporation | 晓翔 黄 | Playstack Ltd | TTN Games | Hangzhou Mofun Interactive Technology Co., Ltd | Hirokazu Uno | ABI GLOBAL LTD. | Metin Yucel |
| Category | Games | Games | Games | Games | Games | Puzzle | Games | Games | Games | Games |
| Platform | Android, iOS | Android, iOS | iOS | iOS | Android, iOS | Android | iOS | iOS, Android | Android, iOS | iOS |
| Store Metrics |
| Rating | 4.5 / 5 | 4.9 / 5 | 4.6 / 5 | 3.9 / 5 | 4.7 / 5 | 4.3 / 5 | 4.8 / 5 | 4.7 / 5 | 4.7 / 5 | 2.3 / 5 |
| Ratings Count | 19 | 12,042 | 343 | 159 | 56 | 466 | 120 | 133 | 3,751 | 393 |
| Price | Free | Free | Free | Free | Free | Free | Free | Free | Free | Free |
| Release Date | Apr 4, 2022 | Apr 10, 2024 | Oct 10, 2024 | Feb 14, 2013 | Feb 6, 2026 | Sep 3, 2018 | Aug 27, 2024 | Dec 29, 2021 | Apr 1, 2021 | Oct 10, 2014 |
| Last Updated | Apr 9, 2022 | Apr 7, 2026 | Jan 2, 2026 | Feb 14, 2013 | May 12, 2026 | May 17, 2026 | Dec 6, 2024 | Jun 27, 2025 | Nov 3, 2021 | Jun 8, 2019 |
| Sentiment & Reviews |
| Sentiment | positive | excellent | - | - | positive | - | - | mixed | negative | - |
| Score | 70/100 | 85/100 | - | - | 78/100 | - | - | 50/100 | 35/100 | - |
| Praises | - The core gameplay loop provides a satisfying and well-executed challenge for players
| - High-quality puzzle design and visual aesthetics create an immersive experience for players
- Generous free-to-play trial allows users to experience enough content before purchasing
- Smooth performance and lack of intrusive advertisements enhance the overall gameplay experience
| - | - | - Logical deduction puzzles provide a rewarding challenge without relying on excessive hints or frustration
- Distinctive art style and narrative depth create a memorable atmosphere for mystery game fans
- Mobile accessibility allows for flexible play sessions during short breaks or commutes
| - | - | - | - Nostalgic gameplay loop provides a familiar and engaging experience for returning long-term players
- Simple one-handed control scheme allows for quick sessions during short periods of downtime
| - |
| Complaints | - The final stage difficulty requires external tools to solve effectively without frustration
| - Limited content length relative to the price point creates value dissatisfaction
- Hidden interactive elements are difficult to identify on smaller mobile screens
- Technical purchase failures prevent users from accessing the full game content
| - | - | - Progress loss and save file corruption occur frequently when the application quits unexpectedly
- In-app purchase restoration fails to unlock content for users who already paid
- Missing achievement unlocks for specific late-game scenarios frustrate completionist players
| - | - | - Excessive physical force required to register touch inputs during active gameplay sessions
| - Excessive ad frequency interrupts gameplay flow and makes the experience feel unplayable for users
- In-app purchases to remove advertisements fail to provide the promised ad-free experience
- Forced internet connectivity requirements serve primarily to facilitate aggressive advertisement delivery during sessions
| - |
| Requests | - Extended content length is requested to provide a more substantial play experience
| - Development of a sequel or additional content modules to extend the game
| - | - | - Transparent pricing models are requested to avoid confusion regarding free-to-play versus paid content
- Expansion of the franchise with additional cases and sequels for mobile platforms
| - | - | - | - Additional levels are requested to extend the current short and limited content progression
| - |
| Strategic Intel |
| Strengths | - Atmospheric desert-ruin setting sustains initial curiosity
- Core gameplay loop provides a satisfying challenge
| - 11-language localization drives global install velocity
- 3D mechanical puzzle loop sustains high session quality
- Freemium trial conversion model captures casual interest
| - | - | - Deduction-based gameplay mechanics sustain long-term player engagement
- Ad-free premium model builds brand authority among high-intent users
| - | - | - Constant-save mechanism reduces session abandonment
- Numeric color-labeling accessibility expands addressable market
| - Interactive comic format drives session length via choice-based narrative
- One-handed control scheme lowers barrier to entry for casual sessions
| - |
| Weaknesses | - Final stage difficulty spike forces external note-taking
- Content length is insufficient for long-term retention
- Reliance on ad-inventory limits revenue per user
| - Purchase button failures block revenue in the latest release
- Content volume is insufficient for the price point
- Small interactive triggers frustrate mobile users
| - | - | - Recurring save-data loss on unexpected app closure
- In-app purchase restoration failures for paying users
| - | - | - High physical force required for touch inputs
- Zero IAP monetization limits revenue per user
- Low review volume indicates weak organic discovery
| - Ad-removal purchase fails to deliver promised ad-free experience
- Forced internet requirement prevents offline play
- Content cap limits long-term retention
| - |
| Pricing | free | freemium | free | free | paid | free | free | free | freemium | free |
| Momentum | Zombie | Maintenance | - | - | Maintenance | - | - | Maintenance | Maintenance | - |
| Update Cadence | 3 versions | 5 versions, ~63d avg | - | - | 4 versions, ~57d avg | - | - | 5 versions | 5 versions, 1 majors/6mo, ~409d avg | - |
