Review · Family · iOS
山手線黒猫宝探し
Reviewed: 30 Jun 2026
iOS
QOLP, K.K. · 2018
Ludograph rating
Growth (BDS)
14
Risk (RIS)
5
Daily limit
120min
Age guidance
10+
Developmental benefits
| B1 | Cognitive | 0.20 | |
| B2 | Social-emotional | 0.07 | |
| B3 | Motor | 0.10 | |
This unique storybook app encourages reading and engagement with a narrative while experiencing a real-world train journey. It offers a gentle, family-friendly experience with item collection and character interactions, fostering mild empathy and positive social themes.
Design risks
| R1 | Compulsion-loop pressure | 0.03 | |
| R2 | Monetization | 0.13 | |
| R3 | Social risk | 0.00 | |
The primary risk is mild child targeting due to its family-friendly nature and item collection mechanics, which could encourage extended play sessions while on the train. However, it lacks significant compulsion-loop design, monetization pressures, or social/content risks.
Content (not in risk score)
| R4.1 | Violence Level | 0.00 | |
| R4.2 | Sexual Content | 0.00 | |
| R4.3 | Language | 0.00 | |
| R4.4 | Substance References | 0.00 | |
| R4.5 | Fear / Horror | 0.00 | |
Content risk is displayed separately and does not affect the time recommendation.
Regulatory design checks · DSA — Assessed: concerns noted·GDPR-K — Assessed: concerns noted·ODDS — Assessed: meets criteria
- DSA:What Ludograph checks: whether the game's design gives minors the transparency the EU Digital Services Act expects: plain terms, honest defaults, and clear reporting routes.: Estimated from review data. Likely violations: monetisation that deliberately targets children.
- GDPR-K:What Ludograph checks: whether age assurance and consent flows are designed for under-16s, in the spirit of GDPR Article 8.: Estimated from review data. Likely violations: profiling or targeting of children for marketing.
- ODDS:What Ludograph checks: whether paid random-reward drop rates are disclosed, as required in China, Japan and South Korea.: Estimated from review data. No paid random-reward mechanics found, so drop-rate disclosure requirements do not apply.
These reflect Ludograph's assessment of the game's design practices against each framework's criteria, not a legal compliance determination.