Review · Educational · Nintendo 3DS
Greco Kara no Chousenjou! Keisan no Yakata to Obake-Tachi: Wari-San
Reviewed: 01 Jun 2026
Nintendo 3DS
Media5 · 2013
Ludograph rating
Growth (BDS)
26
Risk (RIS)
2
Daily limit
120min
Age guidance
–
Developmental benefits
| B1 | Cognitive | 0.48 | |
| B2 | Social-emotional | 0.00 | |
| B3 | Motor | 0.10 | |
This educational game helps children develop strong math skills, particularly in division, through engaging problem-solving challenges. It fosters critical thinking, memory, and attention, essential for academic success.
Design risks
| R1 | Compulsion-loop pressure | 0.03 | |
| R2 | Monetization | 0.00 | |
| R3 | Social risk | 0.00 | |
This game presents minimal risks. While it may not offer extensive social or motor skill development, it avoids manipulative design, monetization pressures, and harmful content.
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: meets criteria·GDPR-K — Assessed: meets criteria·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. No dark pattern or child-targeting concerns found.
- 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. No privacy or child-targeting concerns found.
- 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.