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Ninja's Duel

Review · Action · Web

Ninja's Duel

Reviewed: 10 May 2026

Web

ThaiureSama · 2020

Ludograph rating

D

Caution

35 /100

Ninja's Duel is a fighting game that builds hand-eye coordination and basic problem solving, with mild fantasy violence.

06010030BenefitLow riskB 21 · R 0
The Ludograph reading, plotted from the published benefit and risk sub-scores.

Growth (BDS)

21

Risk (RIS)

0

Daily limit

120min

Age guidance

7+

Developmental benefits

B1Cognitive
0.24
B2Social-emotional
0.00
B3Motor
0.45

Ninja's Duel is a simple fighting game that can help develop hand-eye coordination, fine motor skills, reaction time, and some basic problem-solving and strategic thinking in short bursts. Its straightforward nature makes it easy to pick up and play.

Design risks

R1Compulsion-loop pressure
0.00
R2Monetization
0.00
R3Social risk
0.00

The game's primary risk is mild fantasy violence. There are no other significant risks related to monetization, social pressure, or manipulative design.

Content (not in risk score)

R4.1Violence Level
0.33
R4.2Sexual Content
0.00
R4.3Language
0.00
R4.4Substance References
0.00
R4.5Fear / Horror
0.00

Content risk is displayed separately and does not affect the time recommendation.

Regulatory design checks · DSAAssessed: meets criteria·GDPR-KAssessed: meets criteria·ODDSAssessed: 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.

Parents ask…

Is Ninja's Duel safe for kids?

Ludograph gives Ninja's Duel a rating of 35/100, recommended for ages 7 and up. There are notable risks worth knowing before letting kids play.

What age is Ninja's Duel appropriate for?

Ludograph's rubric recommends a minimum age of 7+ for Ninja's Duel, based on benefits, risks, and content review.

How long should kids play Ninja's Duel?

Our session recommendation for Ninja's Duel is up to 120 minutes per day. It is derived from the game's own structure (natural stopping points, compulsion-loop design, monetization pressure, and social dynamics), not from a universal screen-time dose.

Session recommendations are design-based heuristics. Evidence linking specific daily durations to child outcomes is limited, and context matters as much as time; treat this as a starting point for household rules, not a clinical threshold.

What are the main risks of Ninja's Duel?

The game's primary risk is mild fantasy violence. There are no other significant risks related to monetization, social pressure, or manipulative design.