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4 Dragons Sudoku

Review · Family · iOS

4 Dragons Sudoku

Reviewed: 21 Apr 2026

iOS

Ocean Media · 2014

Ludograph rating

C

Mixed

46 /100

Automated review

4 Dragons Sudoku is a puzzle game that provides a strong cognitive workout for problem-solving and strategic thinking, but contains advertisements.

06010030Benefit →Low risk →B 31 · R 11
The Ludograph reading, plotted from the published benefit and risk sub-scores.

Growth (BDS)

31

Risk (RIS)

11

Daily limit

120min

Age guidance

10+

Developmental benefits

B1Cognitive
0.56
B2Social-emotional
0.03
B3Motor
0.10

4 Dragons Sudoku offers a strong cognitive workout, enhancing problem-solving, strategic thinking, critical thinking, and memory. Its adaptive difficulty and vast number of puzzles provide sustained mental engagement.

Design risks

R1Compulsion-loop pressure
0.13
R2Monetization
0.17
R3Social risk
0.00

While generally low-risk, the free-to-play model may expose players to advertisements and prompts to upgrade to a premium version. The 'infinite play' aspect could lead to extended play sessions if not managed.

Content (not in risk score)

R4.1Violence Level
0.00
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 · DSA — Not yet assessed·GDPR-K — Not yet assessed·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.
  • GDPR-K:What Ludograph checks: whether age assurance and consent flows are designed for under-16s, in the spirit of GDPR Article 8.
  • 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.

ReviewedApr 2026Report a data error →How scores are calculated →

Parents ask…

Is 4 Dragons Sudoku safe for kids?

Ludograph gives 4 Dragons Sudoku a rating of 46/100. It delivers genuine benefits but carries design risks that deserve a close look.

How long should kids play 4 Dragons Sudoku?

Our session recommendation for 4 Dragons Sudoku 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 4 Dragons Sudoku?

While generally low-risk, the free-to-play model may expose players to advertisements and prompts to upgrade to a premium version. The 'infinite play' aspect could lead to extended play sessions if not managed.