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Marbles (jerrrber)

Review · Educational · Web

Marbles (jerrrber)

Reviewed: 11 May 2026

Web

jerrrber · 2023

Ludograph rating

D

Caution

40 /100

Marbles is a text-based educational story that develops reading, problem solving, and critical thinking through narrative choices, but has a low Ludograph rating.

06010030BenefitLow riskB 25 · R 0
The Ludograph reading, plotted from the published benefit and risk sub-scores.

Growth (BDS)

25

Risk (RIS)

0

Daily limit

120min

Age guidance

Developmental benefits

B1Cognitive
0.40
B2Social-emotional
0.10
B3Motor
0.10

Marbles is an educational, text-based story that primarily benefits reading comprehension, critical thinking, and problem-solving through its narrative choices. It encourages engagement with a story and can foster empathy.

Design risks

R1Compulsion-loop pressure
0.00
R2Monetization
0.00
R3Social risk
0.00

This game presents minimal risks. It lacks any monetization, compulsion-loop design mechanics, or social interaction features that could lead to negative outcomes. Content risks are also absent.

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 · 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 Marbles (jerrrber) safe for kids?

Ludograph gives Marbles (jerrrber) a rating of 40/100. There are notable risks worth knowing before letting kids play.

How long should kids play Marbles (jerrrber)?

Our session recommendation for Marbles (jerrrber) 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 Marbles (jerrrber)?

This game presents minimal risks. It lacks any monetization, compulsion-loop design mechanics, or social interaction features that could lead to negative outcomes. Content risks are also absent.