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Nonagon Infinity & The Opening of the Door

Review · Platformer · PC

Nonagon Infinity & The Opening of the Door

Reviewed: 01 May 2026

PC

Milkbar Lads · 2018

Ludograph rating

C

Mixed

46 /100

Automated review

Nonagon Infinity & The Opening of the Door is a platformer that builds problem solving and spatial awareness, but its looping music might encourage prolonged play.

06010030Benefit →Low risk →B 30 · R 5
The Ludograph reading, plotted from the published benefit and risk sub-scores.

Growth (BDS)

30

Risk (RIS)

5

Daily limit

120min

Age guidance

7+

Developmental benefits

B1Cognitive
0.42
B2Social-emotional
0.00
B3Motor
0.45

This game offers a unique and diverse cognitive experience through its multi-genre level design, encouraging problem-solving, spatial awareness, and creative thinking. The adaptive challenge of shifting game mechanics and the requirement for memory and attention to detail provide a stimulating environment for players.

Design risks

R1Compulsion-loop pressure
0.10
R2Monetization
0.00
R3Social risk
0.00

The primary risk identified is the potential for infinite play due to the looping nature of the album's music, which could encourage prolonged engagement. The flashing elements in the game could also be a risk for sensitive individuals. There is minimal social or emotional development and low violence.

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 · 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.

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

Parents ask…

Is Nonagon Infinity & The Opening of the Door safe for kids?

Ludograph gives Nonagon Infinity & The Opening of the Door a rating of 46/100, recommended for ages 7 and up. It delivers genuine benefits but carries design risks that deserve a close look.

What age is Nonagon Infinity & The Opening of the Door appropriate for?

Ludograph's rubric recommends a minimum age of 7+ for Nonagon Infinity & The Opening of the Door, based on benefits, risks, and content review.

How long should kids play Nonagon Infinity & The Opening of the Door?

Our session recommendation for Nonagon Infinity & The Opening of the Door 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 Nonagon Infinity & The Opening of the Door?

The primary risk identified is the potential for infinite play due to the looping nature of the album's music, which could encourage prolonged engagement. The flashing elements in the game could also be a risk for sensitive individuals. There is minimal social or emotional development and low violence.