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Knock Knock!

Review · Indie · PC

Knock Knock!

Reviewed: 01 Jul 2026

PC

Inner Realm Studios · 2026

Ludograph rating

C

Mixed

56 /100

Automated review
06010030Benefit →Low risk →B 39 · R 2
The Ludograph reading, plotted from the published benefit and risk sub-scores.

Growth (BDS)

39

Risk (RIS)

2

Daily limit

120min

Age guidance

13+

Developmental benefits

B1Cognitive
0.66
B2Social-emotional
0.03
B3Motor
0.25

Knock Knock! is a unique horror experience that significantly develops cognitive skills such as spatial awareness, critical thinking, problem-solving, and memory through its innovative audio-only navigation. It offers a highly accessible experience for visually-impaired players, promoting inclusivity in gaming.

Design risks

R1Compulsion-loop pressure
0.03
R2Monetization
0.00
R3Social risk
0.00

The primary risk of Knock Knock! is its horror content, which is designed to evoke fear and discomfort through unsettling audio. While it does not feature manipulative monetization or social mechanics, the intense atmosphere may not be suitable for all players, particularly younger or more sensitive individuals.

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
1.00

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.

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

Parents ask…

Is Knock Knock! safe for kids?

Ludograph gives Knock Knock! a rating of 56/100, recommended for ages 13 and up. It delivers genuine benefits but carries design risks that deserve a close look.

What age is Knock Knock! appropriate for?

Ludograph's rubric recommends a minimum age of 13+ for Knock Knock!, based on benefits, risks, and content review.

How long should kids play Knock Knock!?

Our session recommendation for Knock Knock! 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 Knock Knock!?

The primary risk of Knock Knock! is its horror content, which is designed to evoke fear and discomfort through unsettling audio. While it does not feature manipulative monetization or social mechanics, the intense atmosphere may not be suitable for all players, particularly younger or more sensitive individuals.