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Knock-Knock

Review · Action · Xbox One · PlayStation 4 · macOS

Knock-Knock

Reviewed: 16 May 2026

Xbox One · PlayStation 4 · macOS · PC · Linux · Nintendo Switch · PS Vita · Android · iOS

Ice-Pick Lodge · 2013

Ludograph rating

C

Mixed

56 /100

Automated review
06010030Benefit →Low risk →B 40 · R 4
The Ludograph reading, plotted from the published benefit and risk sub-scores.

Growth (BDS)

40

Risk (RIS)

4

Daily limit

120min

Age guidance

13+

Developmental benefits

B1Cognitive
0.54
B2Social-emotional
0.20
B3Motor
0.35

Knock-Knock challenges players' memory and critical thinking as they navigate a constantly changing environment, piece together cryptic clues, and make strategic decisions under pressure. The game fosters adaptive thinking as players must learn to interpret subtle environmental cues and adapt their strategies to evade unseen threats. It also encourages observation and spatial reasoning as players must meticulously explore their surroundings to find vital objects and safe havens.

Design risks

R1Compulsion-loop pressure
0.07
R2Monetization
0.00
R3Social risk
0.06

The primary risk of Knock-Knock lies in its strong horror elements and psychological intensity, which could be unsettling for younger or more sensitive players. The game's ambiguous narrative and surreal atmosphere might also be confusing or frustrating for those who prefer clear objectives and straightforward storytelling. While there are no direct monetization or social risks, the game's focus on isolation and fear could have an impact on emotional well-being if played excessively.

Content (not in risk score)

R4.1Violence Level
0.33
R4.2Sexual Content
0.00
R4.3Language
0.33
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 — 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.: 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.
  • 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.

Avg playtime~3 hReviewedMay 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 lies in its strong horror elements and psychological intensity, which could be unsettling for younger or more sensitive players. The game's ambiguous narrative and surreal atmosphere might also be confusing or frustrating for those who prefer clear objectives and straightforward storytelling. While there are no direct monetization or social risks, the game's focus o