Cognitive Games

Short rounds for memory, attention, and spatial skills.

Browser-only. No account. Scores live on this device; anonymous pageviews only.

Background

About scores and cognitive science

Ratings compare to your own past runs on this device, not to a national norm.

Data and privacy

Anonymous pageviews are sent to PostHog (us.i.posthog.com) so I can see visit counts. No account, no personal data, no cross-site tracking.