Made for curious minds.

A little discovery, every day.

Deductidle is a free puzzle game made by Dennis. Each day brings three stages drawn from words, numbers, shapes, emoji and cards. The fun is in testing an idea and spotting the rule that connects the clues.

No timer, no account. Take your time, ask for a hint, and come back tomorrow.

Your progress

Your daily progress, settings and streak are saved in this browser. They don't automatically sync between devices or domains. Clearing this site's browser data clears those saves.

What gets sent

The game sends your test examples and answer checks to its Cloudflare-hosted server to evaluate the secret rule. This version does not include advertising or third-party analytics scripts. Cloudflare processes web requests to deliver and protect the site.