Free diagnostic reasoning game

DxDetective

Play a free case, compare clues, and choose what to check before you make your final call.

DxDetective uses fictional cases for educational play. It does not assess, diagnose, or manage symptoms for you or anyone else.

Play in your browser; no app download is available yet. No account is needed, and progress does not sync between devices.

Start playing

Choose a case to start with.

Intro 8 min · 1 round

Headaches That Ease Away From Home

Mara, her partner, and their child feel tired and headachy at home. None has a high fever. They seem to improve after time away and feel worse again in the evening.

starter reasoning observation triage
Intro 7 min · 1 round

A Small Foot Puncture During Cleanup

Dedicated to school nurses and coaches who ask one more good question.

Eli has a small, sore puncture on his foot after cleanup. His caregiver needs to learn what he stepped on, what he was wearing, and when it happened.

starter reasoning observation triage
Intro 7 min · 1 round

One Red Eye After Practice

Dedicated to students who report small changes before they become big ones.

Sam has one red, uncomfortable eye after practice. His caregiver needs to ask about pain, vision changes, contact lens use, and a possible impact or splash before choosing a next step.

starter reasoning observation triage
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More to explore

Three caregiver stories to try.

Notice what changes, choose which details to check, and see how each fictional story unfolds.

Explore the three cases