Diagnostic reasoning game

DxDetective

Start with simple cases that help you decide what to ask, check, or rule out next. Each case keeps the answer hidden until you make the final call.

  • Play in your browser Start a case here without installing anything.
  • No account required Starter cases open without sign-in.
  • Session-only progress Progress is not saved across devices.
  • Educational game Use cases for practice, not medical advice.

Starter library

Choose a starter case without seeing the answer.

Intro 1 round

Cold, Flu, or Something Else?

Several people in one home feel tired and headachy, so the first guess might be a routine seasonal illness. This starter DxDetective case asks you to slow down, compare who feels worse, where symptoms change, and which clues make the household pattern matter.

starter reasoning observation triage
Intro 1 round

Small Puncture: Home Care or Get Help?

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

A small foot injury can look easy to handle, but the useful questions come from the story around it. This starter DxDetective case asks you to slow down, ask what happened, compare simple observations, and decide whether basic care is enough or the next step should escalate.

starter reasoning observation triage
Intro 1 round

Red Eye After Practice: Routine or Risky?

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

A student has one red, uncomfortable eye after practice and wants a quick answer. This starter DxDetective case asks you to slow down, check for warning signs, ask targeted questions, and decide whether the problem can wait or needs eye-specific guidance today.

starter reasoning observation triage
Intro 1 round

The Practice That Felt Too Hard?

After a demanding day of activity, someone at home feels wiped out in a way that does not quite match ordinary soreness. This starter DxDetective case asks the player to compare exertion, heat, hydration, timing, and function before choosing a next action.

caregiver home safety pattern recognition
Intro 1 round

The Weekend That Followed Them Home?

A few days after a weekend outside, one person feels run down and notices a skin change that is easy to dismiss at first. This starter DxDetective case keeps the opening broad: the pattern could fit irritation, a routine bug bite, a viral illness, a skin infection, an allergic reaction, or another outdoor follow-up problem.

caregiver home safety pattern recognition
Intro 1 round

The Dinner That Did Not Add Up?

An evening meal seems ordinary, but symptoms show up later in a way that makes the first explanation uncertain. This starter DxDetective case asks the player to separate stomach upset, anxiety, reflux, a short illness, a common allergy pattern, medication effects, and emergency-reaction risk without naming the hidden trigger.

caregiver home safety pattern recognition

Answer vocabulary

Possible smart calls across the library.

These final-call phrases come from current free and paid DxDetective cases. They are listed only as a library-wide set, so they do not show which case each answer solves.

  • Leave the home, get fresh air, and call for urgent guidance.
  • Clean it, cover it, and seek timely clinical guidance.
  • Get urgent eye-specific guidance today.
  • Stop activity and contact a health care hotline or clinician.
  • Describe the timing, size change, symptoms, and outdoor context today.
  • Check emergency signs first, then bring the repeated timing pattern to a healthcare provider.

Room codes

Join a guided game only when a host gives you a code.

Room play is for guided practice. Most visitors should start with a solo starter case.

Open room preview