Case library

Browse DxDetective cases

Pick a free case by story, difficulty, and play time. You will see the explanation after your final call.

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
Intro 8 min · 1 round

Severe Soreness After Team Practice

After a first intense practice on a hot day, Jay is unusually sore, exhausted, and less steady. Mara needs to learn what has changed since practice and whether he needs prompt help.

caregiver home safety pattern recognition
Intro 7 min · 1 round

Movement at the Surface of a Rain Barrel

Nia and Cal see tiny movements on their rain barrel after several warm days. They do not yet know whether the lid has shifted or whether other containers show the same change.

household observation garden routine pattern recognition
Intro 7 min · 1 round

Frost Building Inside a Freezer

Shelby finds new frost along one freezer wall. Omar suggests the busy weekend, but Shelby is unsure where it started or what changed nearby.

household observation home context pattern reasoning
Intro 7 min · 1 round

Keepsake Layers That Will Not Separate

Anna and Theo find several glossy keepsake layers stuck together after storage. They need to learn which pieces changed and where the box spent the year before separating anything.

household observation storage context pattern reasoning
Intro 7 min · 1 round

A Closet Smells Different After Rain

Kira notices an unfamiliar closet odor after rain, and it returns after another storm. Daniel suspects a stored item; neither knows where the smell is strongest.

household observation home context pattern reasoning
Intro 7 min · 1 round

An Unusual Pattern Inside a Pantry Package

Hannah finds strands and small bits inside a pantry package. Evan suspects an old spill; they do not yet know whether nearby packages or the shelf show the same change.

household observation package context pattern reasoning
Intro 8 min · 1 round

Continued Fatigue After an Illness

Nico has repeated next-day setbacks after ordinary school days or errands following an earlier illness. Elena is unsure which changes matter most to Priya at the clinic.

family caregiver symptom timeline pattern reasoning
Intro 8 min · 1 round

A Familiar Walk Takes More Effort

Marcus needs to pause on a familiar walk and feels less steady on stairs. Lena suspects the change has built over six weeks but has not yet compared it with his usual activity.

family caregiver everyday function pattern reasoning
Intro 7 min · 1 round

Shaky and Quiet Before Lunch

Mateo becomes shaky, quiet, and less responsive before lunch. Erin knows a student-specific plan exists, but must decide how to respond without making him a classroom topic.

school observation time pattern individual-plan handoff
Intro 7 min · 1 round

Dizzy Near the End of Field Day

Amara becomes dizzy and unusually quiet late in a hot outdoor event. Terrence is responsible for her and the waiting group as he chooses a next step.

school observation environmental context role-aware escalation
Intro 6 min · 1 round

Itching During Reading Circle

Imani scratches repeatedly during reading circle and withdraws when a classmate notices. Elena needs to decide how to respond without drawing the class's attention to Imani.

school observation student privacy role-aware escalation
Intro 7 min · 1 round

Feeling Unwell in Long Lines

Eli has several brief episodes of lightheadedness during long school-day lines. Alina needs to decide what to share with a clinician while respecting his privacy.

caregiver pattern recognition role-aware escalation
Hard 8 min · 1 round

Vomiting and Hard to Wake After Illness

Maya is vomiting after an illness and disrupted meals, and Ren has trouble waking her fully. Similar episodes happened before; Ren must judge the immediate concern and recall the earlier pattern.

caregiver pattern recognition role-aware escalation