About Arrhythmix
Arrhythmix is a free ECG quiz, released twice a week, every Monday and Thursday. Each one brings a short fictional case and an ECG drawn on standard paper, from rhythm strips to full 12-leads. Pick the diagnosis from six options in three tries. Afterwards, the key features are highlighted on the trace, with a teaching pearl.
How to play
- Read the short case and the ECG. Tap Zoom to enlarge it.
- Pick the diagnosis from six options. You get three tries.
- Each wrong pick unlocks a hint.
- Finish to see the key features highlighted on the trace.
Who it’s for
Students, nurses, paramedics, doctors and anyone learning ECG interpretation. Rhythm strips are usually gentler; 12-leads are harder.
Common questions
Is there a free ECG quiz?
Yes. Arrhythmix is a free ECG quiz with a new case every Monday and Thursday. Past ECGs make good practice too.
Are the ECGs real?
No. Every trace is computer-generated to show the textbook features, and every case is fictional. General education, not medical advice.
Is Arrhythmix free?
Yes. It's free to play in your browser, with no sign-up, no download and no ads.
When is the next ECG?
Every Monday and Thursday at midnight, Sydney time.
Past puzzles and answers · All medical games and quizzes
Try next: Panelysis (blood test quiz) · Opacitis (X-ray quiz) · Dxtective (daily diagnosis game)