Outbreak

You're the public-health team — flatten the curve by pushing the effective reproduction number under 1 before infections blow past the cap.

How to play

Each turn you allocate a limited budget across four levers — Testing, Distancing, Quarantine and Vaccine — while a live dial shows the effective R your plan would produce. Get R under 1.00 (the dial turns green) and commit the week to advance the disease model. Keep infections below the cap until the epidemic burns out.

• Every lever spends from a fixed weekly budget — you can't max them all
• One lever alone saturates; a balanced response works better on big outbreaks
• Watch the epidemic curve and the immune line grow on the chart

Controls

• Desktop: drag the four sliders, then click Advance the week; Clear plan resets your allocation
• Phone & tablet: drag the sliders and tap the on-screen buttons — fully touch-friendly

Game modes

• Difficulty: Easy, Medium or Hard scenarios
• Daily shared scenario or endless Practice

Tips & strategy

• Spend early — suppressing spread before the peak saves the most budget overall
• Vaccination pays off late by shrinking the susceptible pool permanently
• Aim to keep R just under 1 rather than overspending to crush it

What you'll learn

Outbreak is an epidemiology strategy game built on a turn-based SIR disease model, teaching how infections spread and can be contained.

• Skills: epidemiology, the SIR model, exponential spread, public-health strategy
• Best for: roughly grades 8–12 (ages 13+)
• For parents & teachers: a model-based look at how diseases move.

About Outbreak

Outbreak is an original epidemiology strategy game built around a turn-based SIR disease model. Play it free in your browser, no download needed.

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