A classic sequence, made playable

FizzBuzz for players, learners, and programmers.

Take turns against a computer that never slips, chase the top 25, then look under the hood at the tiny problem that has become a surprisingly durable coding prompt.

Sequence preview

  1. 1number
  2. 2number
  3. Fizzmultiple of 3
  4. 4number
  5. Buzzmultiple of 5
  6. FizzBuzzmultiple of 15

Play it

Choose who starts, answer under the clock, and see how far you can get before a mistake.

Learn it

Skimmable rules explain factors, multiples, and the answer pattern without assuming code knowledge.

Inspect it

Compare clean FizzBuzz implementations in JavaScript, Python, and Go.