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Binary Switch

Small switches. A clear number.

A little challenge awaits.

3 min · No account. Just you and the game.

Stay on this page during your run.
THE SHORT VERSION

How to play

Use eight on/off switches to build a target decimal number in binary. Each lit switch contributes its labeled power of two.

  1. Toggle the 128, 64, 32, 16, 8, 4, 2 and 1 switches, then check the total.
  2. Build 10 targets within 3 minutes. An incorrect check costs a point and keeps the same target.
  3. Your best stays on this device. Share a seeded challenge with a friend; a solved run beats an unfinished run, then points and time decide.

A few useful details

How do I complete Binary Switch?

Build 10 targets within 3 minutes. An incorrect check costs a point and keeps the same target.

How long is a Binary Switch round?

3 min. The timer and current objective are shown while you play. You can start a fresh run whenever you like.

Can I play free and challenge a friend?

Yes. No account or download is needed. After a run, share its challenge link so your friend gets the same seeded setup. Your personal records stay on this device.