1) Choose a difficulty. 2) Press Start. 3) Type a number in the shown range and hit Guess. Use the Midpoint button for the optimal first try.

What are challenge links?

They encode difficulty and a seed so friends get the exact same hidden number. Click Share to copy the link.

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Number Guessing

It's simple: Pick difficulty → Press Start → Type a number & hit Guess. Try the Midpoint helper for a smart first move.

Difficulty: ↩︎ Enter = Guess N = New H = Hint

Attempts

00:00

Time

Best (attempts · time)

Win streak

Press Start to begin.

Range: 1-50

Pro tip: Try the Midpoint button first (binary search style), then go higher or lower based on feedback.