Guess My Number — Higher or Lower Guessing Game
Play this free Guess My Number game. The computer picks a secret number in your chosen range and tells you whether each guess is too high or too low. Find it in as few guesses as you can — and discover the smart halving strategy along the way.
How to play
- Choose a range and press New Game.
- Enter a guess; the game says “too high” or “too low”.
- Use the clues to zero in on the secret number.
The smart strategy
Guessing the middle of the remaining range each time — a binary search — finds any number in very few tries. The game shows the theoretical best so you can compare.
Original price was: $109.99.$54.99Current price is: $54.99.
Frequently asked questions
What’s the best strategy?
Guess the middle of the possible range each time. This binary search finds the number in about log₂(range) guesses.
Can I change the range?
Yes — choose 1–10, 1–100, or 1–1000.
Original price was: $109.99.$54.99Current price is: $54.99.
Does it show how well I did?
Yes — it counts your guesses and shows the theoretical best for comparison.
Original price was: $109.99.$54.99Current price is: $54.99.
Looking to learn the math behind the game? Read the related lesson.
Original price was: $27.99.$17.99Current price is: $17.99.
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