I am Thinking of a Number

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Version 3.0.2

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Released: December 20, 2010

Updated: August 31, 2018

Platform: Web

License: GPLv3

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I am Thinking of a Number - the sophisticated number guesser.

It originates from an infamous PowerPoint game that made users guess a number from 1 to 1000. It has since evolved to HTML5, offering hints and increased flexibility.


  • Guess with a number set or an input field.
  • Choose any combination of integers to guess from.
  • Use hints to assist with guessing.
  • Playable on desktops, laptops, tablets, and smartphones.
  • Toggle between a light and dark theme.

Tags: Updated 2016, Dark mode

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