Sudoku Now! Downloads

Current Version

Sudoku Now! Version 2.0.0

  • Download Now! (UK English for Windows)
  • Release date: 24 November 2017
  • File size: 2.3 MB
  • Although it appears functionally similar to version 1.5.1, there have been a number internal changes.
  • Subscription licence support added, to work with the new purchase options recently added to this website.
  • The installer is fully compatible with the latest version of Windows.
  • Requires a new v2.x licence key. Customers who purchased a v1.x licence key within the last three months can request a free upgrade.
  • Updated messages, help and licence agreement.
    View Revision History

Checking the Download

  • If you wish to check the authenticity of the downloaded files, you can check the SHA-512 hash of the files on your computer match those listed below, using HashMyFiles or similar.
  • If the results do not match the values given below, please download Sudoku Now! again from this website, and reinstall it.

SHA-512 Hash Values

  • For SudokuNowSetup200en.exe, the file downloaded from the above link:
    8217cbc18f7cdab61e4e4d2b9302cea650b1581ff087f72e3e7363ff6a67faef9368f9d08327ab1021d1d514532ac70ebd54d90129623d194302e19a7b299c18
  • For SudokuNow.exe, the main executable which normally gets installed in Neon Sine Software\Sudoku Now 2, located inside your Program Files or Program Files (x86) folder:
    7687d10eb90b4cdead95ff00bf420fc91bdc8ca63c9d7741db3f46c282b3116e46d5bacfb081e7d4f69c30bc0c04bf34653ab7f8565c42e4b32c79e85e917850

System Requirements

  • Almost any PC running Windows XP or later will be suitable.
  • It may still run under Windows 98, but this is no longer tested or supported.

Using the Download

  • After downloading the Sudoku Now! setup file (SudokuNowSetup200en.exe) open the file (e.g. double click it) and follow the on-screen instructions.
  • After installation, start Sudoku Now! from the Start menu, or the desktop shortcut if you created one during installation.
  • You may wish to begin by viewing the help file. This can be accessed either from the Start menu or by choosing Contents from the Help menu in Sudoku Now!
  • Remember, it is free to try for 10 days.
  • After 10 days, purchase a licence key to continue using it.

Previous Releases

Sudoku Now! Version 1.2.1

  • Download Now! (UK English for Windows)
  • Release date: 25 August 2006
  • File size: 2.2 MB
  • New features: pencil mode, highlight specific digit, pause facility and a new on-screen keypad 
    View Revision History

Checking the Download

  • If you wish to check the authenticity of the downloaded file, you can check the SHA-512 hash of the file on your computer match that listed below, using HashMyFiles or similar.
  • If the result does not match the value given below, please download Just Barcodes again from this website, and reinstall it.

SHA-512 Hash Values

  • For SudokuNowSetup121.exe, as downloaded:
    d633e0a4941dbf20cc31c055015a82d3b25b924000c372a701f7fae4433db9618232c4e66f2eb6b8567ee46d1164cc2980ebb4bb48277262ae977d3ae8d4f893

Sudoku Now! Version 1.1.0

  • Release date: 20 December 2005
  • The game is now more playable using only the mouse.

Sudoku Now! Version 1.0.0


  • Please see the revision history for more details and for information on older versions.