Upgrade to the latest version 11.0 of Sudoku Up 2021 (May 25, 2021)

All Customers who purchased Sudoku Up (full version or upgrade) after May 24, 2010, will receive a free upgrade to the latest version 11.0. An email will be sent to all Customers eligible for the upgrade.

  • If you do not remember the date of purchase of Sudoku Up OR
  • If you have not yet received your Activation Code via email from TreeCardGames.com, please complete the form below:

(You'll receive the required information at your Current Email address)

Email at the time you purchased Sudoku Up