Tic-Tac-SightWords is a FREE educational application developed with Windows Presentation Foundation. This educational game combines learning sight words with the strategy of tic-tac-toe. Customize up to 9 levels of game play. Configure up to 20 words within each game level. Utilizes the Text-To-Speech engine built into the Windows operating system. Import and export sight words, enabling transporting words from computer to computer. Remembers all of your settings.
Source: http://www.DanOross.com/Products/Tic-Tac-SightWords/