Tic Tac Toe

I've realesed a small game on my own. It's a re-make of the board game with the same name. The game is made in C# with XNA and ported over to Silverlight with Silversprite.
The game is in the beta phase and every comment is appreciated.
http://silverarcade.com/games/tic-tac-toe/beta
You'll need Silverlight from Microsoft to play this game (don't know how it is on other platforms than windows and IE). But Silverlight is small and free!