Feedback on DDD architecture in application

In some days I have created my first simple Silverlight application. 
Other technics I have used is Linq, WCF, DDD and TDD. I would 
appreciate some feedback on the DDD part of the application.
You can download the source code from this address: 
http://dev.levasunt.nu/MyMemory.zip

The code is coded in C# Visual Studio 2008.

The game you can find on this address: http://dev.levasunt.nu

Regards
Krister

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