The classic Tetris game as Windows Forms control
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This is just plain old Tetris, written in C# and implemented as a Windows Forms control, so you can insert it in your own .NET application. I assume you have played Tetris before and know the rules of this simple but interesting game. Download full source code: http://users.telenet.be/serhiy.perevoznyk/download/Karna.Tetris.zip