File list (Check if you may need any files):
YYTetris
........\YYTetris
........\........\App.xaml
........\........\App.xaml.cs
........\........\Bin
........\........\...\Debug
........\........\GameStauts.cs
........\........\Helper.cs
........\........\obj
........\........\...\Debug
........\........\...\.....\App.g.cs
........\........\...\.....\Helper.g.cs
........\........\...\.....\Page.g.cs
........\........\...\.....\Part
........\........\...\.....\Piece
........\........\...\.....\.....\Block.g.cs
........\........\...\.....\.....\N.g.cs
........\........\...\.....\.....\N2.g.cs
........\........\...\.....\Refactor
........\........\...\.....\TempPE
........\........\...\.....\YYTetris.csproj.FileListAbsolute.txt
........\........\Page.xaml
........\........\Page.xaml.cs
........\........\Piece
........\........\.....\Block.xaml
........\........\.....\Block.xaml.cs
........\........\.....\I.cs
........\........\.....\L.cs
........\........\.....\L2.cs
........\........\.....\N.cs
........\........\.....\N2.cs
........\........\.....\O.cs
........\........\.....\PieceBase.cs
........\........\.....\T.cs
........\........\Properties
........\........\..........\AppManifest.xml
........\........\..........\AssemblyInfo.cs
........\........\UIControl.cs
........\........\YYTetris.csproj
........\........\YYTetris.csproj.user
........\YYTetris.sln
........\YYTetris.Web
........\............\App_Data
........\............\bin
........\............\...\de
........\............\...\es
........\............\...\fr
........\............\...\it
........\............\...\ja
........\............\...\ko
........\............\...\zh-Hans
........\............\...\zh-Hant
........\............\ClientBin
........\............\.........\YYTetris.xap
........\............\Default.aspx
........\............\Default.aspx.cs
........\............\Default.aspx.designer.cs
........\............\obj
........\............\...\Debug
........\............\...\.....\Refactor
........\............\...\.....\TempPE
........\............\...\.....\YYTetris.Web.csproj.FileListAbsolute.txt
........\............\Properties
........\............\..........\AssemblyInfo.cs
........\............\Silverlight.js
........\............\Web.config
........\............\YYTetris.Web.csproj
........\............\YYTetris.Web.csproj.user
........\............\YYTetrisTestPage.aspx
........\............\YYTetrisTestPage.html