diff --git a/build.cmd b/build.cmd
index 553e392..7d4894c 100755
--- a/build.cmd
+++ b/build.cmd
@@ -1,40 +1,2 @@
-@echo off
-cd %~dp0
-
-SETLOCAL
-SET NUGET_VERSION=latest
-SET CACHED_NUGET=%LocalAppData%\NuGet\nuget.%NUGET_VERSION%.exe
-SET BUILDCMD_KOREBUILD_VERSION=
-SET BUILDCMD_DNX_VERSION=
-
-IF EXIST %CACHED_NUGET% goto copynuget
-echo Downloading latest version of NuGet.exe...
-IF NOT EXIST %LocalAppData%\NuGet md %LocalAppData%\NuGet
-@powershell -NoProfile -ExecutionPolicy unrestricted -Command "$ProgressPreference = 'SilentlyContinue'; Invoke-WebRequest 'https://dist.nuget.org/win-x86-commandline/%NUGET_VERSION%/nuget.exe' -OutFile '%CACHED_NUGET%'"
-
-:copynuget
-IF EXIST .nuget\nuget.exe goto restore
-md .nuget
-copy %CACHED_NUGET% .nuget\nuget.exe > nul
-
-:restore
-IF EXIST packages\Sake goto getdnx
-IF "%BUILDCMD_KOREBUILD_VERSION%"=="" (
-    .nuget\nuget.exe install KoreBuild -ExcludeVersion -o packages -nocache -pre
-) ELSE (
-    .nuget\nuget.exe install KoreBuild -version %BUILDCMD_KOREBUILD_VERSION% -ExcludeVersion -o packages -nocache -pre
-)
-.nuget\NuGet.exe install Sake -ExcludeVersion -Source https://www.nuget.org/api/v2/ -Out packages
-
-:getdnx
-IF "%BUILDCMD_DNX_VERSION%"=="" (
-    SET BUILDCMD_DNX_VERSION=latest
-)
-IF "%SKIP_DNX_INSTALL%"=="" (
-    CALL packages\KoreBuild\build\dnvm install %BUILDCMD_DNX_VERSION% -runtime CoreCLR -arch x86 -alias default
-    CALL packages\KoreBuild\build\dnvm install default -runtime CLR -arch x86 -alias default
-) ELSE (
-    CALL packages\KoreBuild\build\dnvm use default -runtime CLR -arch x86
-)
-
-packages\Sake\tools\Sake.exe -I packages\KoreBuild\build -f makefile.shade %*
+@ECHO OFF
+PowerShell -NoProfile -NoLogo -ExecutionPolicy unrestricted -Command "[System.Threading.Thread]::CurrentThread.CurrentCulture = ''; [System.Threading.Thread]::CurrentThread.CurrentUICulture = '';& '%~dp0build.ps1' %*; exit $LASTEXITCODE"
\ No newline at end of file
diff --git a/build.ps1 b/build.ps1
new file mode 100644
index 0000000..8f2f996
--- /dev/null
+++ b/build.ps1
@@ -0,0 +1,67 @@
+$ErrorActionPreference = "Stop"
+
+function DownloadWithRetry([string] $url, [string] $downloadLocation, [int] $retries) 
+{
+    while($true)
+    {
+        try
+        {
+            Invoke-WebRequest $url -OutFile $downloadLocation
+            break
+        }
+        catch
+        {
+            $exceptionMessage = $_.Exception.Message
+            Write-Host "Failed to download '$url': $exceptionMessage"
+            if ($retries -gt 0) {
+                $retries--
+                Write-Host "Waiting 10 seconds before retrying. Retries left: $retries"
+                Start-Sleep -Seconds 10
+
+            }
+            else 
+            {
+                $exception = $_.Exception
+                throw $exception
+            }
+        }
+    }
+}
+
+cd $PSScriptRoot
+
+$repoFolder = $PSScriptRoot
+$env:REPO_FOLDER = $repoFolder
+
+$koreBuildZip="https://github.com/aspnet/KoreBuild/archive/dev.zip"
+if ($env:KOREBUILD_ZIP)
+{
+    $koreBuildZip=$env:KOREBUILD_ZIP
+}
+
+$buildFolder = ".build"
+$buildFile="$buildFolder\KoreBuild.ps1"
+
+if (!(Test-Path $buildFolder)) {
+    Write-Host "Downloading KoreBuild from $koreBuildZip"    
+    
+    $tempFolder=$env:TEMP + "\KoreBuild-" + [guid]::NewGuid()
+    New-Item -Path "$tempFolder" -Type directory | Out-Null
+
+    $localZipFile="$tempFolder\korebuild.zip"
+    
+    DownloadWithRetry -url $koreBuildZip -downloadLocation $localZipFile -retries 6
+
+    Add-Type -AssemblyName System.IO.Compression.FileSystem
+    [System.IO.Compression.ZipFile]::ExtractToDirectory($localZipFile, $tempFolder)
+    
+    New-Item -Path "$buildFolder" -Type directory | Out-Null
+    copy-item "$tempFolder\**\build\*" $buildFolder -Recurse
+
+    # Cleanup
+    if (Test-Path $tempFolder) {
+        Remove-Item -Recurse -Force $tempFolder
+    }
+}
+
+&"$buildFile" $args
\ No newline at end of file
diff --git a/build.sh b/build.sh
index da4e3fc..f420810 100755
--- a/build.sh
+++ b/build.sh
@@ -1,43 +1,46 @@
 #!/usr/bin/env bash
+repoFolder="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd $repoFolder
 
-if test `uname` = Darwin; then
-    cachedir=~/Library/Caches/KBuild
-else
-    if [ -z $XDG_DATA_HOME ]; then
-        cachedir=$HOME/.local/share
-    else
-        cachedir=$XDG_DATA_HOME;
+koreBuildZip="https://github.com/aspnet/KoreBuild/archive/dev.zip"
+if [ ! -z $KOREBUILD_ZIP ]; then
+    koreBuildZip=$KOREBUILD_ZIP
+fi
+
+buildFolder=".build"
+buildFile="$buildFolder/KoreBuild.sh"
+
+if test ! -d $buildFolder; then
+    echo "Downloading KoreBuild from $koreBuildZip"
+    
+    tempFolder="/tmp/KoreBuild-$(uuidgen)"    
+    mkdir $tempFolder
+    
+    localZipFile="$tempFolder/korebuild.zip"
+    
+    retries=6
+    until (wget -O $localZipFile $koreBuildZip 2>/dev/null || curl -o $localZipFile --location $koreBuildZip 2>/dev/null)
+    do
+        echo "Failed to download '$koreBuildZip'"
+        if [ "$retries" -le 0 ]; then
+            exit 1
+        fi
+        retries=$((retries - 1))
+        echo "Waiting 10 seconds before retrying. Retries left: $retries"
+        sleep 10s
+    done
+    
+    unzip -q -d $tempFolder $localZipFile
+  
+    mkdir $buildFolder
+    cp -r $tempFolder/**/build/** $buildFolder
+    
+    chmod +x $buildFile
+    
+    # Cleanup
+    if test ! -d $tempFolder; then
+        rm -rf $tempFolder  
     fi
 fi
-mkdir -p $cachedir
-nugetVersion=latest
-cachePath=$cachedir/nuget.$nugetVersion.exe
 
-url=https://dist.nuget.org/win-x86-commandline/$nugetVersion/nuget.exe
-
-if test ! -f $cachePath; then
-    wget -O $cachePath $url 2>/dev/null || curl -o $cachePath --location $url /dev/null
-fi
-
-if test ! -e .nuget; then
-    mkdir .nuget
-    cp $cachePath .nuget/nuget.exe
-fi
-
-if test ! -d packages/Sake; then
-    mono .nuget/nuget.exe install KoreBuild -ExcludeVersion -o packages -nocache -pre
-    mono .nuget/nuget.exe install Sake -ExcludeVersion -Source https://www.nuget.org/api/v2/ -Out packages
-fi
-
-if ! type dnvm > /dev/null 2>&1; then
-    source packages/KoreBuild/build/dnvm.sh
-fi
-
-if ! type dnx > /dev/null 2>&1 || [ -z "$SKIP_DNX_INSTALL" ]; then
-    dnvm install latest -runtime coreclr -alias default
-    dnvm install default -runtime mono -alias default
-else
-    dnvm use default -runtime mono
-fi
-
-mono packages/Sake/tools/Sake.exe -I packages/KoreBuild/build -f makefile.shade "$@"
+$buildFile -r $repoFolder "$@"
\ No newline at end of file