diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 00000000..55a1eb50
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,62 @@
+name: Build
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+    - uses: actions/checkout@v3
+
+    - uses: actions/checkout@v3
+      with:
+        repository: 'itsmattkc/msvc420'
+        path: msvc420
+
+    - name: Restore cached DX5 SDK
+      id: cache-dx5
+      uses: actions/cache/restore@v3
+      with:
+        path: dx5sdk
+        key: dx5sdk
+
+    - name: Download DX5 SDK
+      if: steps.cache-dx5.outputs.cache-hit != 'true'
+      run: |
+        cd dx5sdk
+        C:\msys64\usr\bin\wget.exe https://archive.org/download/idx5sdk/idx5sdk.exe
+        7z x .\idx5sdk.exe
+        7z x .\DX5SDK.EXE
+        cd cdrom
+        
+    - name: Cache DX5 SDK
+      if: steps.cache-dx5.outputs.cache-hit != 'true'
+      id: save-dx5
+      uses: actions/cache/save@v3
+      with:
+        path: dx5sdk
+        key: dx5sdk
+        
+    - name: Setup DX5 SDK
+      run: |
+        cd dx5sdk
+        cd cdrom
+        .\SETUP.EXE /s
+        
+    - name: Build
+      shell: cmd
+      run: |
+        call .\msvc420\bin\VCVARS32.BAT x86
+        mkdir Release
+        .\msvc420\bin\NMAKE.EXE /f isle.mak CFG="ISLE - Win32 Release"
+      
+    - name: Upload Artifact
+      uses: actions/upload-artifact@master
+      with:
+        name: Win32
+        path: Release
diff --git a/ISLE/define.cpp b/ISLE/define.cpp
index f5751c6e..7f574a8c 100644
--- a/ISLE/define.cpp
+++ b/ISLE/define.cpp
@@ -3,8 +3,7 @@
 Isle *g_isle = 0;
 int g_closed = 0;
 
-const char *WNDCLASS_NAME = "Lego Island MainNoM App";
-const char *WINDOW_TITLE = "LEGO®";
+const char *WINDOW_TITLE = "LEGO®";
 
 unsigned char g_mousedown = 0;
 unsigned char g_mousemoved = 0;
diff --git a/ISLE/define.h b/ISLE/define.h
index ffa97a68..b104f239 100644
--- a/ISLE/define.h
+++ b/ISLE/define.h
@@ -5,7 +5,7 @@ class Isle;
 
 extern Isle *g_isle;
 extern int g_closed;
-extern const char *WNDCLASS_NAME;
+#define WNDCLASS_NAME "Lego Island MainNoM App"
 extern const char *WINDOW_TITLE;
 extern unsigned char g_mousedown;
 extern unsigned char g_mousemoved;
diff --git a/ISLE/isle.cpp b/ISLE/isle.cpp
index cc9defe0..61874225 100644
--- a/ISLE/isle.cpp
+++ b/ISLE/isle.cpp
@@ -119,15 +119,17 @@ BOOL readReg(LPCSTR name, LPSTR outValue, DWORD outSize)
   HKEY hKey;
   DWORD valueType;
 
+  BOOL out = FALSE;
+  unsigned long size = outSize;
   if (RegOpenKeyExA(HKEY_LOCAL_MACHINE, "SOFTWARE\\Mindscape\\LEGO Island", 0, KEY_READ, &hKey) == ERROR_SUCCESS) {
-    if (RegQueryValueExA(hKey, name, NULL, &valueType, (LPBYTE) outValue, &outSize) == ERROR_SUCCESS) {
+    if (RegQueryValueExA(hKey, name, NULL, &valueType, (LPBYTE) outValue, &size) == ERROR_SUCCESS) {
       if (RegCloseKey(hKey) == ERROR_SUCCESS) {
-        return TRUE;
+        out = TRUE;
       }
     }
   }
 
-  return FALSE;
+  return out;
 }
 
 int readRegBool(LPCSTR name, BOOL *out)
@@ -234,8 +236,8 @@ void Isle::setupVideoFlags(BOOL fullScreen, BOOL flipSurfaces, BOOL backBuffers,
   m_videoParam.flags().EnableBackBuffers(backBuffers);
   m_videoParam.flags().EnableUnknown1(param_6);
   m_videoParam.flags().SetUnknown3(param_7);
-  m_videoParam.flags().EnableUnknown2();
   m_videoParam.flags().EnableWideViewAngle(wideViewAngle);
+  m_videoParam.flags().EnableUnknown2();
   m_videoParam.SetDeviceName(deviceId);
   if (using8bit) {
     m_videoParam.flags().Set8Bit();
@@ -324,18 +326,18 @@ LRESULT WINAPI WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
   case WM_ENTERMENULOOP:
     return DefWindowProcA(hWnd,WM_ENTERMENULOOP,wParam,lParam);
   case WM_SYSCOMMAND:
-    if (wParam == 0xf140) {
+    if (wParam == SC_SCREENSAVE) {
       return 0;
     }
-    if (wParam == 0xf060 && g_closed == 0) {
+    if (wParam == SC_CLOSE && g_closed == 0) {
       if (g_isle) {
         if (g_rmDisabled) {
           ShowWindow(g_isle->m_windowHandle, SW_RESTORE);
         }
-        PostMessageA(g_isle->m_windowHandle, 0x10, 0, 0);
+        PostMessageA(g_isle->m_windowHandle, WM_CLOSE, 0, 0);
         return 0;
       }
-    } else if (g_isle && g_isle->m_fullScreen && (wParam == 0xf010 || wParam == 0xf100)) {
+    } else if (g_isle && g_isle->m_fullScreen && (wParam == SC_MOVE || wParam == SC_KEYMENU)) {
       return 0;
     }
     return DefWindowProcA(hWnd,WM_SYSCOMMAND,wParam,lParam);
diff --git a/ISLE/main.cpp b/ISLE/main.cpp
index 51c9b723..a0cd95b1 100644
--- a/ISLE/main.cpp
+++ b/ISLE/main.cpp
@@ -19,7 +19,7 @@ BOOL findExistingInstance(void)
 
 BOOL startDirectSound(void)
 {
-  LPDIRECTSOUND lpDS;
+  LPDIRECTSOUND lpDS = 0;
   HRESULT ret = DirectSoundCreate(NULL, &lpDS, NULL);
   if (ret == DS_OK && lpDS != NULL) {
     lpDS->Release();
diff --git a/dx5sdk/cdrom/setup.iss b/dx5sdk/cdrom/setup.iss
new file mode 100644
index 00000000..65d3f56f
--- /dev/null
+++ b/dx5sdk/cdrom/setup.iss
@@ -0,0 +1,34 @@
+[InstallShield Silent]
+Version=v5.00.000
+File=Response File
+[DlgOrder]
+Dlg0=SdWelcome-0
+Count=7
+Dlg1=SdLicense-0
+Dlg2=SdSetupTypeEx-0
+Dlg3=SdAskDestPath-0
+Dlg4=SdSelectFolder-0
+Dlg5=SdStartCopy-0
+Dlg6=SdFinish-0
+[SdWelcome-0]
+Result=1
+[SdLicense-0]
+Result=1
+[SdSetupTypeEx-0]
+Result=Compact
+[SdAskDestPath-0]
+szDir=C:\dxsdk
+Result=1
+[SdSelectFolder-0]
+szFolder=Microsoft DirectX 5 SDK
+Result=1
+[SdStartCopy-0]
+Result=1
+[Application]
+Name=the Microsoft DirectX 5 SDK
+Version=5
+Company=Microsoft
+[SdFinish-0]
+Result=1
+bOpt1=0
+bOpt2=0