diff --git a/Common/UI/Context.cpp b/Common/UI/Context.cpp
index c6bc911e23..194b3dc2ea 100644
--- a/Common/UI/Context.cpp
+++ b/Common/UI/Context.cpp
@@ -36,6 +36,7 @@ void UIContext::Init(Draw::DrawContext *thin3d, Draw::Pipeline *uipipe, Draw::Pi
 }
 
 void UIContext::setUIAtlas(const std::string &name) {
+	_dbg_assert_(!name.empty());
 	UIAtlas_ = name;
 }
 
diff --git a/UI/Theme.cpp b/UI/Theme.cpp
index 91e1ea780d..1dced507e3 100644
--- a/UI/Theme.cpp
+++ b/UI/Theme.cpp
@@ -73,6 +73,7 @@ static void LoadThemeInfo(const std::vector<Path> &directories) {
 	themeInfos.clear();
 	ThemeInfo def{};
 	def.name = "Default";
+	def.UIAtlas = "ui_atlas";
 	themeInfos.push_back(def);
 
 	// This will update the theme if already present, as such default in assets/theme will get priority if exist
@@ -228,14 +229,14 @@ void UpdateTheme(UIContext *ctx) {
 	ui_theme.backgroundColor = themeInfos[i].uBackgroundColor;
 
 	// Load any missing atlas metadata (the images are loaded from UIContext).
-	LoadAtlasMetadata(ui_atlas, (themeInfos[i].UIAtlas+".meta").c_str(), true);
+	LoadAtlasMetadata(ui_atlas, (themeInfos[i].UIAtlas + ".meta").c_str(), true);
 #if !(PPSSPP_PLATFORM(WINDOWS) || PPSSPP_PLATFORM(ANDROID))
 	LoadAtlasMetadata(font_atlas, "font_atlas.meta", ui_atlas.num_fonts == 0);
 #else
 	LoadAtlasMetadata(font_atlas, "asciifont_atlas.meta", ui_atlas.num_fonts == 0);
 #endif
 
-	ctx->setUIAtlas(themeInfos[i].UIAtlas+".zim");
+	ctx->setUIAtlas(themeInfos[i].UIAtlas + ".zim");
 }
 
 UI::Theme *GetTheme() {
@@ -263,4 +264,4 @@ std::vector<std::string> GetThemeInfoNames() {
 		names.push_back(i.name);
 
 	return names;
-}
\ No newline at end of file
+}
diff --git a/UWP/UWP.vcxproj b/UWP/UWP.vcxproj
index ec1fbc6934..6ddbadb3b0 100644
--- a/UWP/UWP.vcxproj
+++ b/UWP/UWP.vcxproj
@@ -599,6 +599,20 @@
     <None Include="..\assets\ppge_atlas.meta">
       <DeploymentContent>true</DeploymentContent>
     </None>
+    <None Include="..\assets\themes\defaultthemes.ini">
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='UWP Gold|Win32'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='UWP Gold|ARM64'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Debug|ARM64'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Release|ARM64'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='UWP Gold|ARM'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Debug|ARM'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Release|ARM'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='UWP Gold|x64'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">true</DeploymentContent>
+      <DeploymentContent Condition="'$(Configuration)|$(Platform)'=='Release|x64'">true</DeploymentContent>
+    </None>
     <None Include="..\assets\ui_atlas.meta">
       <DeploymentContent>true</DeploymentContent>
     </None>
@@ -1758,4 +1772,4 @@
     <Import Project="$(VSINSTALLDIR)\Common7\IDE\Extensions\Microsoft\VsGraphics\MeshContentTask.targets" />
     <Import Project="$(VSINSTALLDIR)\Common7\IDE\Extensions\Microsoft\VsGraphics\ShaderGraphContentTask.targets" />
   </ImportGroup>
-</Project>
+</Project>
\ No newline at end of file
diff --git a/UWP/UWP.vcxproj.filters b/UWP/UWP.vcxproj.filters
index c45f4a05c3..4fcd4bd2ee 100644
--- a/UWP/UWP.vcxproj.filters
+++ b/UWP/UWP.vcxproj.filters
@@ -50,6 +50,9 @@
     <Filter Include="Content\flash0\font">
       <UniqueIdentifier>{d2294c79-82bd-470f-b984-f838f0fbcd25}</UniqueIdentifier>
     </Filter>
+    <Filter Include="Content\themes">
+      <UniqueIdentifier>{da2113a6-e616-4fc9-8be3-ff75b963664b}</UniqueIdentifier>
+    </Filter>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="App.cpp" />
@@ -359,6 +362,9 @@
     <None Include="..\assets\ui_atlas.meta">
       <Filter>Content</Filter>
     </None>
+    <None Include="..\assets\themes\defaultthemes.ini">
+      <Filter>Content\themes</Filter>
+    </None>
   </ItemGroup>
   <ItemGroup>
     <Text Include="Content\gamecontrollerdb.txt">