diff --git a/core/cfg/option.cpp b/core/cfg/option.cpp
index 095f97f48..474973bc5 100644
--- a/core/cfg/option.cpp
+++ b/core/cfg/option.cpp
@@ -40,6 +40,7 @@ Option<int, false> SavestateSlot("Dreamcast.SavestateSlot");
 Option<bool> ForceFreePlay("ForceFreePlay", true);
 Option<bool, false> FetchBoxart("FetchBoxart", true);
 Option<bool, false> BoxartDisplayMode("BoxartDisplayMode", true);
+Option<int, false> UIScaling("UIScaling", 100);
 
 // Sound
 
diff --git a/core/cfg/option.h b/core/cfg/option.h
index 037fceff7..02ef6cc34 100644
--- a/core/cfg/option.h
+++ b/core/cfg/option.h
@@ -373,6 +373,7 @@ extern Option<int, false> SavestateSlot;
 extern Option<bool> ForceFreePlay;
 extern Option<bool, false> FetchBoxart;
 extern Option<bool, false> BoxartDisplayMode;
+extern Option<int, false> UIScaling;
 
 // Sound
 
diff --git a/core/rend/gui.cpp b/core/rend/gui.cpp
index 3dbd34c7c..9f4753ee1 100644
--- a/core/rend/gui.cpp
+++ b/core/rend/gui.cpp
@@ -77,6 +77,7 @@ static double osd_message_end;
 static std::mutex osd_message_mutex;
 static void (*showOnScreenKeyboard)(bool show);
 static bool keysUpNextFrame[512];
+static bool uiUserScaleUpdated;
 
 static int map_system = 0;
 static void reset_vmus();
@@ -184,6 +185,7 @@ void gui_initFonts()
     if (settings.display.width <= 640 || settings.display.height <= 480)
     	settings.display.uiScale = std::min(1.4f, settings.display.uiScale);
 #endif
+    settings.display.uiScale *= config::UIScaling / 100.f;
 	if (settings.display.uiScale == uiScale && ImGui::GetIO().Fonts->IsBuilt())
 		return;
 	uiScale = settings.display.uiScale;
@@ -1423,6 +1425,11 @@ static void gui_display_settings()
 
     if (ImGui::Button("Done", ScaledVec2(100, 30)))
     {
+    	if (uiUserScaleUpdated)
+    	{
+    		uiUserScaleUpdated = false;
+    		mainui_reinit();
+    	}
     	if (game_started)
     		gui_setState(GuiState::Commands);
     	else
@@ -1544,6 +1551,9 @@ static void gui_display_settings()
 					return true;
                 });
 #endif
+                ImGui::SameLine();
+    			if (ImGui::Button("Rescan Content"))
+    				scanner.refresh();
                 ImGui::PopStyleVar();
                 scrollWhenDraggingOnVoid();
 
@@ -1599,6 +1609,17 @@ static void gui_display_settings()
 					"Display game cover art in the game list.");
 			OptionCheckbox("Fetch Box Art", config::FetchBoxart,
 					"Fetch cover images from TheGamesDB.net.");
+			if (OptionSlider("UI Scaling", config::UIScaling, 50, 200, "Adjust the size of UI elements and fonts.", "%d%%"))
+				uiUserScaleUpdated = true;
+			if (uiUserScaleUpdated)
+			{
+				ImGui::SameLine();
+				if (ImGui::Button("Apply")) {
+					mainui_reinit();
+					uiUserScaleUpdated = false;
+				}
+			}
+
 			if (OptionCheckbox("Hide Legacy Naomi Roms", config::HideLegacyNaomiRoms,
 					"Hide .bin, .dat and .lst files from the content browser"))
 				scanner.refresh();
diff --git a/core/rend/gui_util.cpp b/core/rend/gui_util.cpp
index 2d894642e..14264062c 100644
--- a/core/rend/gui_util.cpp
+++ b/core/rend/gui_util.cpp
@@ -495,7 +495,8 @@ bool OptionCheckbox(const char *name, config::Option<bool, PerGameOption>& optio
 template bool OptionCheckbox(const char *name, config::Option<bool, true>& option, const char *help);
 template bool OptionCheckbox(const char *name, config::Option<bool, false>& option, const char *help);
 
-bool OptionSlider(const char *name, config::Option<int>& option, int min, int max, const char *help, const char *format)
+template<bool PerGameOption>
+bool OptionSlider(const char *name, config::Option<int, PerGameOption>& option, int min, int max, const char *help, const char *format)
 {
 	bool valueChanged;
 	{
@@ -513,6 +514,8 @@ bool OptionSlider(const char *name, config::Option<int>& option, int min, int ma
 	}
 	return valueChanged;
 }
+template bool OptionSlider(const char *name, config::Option<int, true>& option, int min, int max, const char *help, const char *format);
+template bool OptionSlider(const char *name, config::Option<int, false>& option, int min, int max, const char *help, const char *format);
 
 bool OptionArrowButtons(const char *name, config::Option<int>& option, int min, int max, const char *help)
 {
diff --git a/core/rend/gui_util.h b/core/rend/gui_util.h
index a3f9403f7..290efba93 100644
--- a/core/rend/gui_util.h
+++ b/core/rend/gui_util.h
@@ -44,7 +44,8 @@ IMGUI_API const ImWchar*    GetGlyphRangesChineseTraditionalOfficial();// Defaul
 void ShowHelpMarker(const char* desc);
 template<bool PerGameOption>
 bool OptionCheckbox(const char *name, config::Option<bool, PerGameOption>& option, const char *help = nullptr);
-bool OptionSlider(const char *name, config::Option<int>& option, int min, int max, const char *help = nullptr, const char *format = nullptr);
+template<bool PerGameOption>
+bool OptionSlider(const char *name, config::Option<int, PerGameOption>& option, int min, int max, const char *help = nullptr, const char *format = nullptr);
 template<typename T>
 bool OptionRadioButton(const char *name, config::Option<T>& option, T value, const char *help = nullptr);
 void OptionComboBox(const char *name, config::Option<int>& option, const char *values[], int count,