diff --git a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
index 4cd10fa2..cc589771 100644
--- a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
+++ b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
@@ -79,6 +79,10 @@ BOOL g_bWidescreen = TRUE;
 int g_iScreenWidth = 1920;
 int g_iScreenHeight = 1080;
 
+// Fullscreen toggle state
+static bool g_isFullscreen = false;
+static WINDOWPLACEMENT g_wpPrev = { sizeof(g_wpPrev) };
+
 void DefineActions(void)
 {
 	// The app needs to define the actions required, and the possible mappings for these
@@ -641,6 +645,36 @@ void Render()
 	g_pSwapChain->Present( 0, 0 );
 }
 
+//--------------------------------------------------------------------------------------
+// Toggle borderless fullscreen
+//--------------------------------------------------------------------------------------
+void ToggleFullscreen()
+{
+	DWORD dwStyle = GetWindowLong(g_hWnd, GWL_STYLE);
+	if (!g_isFullscreen)
+	{
+		MONITORINFO mi = { sizeof(mi) };
+		if (GetWindowPlacement(g_hWnd, &g_wpPrev) &&
+			GetMonitorInfo(MonitorFromWindow(g_hWnd, MONITOR_DEFAULTTOPRIMARY), &mi))
+		{
+			SetWindowLong(g_hWnd, GWL_STYLE, dwStyle & ~WS_OVERLAPPEDWINDOW);
+			SetWindowPos(g_hWnd, HWND_TOP,
+				mi.rcMonitor.left, mi.rcMonitor.top,
+				mi.rcMonitor.right - mi.rcMonitor.left,
+				mi.rcMonitor.bottom - mi.rcMonitor.top,
+				SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
+		}
+	}
+	else
+	{
+		SetWindowLong(g_hWnd, GWL_STYLE, dwStyle | WS_OVERLAPPEDWINDOW);
+		SetWindowPlacement(g_hWnd, &g_wpPrev);
+		SetWindowPos(g_hWnd, NULL, 0, 0, 0, 0,
+			SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_NOOWNERZORDER | SWP_FRAMECHANGED);
+	}
+	g_isFullscreen = !g_isFullscreen;
+}
+
 //--------------------------------------------------------------------------------------
 // Clean up the objects we've created
 //--------------------------------------------------------------------------------------
@@ -1149,8 +1183,14 @@ int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
 				KMInput.SetCapture(true);
 			}
 		}
+
+		// F11 toggles fullscreen
+		if (KMInput.IsKeyPressed(VK_F11))
+		{
+			ToggleFullscreen();
+		}
+
 #if 0
-		PIXBeginNamedEvent(0,"Profile load check");
 		// has the game defined profile data been changed (by a profile load)
 		if(app.uiGameDefinedDataChangedBitmask!=0)
 		{
diff --git a/README.md b/README.md
index c9e77d11..05b119f8 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@ This project contains the source code of Minecraft Legacy Console Edition v1.3.0
 
 - Fixed compilation and execution in both Debug and Release mode on Windows using Visual Studio 2022
 - Added support for keyboard and mouse input
+- Added fullscreen mode support (toggle using F11)
+- Disabled V-Sync for better performance
 
 ## Build & Run