diff --git a/core/src/avm2/globals/flash/desktop/Icon.as b/core/src/avm2/globals/flash/desktop/Icon.as
new file mode 100644
index 000000000000..f893c9cf742d
--- /dev/null
+++ b/core/src/avm2/globals/flash/desktop/Icon.as
@@ -0,0 +1,21 @@
+// The initial version of this file was autogenerated from the official AS3 reference at
+// https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/desktop/Icon.html
+// by https://github.com/golfinq/ActionScript_Event_Builder
+// It won't be regenerated in the future, so feel free to edit and/or fix
+
+package flash.desktop
+{
+  import flash.events.EventDispatcher;
+  [API("661")]
+  public class Icon extends EventDispatcher
+  {
+
+    // The icon image as an array of BitmapData objects of different sizes.
+    public var bitmaps:Array;
+
+    function Icon(bitmaps:Array)
+    {
+      this.bitmaps = bitmaps;
+    }
+  }
+}
diff --git a/core/src/avm2/globals/flash/desktop/InteractiveIcon.as b/core/src/avm2/globals/flash/desktop/InteractiveIcon.as
new file mode 100644
index 000000000000..6761fb83d5f4
--- /dev/null
+++ b/core/src/avm2/globals/flash/desktop/InteractiveIcon.as
@@ -0,0 +1,27 @@
+// The initial version of this file was autogenerated from the official AS3 reference at
+// https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/desktop/InteractiveIcon.html
+// by https://github.com/golfinq/ActionScript_Event_Builder
+// It won't be regenerated in the future, so feel free to edit and/or fix
+
+package flash.desktop
+{
+  [API("661")]
+  public class InteractiveIcon extends Icon
+  {
+    // The current display height of the icon in pixels.
+    private var _height:int;
+
+    // The current display width of the icon in pixels.
+    private var _width:int;
+
+    public function get height():int
+    {
+      return this._height;
+    }
+
+    public function get width():int
+    {
+      return this._width;
+    }
+  }
+}
diff --git a/core/src/avm2/globals/flash/desktop/NativeApplication.as b/core/src/avm2/globals/flash/desktop/NativeApplication.as
new file mode 100644
index 000000000000..556cdc9bf342
--- /dev/null
+++ b/core/src/avm2/globals/flash/desktop/NativeApplication.as
@@ -0,0 +1,259 @@
+package flash.desktop
+{
+  import flash.display.NativeWindow;
+  import flash.events.InvokeEvent;
+  import flash.events.Event;
+  import flash.events.TimerEvent;
+  import flash.events.EventDispatcher;
+  import flash.system.Security;
+  import flash.utils.Timer;
+  import flash.utils.setTimeout;
+  import __ruffle__.stub_method;
+  import __ruffle__.stub_getter;
+  import __ruffle__.stub_setter;
+
+  [API("661")]
+  public final class NativeApplication extends EventDispatcher
+  {
+    private static var _instance:NativeApplication;
+
+    public var _openedWindows:Array = [];
+
+    private var _idleThreshold:int = 300;
+
+    public function NativeApplication()
+    {
+      super();
+      setTimeout(function():void
+      {
+        dispatchEvent(new InvokeEvent(InvokeEvent.INVOKE, false, false, null, []));
+      }, 500);
+    }
+
+    public static function get nativeApplication():NativeApplication
+    {
+      if (!_instance)
+        _instance = new NativeApplication();
+      return _instance;
+    }
+
+    public static function get supportsMenu():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "supportsMenu");
+      return false;
+    }
+
+    public static function get supportsDockIcon():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "supportsDockIcon");
+      return false;
+    }
+
+    public static function get supportsSystemTrayIcon():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "supportsSystemTrayIcon");
+      return false;
+    }
+
+    [API("668")]
+    public static function get supportsDefaultApplication():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "supportsDefaultApplication");
+      return false;
+    }
+
+    [API("668")]
+    public static function get supportsStartAtLogin():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "supportsStartAtLogin");
+      return false;
+    }
+
+    public function exit(exitCode:int = 0):void
+    {
+      stub_method("flash.desktop.NativeApplication", "exit");
+    }
+
+    public function get runtimeVersion():String
+    {
+      stub_method("flash.desktop.NativeApplication", "runtimeVersion");
+      return "5.0.0";
+    }
+
+    public function get runtimePatchLevel():uint
+    {
+      stub_method("flash.desktop.NativeApplication", "runtimePatchLevel");
+      return 0;
+    }
+
+    public function get applicationID():String
+    {
+      stub_method("flash.desktop.NativeApplication", "applicationID");
+      return "";
+    }
+
+    public function get publisherID():String
+    {
+      stub_method("flash.desktop.NativeApplication", "publisherID");
+      return "";
+    }
+
+    public function get applicationDescriptor():XML
+    {
+      stub_method("flash.desktop.NativeApplication", "applicationDescriptor");
+      return null;
+    }
+
+    public function get autoExit():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "autoExit");
+      return false;
+    }
+
+    public function set autoExit(param1:Boolean):void
+    {
+      stub_getter("flash.desktop.NativeApplication", "autoExit");
+    }
+
+    public function get icon():InteractiveIcon
+    {
+      stub_getter("flash.desktop.NativeApplication", "icon");
+      return null;
+    }
+
+    [API("668")]
+    public function get systemIdleMode():String
+    {
+      stub_getter("flash.desktop.NativeApplication", "systemIdleMode");
+      return "normal";
+    }
+
+    [API("668")]
+    public function set systemIdleMode(param1:String):void
+    {
+      stub_setter("flash.desktop.NativeApplication", "systemIdleMode");
+    }
+
+    public function get startAtLogin():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "startAtLogin");
+      return false;
+    }
+
+    public function set startAtLogin(param1:Boolean):void
+    {
+      stub_setter("flash.desktop.NativeApplication", "startAtLogin");
+    }
+
+    public function activate(window:NativeWindow = null):void
+    {
+      stub_method("flash.desktop.NativeApplication", "activate");
+    }
+
+    public function get activeWindow():NativeWindow
+    {
+      stub_getter("flash.desktop.NativeApplication", "activeWindow");
+      return _openedWindows[0];
+    }
+
+    public function get openedWindows():Array
+    {
+      stub_getter("flash.desktop.NativeApplication", "openedWindows");
+      return _openedWindows;
+    }
+
+    public function get timeSinceLastUserInput():int
+    {
+      stub_getter("flash.desktop.NativeApplication", "timeSinceLastUserInput");
+      return 100;
+    }
+
+    public function get idleThreshold():int
+    {
+      return this._idleThreshold;
+    }
+
+    public function set idleThreshold(value:int):void
+    {
+      this._idleThreshold = value;
+    }
+
+    public function copy():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "copy");
+      return false;
+    }
+
+    public function cut():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "cut");
+      return false;
+    }
+
+    public function paste():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "paste");
+      return false;
+    }
+
+    public function clear():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "clear");
+      return false;
+    }
+
+    public function selectAll():Boolean
+    {
+      stub_method("flash.desktop.NativeApplication", "selectAll");
+      return false;
+    }
+
+    public function getDefaultApplication(extension:String):String
+    {
+      stub_method("flash.desktop.NativeApplication", "getDefaultApplication");
+      return null;
+    }
+
+    public function isSetAsDefaultApplication(extension:String):Boolean
+    {
+      stub_method("flash.desktop.NativeApplication", "isSetAsDefaultApplication");
+      return true;
+    }
+
+    public function setAsDefaultApplication(extension:String):void
+    {
+      stub_method("flash.desktop.NativeApplication", "setAsDefaultApplication");
+    }
+
+    public function removeAsDefaultApplication(extension:String):void
+    {
+      stub_method("flash.desktop.NativeApplication", "removeAsDefaultApplication");
+    }
+
+    [API("681")]
+    public function get executeInBackground():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "executeInBackground");
+      return false;
+    }
+
+    [API("681")]
+    public function set executeInBackground(param1:Boolean):void
+    {
+      stub_setter("flash.desktop.NativeApplication", "executeInBackground");
+    }
+
+    // [API("721")] Ruffle doesn't support this API Version
+    public function get isCompiledAOT():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "isCompiledAOT");
+      return false;
+    }
+
+    public function get isActive():Boolean
+    {
+      stub_getter("flash.desktop.NativeApplication", "isActive");
+      return true;
+    }
+  }
+}
diff --git a/core/src/avm2/globals/flash/display/NativeMenu.as b/core/src/avm2/globals/flash/display/NativeMenu.as
index d002f30ff87d..df5d94974f76 100644
--- a/core/src/avm2/globals/flash/display/NativeMenu.as
+++ b/core/src/avm2/globals/flash/display/NativeMenu.as
@@ -1,6 +1,141 @@
-package flash.display {
+package flash.display
+{
+
     import flash.events.EventDispatcher;
-    public class NativeMenu extends EventDispatcher {
+    import __ruffle__.stub_method;
+    import __ruffle__.stub_getter;
+    
+    [API("661")]
+    public class NativeMenu extends EventDispatcher
+    {
+
+        // Indicates whether any form of native menu is supported on the client system.
+        private var _isSupported:Boolean;
+
+        // The array of NativeMenuItem objects in this menu.
+        public var items:Array;
+
+        // The number of NativeMenuItem objects in this menu.
+        private var _numItems:int;
+
+        // The parent menu.
+        private var _parent:NativeMenu;
+
+        public function NativeMenu()
+        {
+
+        }
+
+        // Adds a menu item at the bottom of the menu.
+        public function addItem(item:NativeMenuItem):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "addItem");
+            return null;
+        }
+
+        // Inserts a menu item at the specified position.
+        public function addItemAt(item:NativeMenuItem, index:int):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "addItemAt");
+            return null;
+        }
+
+        // Adds a submenu to the menu by inserting a new menu item.
+        public function addSubmenu(submenu:NativeMenu, label:String):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "addSubmenu");
+            return null;
+        }
+
+        // Adds a submenu to the menu by inserting a new menu item at the specified position.
+        public function addSubmenuAt(submenu:NativeMenu, index:int, label:String):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "addSubmenuAt");
+            return null;
+        }
+
+        // Creates a copy of the menu and all items.
+        public function clone():NativeMenu
+        {
+            stub_method("flash.display.NativeMenu", "clone");
+            return null;
+        }
+
+        // Reports whether this menu contains the specified menu item.
+        public function containsItem(item:NativeMenuItem):Boolean
+        {
+            stub_method("flash.display.NativeMenu", "containsItem");
+            return false;
+        }
+
+        // Pops up this menu at the specified location.
+        public function display(stage:Stage, stageX:Number, stageY:Number):void
+        {
+            stub_method("flash.display.NativeMenu", "display");
+        }
+
+        // Gets the menu item at the specified index.
+        public function getItemAt(index:int):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "getItemAt");
+            return null;
+        }
+
+        // Gets the menu item with the specified name.
+        public function getItemByName(name:String):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "getItemByName");
+            return null;
+        }
+
+        // Gets the position of the specified item.
+        public function getItemIndex(item:NativeMenuItem):int
+        {
+            stub_method("flash.display.NativeMenu", "getItemIndex");
+            return -1;
+        }
+
+        // Removes all items from the menu.
+        public function removeAllItems():void
+        {
+            stub_method("flash.display.NativeMenu", "removeAllItems");
+        }
+
+        // Removes the specified menu item.
+        public function removeItem(item:NativeMenuItem):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "removeItem");
+            return null;
+        }
+
+        // Removes and returns the menu item at the specified index.
+        public function removeItemAt(index:int):NativeMenuItem
+        {
+            stub_method("flash.display.NativeMenu", "removeItemAt");
+            return null;
+        }
+
+        // Moves a menu item to the specified position.
+        public function setItemIndex(item:NativeMenuItem, index:int):void
+        {
+            stub_method("flash.display.NativeMenu", "setItemIndex");
+        }
+
+        [API("668")]
+        public function get isSupported():Boolean
+        {
+            return this._isSupported;
+        }
+
+        public function get numItems():int
+        {
+            return this._numItems;
+        }
+
+        public function get parent():NativeMenu
+        {
+            return this._parent;
+        }
 
     }
 }
diff --git a/core/src/avm2/globals/flash/display/NativeMenuItem.as b/core/src/avm2/globals/flash/display/NativeMenuItem.as
index 1cdd9491f35f..c3665015a2bb 100644
--- a/core/src/avm2/globals/flash/display/NativeMenuItem.as
+++ b/core/src/avm2/globals/flash/display/NativeMenuItem.as
@@ -1,5 +1,7 @@
 package flash.display {
     import flash.events.EventDispatcher;
+
+    [API("661")]
     public class NativeMenuItem extends EventDispatcher {
         public var enabled: Boolean;
     }
diff --git a/core/src/avm2/globals/flash/display/NativeWindow.as b/core/src/avm2/globals/flash/display/NativeWindow.as
new file mode 100644
index 000000000000..28dfaf5129a7
--- /dev/null
+++ b/core/src/avm2/globals/flash/display/NativeWindow.as
@@ -0,0 +1,317 @@
+package flash.display
+{
+  import flash.geom.Point;
+  import flash.geom.Rectangle;
+  import flash.events.NativeWindowBoundsEvent;
+  import flash.events.Event;
+  import flash.events.EventDispatcher;
+  import flash.desktop.NativeApplication;
+  import __ruffle__.stub_method;
+  import __ruffle__.stub_getter;
+  import __ruffle__.stub_setter;
+  import __ruffle__.stub_constructor;
+  
+  [API("661")]
+  public class NativeWindow extends EventDispatcher
+  {
+    public const systemMaxSize:Point = new Point(2880, 2880);
+    public const systemMinSize:Point = new Point(1, 1);
+    public var minSize:Point = systemMinSize;
+    public var maxSize:Point = systemMaxSize;
+    public var title:String;
+    public var alwaysInFront:Boolean = true;
+    public var visible:Boolean = true;
+
+    private var _bounds:Rectangle;
+    private var _maximizable:Boolean;
+    private var _minimizable:Boolean;
+    private var _resizable:Boolean;
+    private var _systemChrome:String;
+    private var _transparent:Boolean;
+    private var _type:String;
+    private var _closed:Boolean = false;
+    private var _stage:Stage;
+
+    public function NativeWindow(initOptions:NativeWindowInitOptions, _stage:Stage = null)
+    {
+      stub_constructor("flash.display.NativeWindow");
+      NativeApplication.nativeApplication._openedWindows.push(this);
+      if (_stage)
+      {
+        this._stage = _stage;
+        _stage.addEventListener(Event.RESIZE, function(e:Event):void
+        {
+          dispatchEvent(new NativeWindowBoundsEvent(NativeWindowBoundsEvent.RESIZE, false, false, _bounds, _bounds = new Rectangle(x, y, width, height)));
+        });
+      }
+      else
+      {
+        stub_constructor("flash.display.NativeWindow without stage");
+      }
+
+      _maximizable = initOptions.maximizable;
+      _minimizable = initOptions.minimizable;
+      _resizable = initOptions.resizable;
+      _systemChrome = initOptions.systemChrome;
+      _transparent = initOptions.transparent;
+      _type = initOptions.type;
+    }
+
+    public function get width():Number
+    {
+      stub_getter("flash.display.NativeWindow", "width");
+      return _stage.stageWidth;
+    }
+
+    public function set width(value:Number):void
+    {
+      stub_setter("flash.display.NativeWindow", "width");
+      _stage.stageWidth = value;
+    }
+
+    public function get height():Number
+    {
+      stub_getter("flash.display.NativeWindow", "height");
+      return _stage.stageHeight;
+    }
+
+    public function set height(value:Number):void
+    {
+      stub_setter("flash.display.NativeWindow", "height");
+      _stage.stageHeight = value;
+    }
+
+    public function get x():Number
+    {
+      stub_getter("flash.display.NativeWindow", "x");
+      return _stage.x;
+    }
+
+    public function set x(value:Number):void
+    {
+      stub_setter("flash.display.NativeWindow", "x");
+    }
+
+    public function get y():Number
+    {
+      stub_getter("flash.display.NativeWindow", "y");
+      return _stage.y;
+    }
+
+    public function set y(value:Number):void
+    {
+      stub_setter("flash.display.NativeWindow", "y");
+    }
+
+    public function get bounds():Rectangle
+    {
+      stub_getter("flash.display.NativeWindow", "bounds");
+      return _bounds;
+    }
+
+    public function set bounds(value:Rectangle):void
+    {
+      stub_setter("flash.display.NativeWindow", "bounds");
+      _bounds.height = height = value.height;
+      _bounds.width = width = value.width;
+    }
+
+    public function get maximizable():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "maximizable");
+      return _maximizable;
+    }
+
+    public function get minimizable():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "minimizable");
+      return _minimizable;
+    }
+
+    public function get resizable():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "resizable");
+      return _resizable;
+    }
+
+    public function get systemChrome():String
+    {
+      stub_getter("flash.display.NativeWindow", "systemChrome");
+      return _systemChrome;
+    }
+
+    public function get transparent():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "transparent");
+      return _transparent;
+    }
+
+    public function get type():String
+    {
+      stub_getter("flash.display.NativeWindow", "type");
+      return _type;
+    }
+
+    public function get stage():Stage
+    {
+      return _stage;
+    }
+
+    // Activates this window.
+    public function activate():void
+    {
+      stub_method("flash.display.NativeWindow", "activate");
+      dispatchEvent(new Event(Event.ACTIVATE));
+    }
+
+    // Closes this window.
+    public function close():void
+    {
+      stub_method("flash.display.NativeWindow", "close");
+      if (!dispatchEvent(new Event(Event.CLOSING, false, true)))
+      {
+        _closed = true;
+        dispatchEvent(new Event(Event.CLOSE));
+        dispatchEvent(new Event(Event.DEACTIVATE));
+      }
+
+    }
+
+    // Converts a point in pixel coordinates relative to the origin of the window stage (a global point in terms of the display list), to a point on the virtual desktop.
+    public function globalToScreen(globalPoint:Point):Point
+    {
+      stub_method("flash.display.NativeWindow", "globalToScreen");
+      return null;
+    }
+
+    // Returns a list of the NativeWindow objects that are owned by this window.
+    [API("671")]
+    public function listOwnedWindows():Vector.<NativeWindow>
+    {
+      stub_method("flash.display.NativeWindow", "listOwnedWindows");
+      return new Vector.<NativeWindow>();
+    }
+
+    // Maximizes this window.
+    public function maximize():void
+    {
+      stub_method("flash.display.NativeWindow", "maximize");
+    }
+
+    // Minimizes this window.
+    public function minimize():void
+    {
+      stub_method("flash.display.NativeWindow", "minimize");
+    }
+
+    // Triggers a visual cue through the operating system that an event of interest has occurred.
+    public function notifyUser(type:String):void
+    {
+      stub_method("flash.display.NativeWindow", "notifyUser");
+    }
+
+    // Sends this window directly behind the specified window.
+    public function orderInBackOf(window:NativeWindow):Boolean
+    {
+      stub_method("flash.display.NativeWindow", "orderInBackOf");
+      return false;
+    }
+
+    // Brings this window directly in front of the specified window.
+    public function orderInFrontOf(window:NativeWindow):Boolean
+    {
+      stub_method("flash.display.NativeWindow", "orderInFrontOf");
+      return false;
+    }
+
+    // Sends this window behind any other visible windows.
+    public function orderToBack():Boolean
+    {
+      stub_method("flash.display.NativeWindow", "orderToBack");
+      return false;
+    }
+
+    // Brings this window in front of any other visible windows.
+    public function orderToFront():Boolean
+    {
+      stub_method("flash.display.NativeWindow", "orderToFront");
+      return false;
+    }
+
+    // Restores this window from either a minimized or a maximized state.
+    public function restore():void
+    {
+      stub_method("flash.display.NativeWindow", "restore");
+    }
+
+    // Starts a system-controlled move of this window.
+    public function startMove():Boolean
+    {
+      stub_method("flash.display.NativeWindow", "startMove");
+      return false;
+    }
+
+    // Starts a system-controlled resize operation of this window.
+    public function startResize(edgeOrCorner:String = "BR"):Boolean
+    {
+      stub_method("flash.display.NativeWindow", "startResize");
+      return false;
+    }
+
+    public function get active():Boolean
+    {
+      return true;
+    }
+
+    public function get closed():Boolean
+    {
+      return this._closed;
+    }
+
+    public function get displayState():String
+    {
+      stub_getter("flash.display.NativeWindow", "displayState");
+      return "normal";
+    }
+
+    [API("668")]
+    public function get isSupported():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "isSupported");
+      return false;
+    }
+
+    [API("671")]
+    public function get owner():NativeWindow
+    {
+      stub_getter("flash.display.NativeWindow", "owner");
+      return this;
+    }
+
+    [API("675")]
+    public function get renderMode():String
+    {
+      stub_getter("flash.display.NativeWindow", "renderMode");
+      return "auto";
+    }
+    
+    public function get supportsMenu():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "supportsMenu");
+      return false;
+    }
+
+    public function get supportsNotification():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "supportsNotification");
+      return false;
+    }
+
+    [API("661")]
+    public function get supportsTransparency():Boolean
+    {
+      stub_getter("flash.display.NativeWindow", "supportsTransparency");
+      return false;
+    }
+  }
+}
diff --git a/core/src/avm2/globals/flash/display/NativeWindowDisplayState.as b/core/src/avm2/globals/flash/display/NativeWindowDisplayState.as
new file mode 100644
index 000000000000..b405843c769b
--- /dev/null
+++ b/core/src/avm2/globals/flash/display/NativeWindowDisplayState.as
@@ -0,0 +1,10 @@
+package flash.display
+{
+  [API("661")]
+  public final class NativeWindowDisplayState
+  {
+    public static const MAXIMIZED:String = "maximized";
+    public static const MINIMIZED:String = "minimized";
+    public static const NORMAL:String = "normal";
+  }
+}
diff --git a/core/src/avm2/globals/flash/display/NativeWindowInitOptions.as b/core/src/avm2/globals/flash/display/NativeWindowInitOptions.as
new file mode 100644
index 000000000000..af546213eda7
--- /dev/null
+++ b/core/src/avm2/globals/flash/display/NativeWindowInitOptions.as
@@ -0,0 +1,50 @@
+// The initial version of this file was autogenerated from the official AS3 reference at
+// https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/display/NativeWindowInitOptions.html
+// by https://github.com/golfinq/ActionScript_Event_Builder
+// It won't be regenerated in the future, so feel free to edit and/or fix
+
+package flash.display
+{
+  [API("661")]
+  public class NativeWindowInitOptions
+  {
+
+    // Specifies whether the window can be maximized by the user.
+    public var maximizable:Boolean;
+
+    // Specifies whether the window can be minimized by the user.
+    public var minimizable:Boolean;
+
+    // Specifies the NativeWindow object that should own any windows created with this NativeWindowInitOptions.
+    [API("671")]
+    public var owner:NativeWindow;
+
+    // Specifies the render mode of the NativeWindow object created with this NativeWindowInitOptions.
+    [API("675")]
+    public var renderMode:String;
+
+    // Specifies whether the window can be resized by the user.
+    public var resizable:Boolean;
+
+    // Specifies whether system chrome is provided for the window.
+    public var systemChrome:String;
+
+    // Specifies whether the window supports transparency and alpha blending against the desktop.
+    public var transparent:Boolean;
+
+    // Specifies the type of the window to be created.
+    public var type:String;
+
+    public function NativeWindowInitOptions()
+    {
+      systemChrome = NativeWindowSystemChrome.STANDARD;
+      type = NativeWindowType.NORMAL;
+      transparent = false;
+      owner = null;
+      resizable = true;
+      maximizable = true;
+      minimizable = true;
+    }
+
+  }
+}
diff --git a/core/src/avm2/globals/flash/display/NativeWindowSystemChrome.as b/core/src/avm2/globals/flash/display/NativeWindowSystemChrome.as
new file mode 100644
index 000000000000..bb0f17322ccf
--- /dev/null
+++ b/core/src/avm2/globals/flash/display/NativeWindowSystemChrome.as
@@ -0,0 +1,10 @@
+package flash.display
+{
+  [API("661")]
+  public final class NativeWindowSystemChrome
+  {
+    public static const ALTERNATE:String = "alternate";
+    public static const NONE:String = "none";
+    public static const STANDARD:String = "standard";
+  }
+}
diff --git a/core/src/avm2/globals/flash/display/NativeWindowType.as b/core/src/avm2/globals/flash/display/NativeWindowType.as
new file mode 100644
index 000000000000..d2345581bb05
--- /dev/null
+++ b/core/src/avm2/globals/flash/display/NativeWindowType.as
@@ -0,0 +1,10 @@
+package flash.display
+{
+    [API("661")]
+    public final class NativeWindowType
+    {
+        public static const LIGHTWEIGHT:String = "lightweight";
+        public static const NORMAL:String = "normal";
+        public static const UTILITY:String = "utility";
+    }
+}
\ No newline at end of file
diff --git a/core/src/avm2/globals/flash/display/Stage.as b/core/src/avm2/globals/flash/display/Stage.as
index f4f8ea6302b9..d3b627e9068b 100644
--- a/core/src/avm2/globals/flash/display/Stage.as
+++ b/core/src/avm2/globals/flash/display/Stage.as
@@ -14,6 +14,8 @@ package flash.display {
     public class Stage extends DisplayObjectContainer {
         private var _colorCorrection:String = ColorCorrection.DEFAULT;
         private var _mouseLock:Boolean = false;
+        private var _nativeWindow:NativeWindow;
+        private var _fullScreenSourceRect:Rectangle;
 
         public function Stage() {
             throw new Error("You cannot construct new instances of the Stage.")
@@ -210,8 +212,15 @@ package flash.display {
 
         public native function get fullScreenHeight():uint;
 
-        public native function get fullScreenSourceRect():Rectangle;
-        public native function set fullScreenSourceRect(value:Rectangle):void;
+        public function get fullScreenSourceRect():Rectangle {
+            stub_getter("flash.display.Stage", "fullScreenSourceRect");
+            return this._fullScreenSourceRect;
+        }
+
+        public function set fullScreenSourceRect(rect: Rectangle):void {
+            stub_setter("flash.display.Stage", "fullScreenSourceRect");
+            this._fullScreenSourceRect = rect;
+        }
 
         public native function get fullScreenWidth():uint;
 
@@ -317,5 +326,13 @@ package flash.display {
         public function setAspectRatio(newAspectRatio:String):void {
             stub_method("flash.display.Stage", "setAspectRatio");
         }
+        
+        [API("661")]
+        public function get nativeWindow():NativeWindow {
+            if (!this._nativeWindow) {
+                this._nativeWindow = new NativeWindow(new NativeWindowInitOptions(), this);
+            }
+            return this._nativeWindow;
+        }
     }
 }
diff --git a/core/src/avm2/globals/flash/display/stage.rs b/core/src/avm2/globals/flash/display/stage.rs
index 20f1cc428d3e..dc9a1a334819 100644
--- a/core/src/avm2/globals/flash/display/stage.rs
+++ b/core/src/avm2/globals/flash/display/stage.rs
@@ -7,11 +7,11 @@ use crate::avm2::parameters::ParametersExt;
 use crate::avm2::value::Value;
 use crate::avm2::vector::VectorStorage;
 use crate::avm2::Error;
+use crate::avm2_stub_getter;
 use crate::display_object::{
     StageDisplayState, TDisplayObject, TDisplayObjectContainer, TInteractiveObject,
 };
 use crate::string::{AvmString, WString};
-use crate::{avm2_stub_getter, avm2_stub_setter};
 use swf::Color;
 
 /// Implements `flash.display.Stage`'s native instance constructor.
@@ -443,26 +443,6 @@ pub fn invalidate<'gc>(
     Ok(Value::Undefined)
 }
 
-/// Stage.fullScreenSourceRect's getter
-pub fn get_full_screen_source_rect<'gc>(
-    activation: &mut Activation<'_, 'gc>,
-    _this: Object<'gc>,
-    _args: &[Value<'gc>],
-) -> Result<Value<'gc>, Error<'gc>> {
-    avm2_stub_getter!(activation, "flash.display.Stage", "fullScreenSourceRect");
-    Ok(Value::Undefined)
-}
-
-/// Stage.fullScreenSourceRect's setter
-pub fn set_full_screen_source_rect<'gc>(
-    activation: &mut Activation<'_, 'gc>,
-    _this: Object<'gc>,
-    _args: &[Value<'gc>],
-) -> Result<Value<'gc>, Error<'gc>> {
-    avm2_stub_setter!(activation, "flash.display.Stage", "fullScreenSourceRect");
-    Ok(Value::Undefined)
-}
-
 /// Stage.fullScreenHeight's getter
 pub fn get_full_screen_height<'gc>(
     activation: &mut Activation<'_, 'gc>,
diff --git a/core/src/avm2/globals/flash/events/Event.as b/core/src/avm2/globals/flash/events/Event.as
index f5a814dc5bba..8625c7a2231d 100644
--- a/core/src/avm2/globals/flash/events/Event.as
+++ b/core/src/avm2/globals/flash/events/Event.as
@@ -17,6 +17,9 @@ package flash.events {
 
 		public static const CLOSE:String = "close";
 
+		[API("661")]
+		public static const CLOSING:String = "closing";
+
 		public static const COMPLETE:String = "complete";
 
 		public static const CONNECT:String = "connect";
@@ -31,6 +34,9 @@ package flash.events {
 
 		public static const FRAME_CONSTRUCTED:String = "frameConstructed";
 
+		[API("661")]
+		public static const EXITING:String = "exiting";
+
 		public static const EXIT_FRAME:String = "exitFrame";
 
 		public static const FRAME_LABEL:String = "frameLabel";
diff --git a/core/src/avm2/globals/flash/events/InvokeEvent.as b/core/src/avm2/globals/flash/events/InvokeEvent.as
new file mode 100644
index 000000000000..b82a616b70b7
--- /dev/null
+++ b/core/src/avm2/globals/flash/events/InvokeEvent.as
@@ -0,0 +1,55 @@
+// The initial version of this file was autogenerated from the official AS3 reference at
+// https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/events/InvokeEvent.html
+// by https://github.com/golfinq/ActionScript_Event_Builder
+// It won't be regenerated in the future, so feel free to edit and/or fix
+
+package flash.events
+{
+
+  import flash.filesystem.File;
+
+  [API("661")]
+  public class InvokeEvent extends Event
+  {
+    public static const INVOKE:String = "invoke";
+
+    // The array of string arguments passed during this invocation.
+    private var _arguments:Array;
+
+    // The reason for this InvokeEvent.
+    private var _reason:String;
+
+    // The directory that should be used to resolve any relative paths in the arguments array.
+    private var _currentDirectory:File;
+
+    public function InvokeEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, dir:File = null, argv:Array = null, reason:String = "standard")
+    {
+      super(type, bubbles, cancelable);
+      this._currentDirectory = dir;
+      this._arguments = argv;
+      this._reason = reason;
+    }
+
+    // [override] Creates a new copy of this event.
+    override public function clone():Event
+    {
+      return new InvokeEvent(this.type, this.bubbles, this.cancelable, this.arguments, this.reason);
+    }
+
+    public function get arguments():Array
+    {
+      return this._arguments;
+    }
+
+    [API("664")]
+    public function get reason():String
+    {
+      return this._reason;
+    }
+
+    public function get currentDirectory():File
+    {
+      return this._currentDirectory;
+    }
+  }
+}
diff --git a/core/src/avm2/globals/flash/events/NativeWindowBoundsEvent.as b/core/src/avm2/globals/flash/events/NativeWindowBoundsEvent.as
new file mode 100644
index 000000000000..746e077b1615
--- /dev/null
+++ b/core/src/avm2/globals/flash/events/NativeWindowBoundsEvent.as
@@ -0,0 +1,52 @@
+// The initial version of this file was autogenerated from the official AS3 reference at
+// https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/events/NativeWindowBoundsEvent.html
+// by https://github.com/golfinq/ActionScript_Event_Builder
+// It won't be regenerated in the future, so feel free to edit and/or fix
+
+package flash.events
+{
+
+  import flash.geom.Rectangle;
+
+  [API("661")]
+  public class NativeWindowBoundsEvent extends Event
+  {
+    public static const RESIZE:String = "resize";
+
+    // The bounds of the window before the change.
+    private var _beforeBounds:Rectangle;
+
+    // The bounds of the window after the change.
+    private var _afterBounds:Rectangle;
+
+    public function NativeWindowBoundsEvent(type:String, bubbles:Boolean = false, cancelable:Boolean = false, beforeBounds:Rectangle = null, afterBounds:Rectangle = null)
+    {
+      super(type, bubbles, cancelable);
+      this._beforeBounds = beforeBounds;
+      this._afterBounds = afterBounds;
+    }
+
+    // [override] Creates a copy of the NativeWindowBoundsEvent object and sets the value of each property to match that of the original.
+    override public function clone():Event
+    {
+      return new NativeWindowBoundsEvent(this.type, this.bubbles, this.cancelable, this.beforeBounds, this.afterBounds);
+    }
+
+    // [override] Returns a string that contains all the properties of the NativeWindowBoundsEvent object.
+    override public function toString():String
+    {
+      return this.formatToString("NativeWindowBoundsEvent", "type", "bubbles", "cancelable");
+    }
+
+    public function get beforeBounds():Rectangle
+    {
+      return this._beforeBounds;
+    }
+
+    public function get afterBounds():Rectangle
+    {
+      return this._afterBounds;
+    }
+
+  }
+}
diff --git a/core/src/avm2/globals/flash/events/NativeWindowDisplayStateEvent.as b/core/src/avm2/globals/flash/events/NativeWindowDisplayStateEvent.as
new file mode 100644
index 000000000000..b13882db55cc
--- /dev/null
+++ b/core/src/avm2/globals/flash/events/NativeWindowDisplayStateEvent.as
@@ -0,0 +1,49 @@
+// The initial version of this file was autogenerated from the official AS3 reference at
+// https://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/events/NativeWindowDisplayStateEvent.html
+// by https://github.com/golfinq/ActionScript_Event_Builder
+// It won't be regenerated in the future, so feel free to edit and/or fix
+
+package flash.events
+{
+  [API("661")]
+  public class NativeWindowDisplayStateEvent extends Event
+  {
+    public static const DISPLAY_STATE_CHANGE:String = "displayStateChange";
+
+    // The display state of the NativeWindow before the change.
+    private var _beforeDisplayState:String;
+
+    // The display state of the NativeWindow after the change.
+    private var _afterDisplayState:String;
+
+    public function NativeWindowDisplayStateEvent(type:String, bubbles:Boolean = true, cancelable:Boolean = false, beforeDisplayState:String = "", afterDisplayState:String = "")
+    {
+      super(type, bubbles, cancelable);
+      this._beforeDisplayState = beforeDisplayState;
+      this._afterDisplayState = afterDisplayState;
+    }
+
+    // [override] Creates a copy of the NativeWindowDisplayStateEvent object and sets the value of each property to match that of the original.
+    override public function clone():Event
+    {
+      return new NativeWindowDisplayStateEvent(this.type, this.bubbles, this.cancelable, this.beforeDisplayState, this.afterDisplayState);
+    }
+
+    // [override] Returns a string that contains all the properties of the NativeWindowDisplayStateEvent object.
+    override public function toString():String
+    {
+      return this.formatToString("NativeWindowDisplayStateEvent", "type", "bubbles", "cancelable", "beforeDisplayState", "afterDisplayState");
+    }
+
+    public function get beforeDisplayState():String
+    {
+      return this._beforeDisplayState;
+    }
+
+    public function get afterDisplayState():String
+    {
+      return this._afterDisplayState;
+    }
+
+  }
+}
diff --git a/core/src/avm2/globals/globals.as b/core/src/avm2/globals/globals.as
index 281ee0db731b..3933435d8e08 100644
--- a/core/src/avm2/globals/globals.as
+++ b/core/src/avm2/globals/globals.as
@@ -58,6 +58,10 @@ include "flash/desktop/IFilePromise.as"
 include "flash/desktop/NativeProcess.as"
 include "flash/desktop/NativeProcessStartupInfo.as"
 
+include "flash/desktop/Icon.as"
+include "flash/desktop/InteractiveIcon.as"
+include "flash/desktop/NativeApplication.as"
+
 include "flash/display/IBitmapDrawable.as"
 include "flash/display/DisplayObject.as"
 include "flash/display/Bitmap.as"
@@ -101,6 +105,11 @@ include "flash/display/LineScaleMode.as"
 include "flash/display/MorphShape.as"
 include "flash/display/NativeMenu.as"
 include "flash/display/NativeMenuItem.as"
+include "flash/display/NativeWindowDisplayState.as"	
+include "flash/display/NativeWindowSystemChrome.as"
+include "flash/display/NativeWindowType.as"
+include "flash/display/NativeWindowInitOptions.as"
+include "flash/display/NativeWindow.as"
 include "flash/display/PixelSnapping.as"
 include "flash/display/PNGEncoderOptions.as"
 include "flash/display/Scene.as"
@@ -186,7 +195,10 @@ include "flash/events/GameInputEvent.as"
 include "flash/events/GesturePhase.as"
 include "flash/events/HTTPStatusEvent.as"
 include "flash/events/IOErrorEvent.as"
+include "flash/events/InvokeEvent.as"
 include "flash/events/KeyboardEvent.as"
+include "flash/events/NativeWindowBoundsEvent.as"
+include "flash/events/NativeWindowDisplayStateEvent.as"
 include "flash/events/NetDataEvent.as"
 include "flash/events/NetFilterEvent.as"
 include "flash/events/NetStatusEvent.as"
diff --git a/desktop/src/app.rs b/desktop/src/app.rs
index 4d7521fc35a6..2cb5611dc444 100644
--- a/desktop/src/app.rs
+++ b/desktop/src/app.rs
@@ -206,7 +206,7 @@ impl App {
                                 let viewport_scale_factor = self.window.scale_factor();
                                 player.set_viewport_dimensions(ViewportDimensions {
                                     width: size.width,
-                                    height: size.height - height_offset as u32,
+                                    height: size.height.saturating_sub(height_offset as u32),
                                     scale_factor: viewport_scale_factor,
                                 });
                             }