diff --git a/src/haxe/ru/m/Device.hx b/src/haxe/ru/m/Device.hx
index c9a1660..563ab3c 100644
--- a/src/haxe/ru/m/Device.hx
+++ b/src/haxe/ru/m/Device.hx
@@ -1,5 +1,8 @@
 package ru.m;
 
+import flash.display.StageDisplayState;
+import flash.Lib;
+
 enum abstract Platform(String) from String to String {
     var ANDROID = "android";
     var LINUX = "linux";
@@ -48,4 +51,15 @@ class Device {
         return false;
         #end
     }
+
+    public static var fullScreenSupport(get, never):Bool;
+
+    public static function get_fullScreenSupport():Bool {
+        return Lib.current.stage.allowsFullScreenInteractive;
+    }
+
+    public static function toggleFullScreen():Void {
+        Lib.current.stage.displayState = Lib.current.stage.displayState == StageDisplayState.NORMAL ?
+        StageDisplayState.FULL_SCREEN_INTERACTIVE : StageDisplayState.NORMAL;
+    }
 }
diff --git a/src/haxe/ru/m/puzzlez/view/PuzzlezAppView.hx b/src/haxe/ru/m/puzzlez/view/PuzzlezAppView.hx
index be0bbfa..a1d0626 100644
--- a/src/haxe/ru/m/puzzlez/view/PuzzlezAppView.hx
+++ b/src/haxe/ru/m/puzzlez/view/PuzzlezAppView.hx
@@ -26,6 +26,8 @@ import haxework.view.group.VGroupView;
             switch event.keyCode {
                 case Keyboard.ESCAPE:
                     switcher.change(StartFrame.ID);
+                case Keyboard.F:
+                    Device.toggleFullScreen();
                 case _:
             }
         });
diff --git a/src/haxe/ru/m/puzzlez/view/StartFrame.hx b/src/haxe/ru/m/puzzlez/view/StartFrame.hx
index fc952a9..9f019b4 100644
--- a/src/haxe/ru/m/puzzlez/view/StartFrame.hx
+++ b/src/haxe/ru/m/puzzlez/view/StartFrame.hx
@@ -1,5 +1,7 @@
 package ru.m.puzzlez.view;
 
+import openfl.display.StageDisplayState;
+import flash.Lib;
 import haxework.view.data.DataView;
 import haxework.view.form.ButtonView;
 import haxework.view.frame.FrameSwitcher;
@@ -22,6 +24,7 @@ import ru.m.update.Updater;
     @:view("load") var loadButton:ButtonView;
     @:view("complete") var completeButton:ButtonView;
     @:view("update") var updateButton:ButtonView;
+    @:view("fullscreen") var fullscreenButton:ButtonView;
 
     @:provide var storage:ImageStorage;
     @:provide var switcher:FrameSwitcher;
@@ -30,6 +33,7 @@ import ru.m.update.Updater;
 
     public function new() {
         super(ID);
+        fullscreenButton.visible = Device.fullScreenSupport;
         var data:Array<ImageListSource> = [];
         data.push({title: "Assets", source: storage.sources.get(AssetSource.ID)});
         data.push({title: "Files", source: storage.sources.get(FileSource.ID)});
diff --git a/src/haxe/ru/m/puzzlez/view/StartFrame.yaml b/src/haxe/ru/m/puzzlez/view/StartFrame.yaml
index c4c16ff..275797f 100644
--- a/src/haxe/ru/m/puzzlez/view/StartFrame.yaml
+++ b/src/haxe/ru/m/puzzlez/view/StartFrame.yaml
@@ -47,6 +47,11 @@ views:
         style: button.active
         +onPress: ~appUpdater.download()
         visible: false
+      - id: fullscreen
+        $type: haxework.view.form.ButtonView
+        text: Fullscreen
+        +onPress: ~Device.toggleFullScreen()
+        visible: false
   - $type: haxework.view.form.LabelView
     text: $r:text:version
     geometry.position: absolute