diff --git a/apps/wolf_3d_gui/lib/main.dart b/apps/wolf_3d_gui/lib/main.dart
index 2b39f3d..7a42dd3 100644
--- a/apps/wolf_3d_gui/lib/main.dart
+++ b/apps/wolf_3d_gui/lib/main.dart
@@ -4,7 +4,9 @@
 /// before presenting the game-selection flow.
 library;
 
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
+import 'package:window_manager/window_manager.dart';
 import 'package:wolf_3d_flutter/wolf_3d_flutter.dart';
 import 'package:wolf_3d_gui/screens/game_screen.dart';
 
@@ -12,6 +14,10 @@ import 'package:wolf_3d_gui/screens/game_screen.dart';
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
+  if (_supportsDesktopWindowing) {
+    await windowManager.ensureInitialized();
+  }
+
   final Wolf3d wolf3d = await Wolf3d().init();
 
   runApp(
@@ -23,6 +29,19 @@ void main() async {
   );
 }
 
+bool get _supportsDesktopWindowing {
+  if (kIsWeb) {
+    return false;
+  }
+
+  return switch (defaultTargetPlatform) {
+    TargetPlatform.linux ||
+    TargetPlatform.windows ||
+    TargetPlatform.macOS => true,
+    _ => false,
+  };
+}
+
 class _NoGameDataScreen extends StatelessWidget {
   const _NoGameDataScreen();
 
diff --git a/apps/wolf_3d_gui/lib/screens/game_screen.dart b/apps/wolf_3d_gui/lib/screens/game_screen.dart
index 14adf53..ff1b928 100644
--- a/apps/wolf_3d_gui/lib/screens/game_screen.dart
+++ b/apps/wolf_3d_gui/lib/screens/game_screen.dart
@@ -1,11 +1,16 @@
 /// Active gameplay screen for the Flutter host.
 library;
 
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:window_manager/window_manager.dart';
 import 'package:wolf_3d_dart/wolf_3d_engine.dart';
 import 'package:wolf_3d_dart/wolf_3d_renderer.dart';
 import 'package:wolf_3d_flutter/wolf_3d_flutter.dart';
+import 'package:wolf_3d_flutter/wolf_3d_input_flutter.dart';
 import 'package:wolf_3d_renderer/wolf_3d_ascii_renderer.dart';
 import 'package:wolf_3d_renderer/wolf_3d_flutter_renderer.dart';
 import 'package:wolf_3d_renderer/wolf_3d_glsl_renderer.dart';
@@ -16,14 +21,28 @@ enum RendererMode {
   hardware,
 }
 
+typedef HostShortcutHandler =
+    bool Function(
+      KeyEvent event,
+      Wolf3dFlutterInput input,
+    );
+
 /// Launches a [WolfEngine] via [Wolf3d] and exposes renderer/input integrations.
 class GameScreen extends StatefulWidget {
   /// Shared application facade owning the engine, audio, and input.
   final Wolf3d wolf3d;
 
+  /// Optional host-level shortcut override.
+  ///
+  /// Return `true` when the event was consumed. Handlers may call
+  /// [Wolf3dFlutterInput.suppressActionOnce] to keep actions from reaching the
+  /// engine update loop.
+  final HostShortcutHandler? hostShortcutHandler;
+
   /// Creates a gameplay screen driven by [wolf3d].
   const GameScreen({
     required this.wolf3d,
+    this.hostShortcutHandler,
     super.key,
   });
 
@@ -155,6 +174,10 @@ class _GameScreenState extends State<GameScreen> {
       return;
     }
 
+    if (_handleHostShortcut(event)) {
+      return;
+    }
+
     if (event.logicalKey == widget.wolf3d.input.rendererToggleKey) {
       setState(_cycleRendererMode);
       return;
@@ -218,4 +241,61 @@ class _GameScreenState extends State<GameScreen> {
   void _toggleGlslEffects() {
     _glslEffectsEnabled = !_glslEffectsEnabled;
   }
+
+  bool _handleHostShortcut(KeyEvent event) {
+    final HostShortcutHandler? customHandler = widget.hostShortcutHandler;
+    if (customHandler != null) {
+      return customHandler(event, widget.wolf3d.input);
+    }
+
+    if (_isAltEnter(event)) {
+      // Consume Enter so fullscreen toggling does not also activate menu items.
+      widget.wolf3d.input.suppressInteractOnce();
+      unawaited(_toggleFullscreen());
+      return true;
+    }
+
+    return false;
+  }
+
+  bool _isAltEnter(KeyEvent event) {
+    final bool isEnter =
+        event.logicalKey == LogicalKeyboardKey.enter ||
+        event.logicalKey == LogicalKeyboardKey.numpadEnter;
+    if (!isEnter) {
+      return false;
+    }
+
+    final Set<LogicalKeyboardKey> pressedKeys =
+        HardwareKeyboard.instance.logicalKeysPressed;
+    return pressedKeys.contains(LogicalKeyboardKey.altLeft) ||
+        pressedKeys.contains(LogicalKeyboardKey.altRight) ||
+        pressedKeys.contains(LogicalKeyboardKey.alt);
+  }
+
+  Future<void> _toggleFullscreen() async {
+    if (!_supportsDesktopWindowing) {
+      return;
+    }
+
+    try {
+      final bool isFullScreen = await windowManager.isFullScreen();
+      await windowManager.setFullScreen(!isFullScreen);
+    } on MissingPluginException {
+      // No-op on hosts where the window manager plugin is unavailable.
+    }
+  }
+
+  bool get _supportsDesktopWindowing {
+    if (kIsWeb) {
+      return false;
+    }
+
+    return switch (defaultTargetPlatform) {
+      TargetPlatform.linux ||
+      TargetPlatform.windows ||
+      TargetPlatform.macOS => true,
+      _ => false,
+    };
+  }
 }
diff --git a/apps/wolf_3d_gui/linux/flutter/generated_plugin_registrant.cc b/apps/wolf_3d_gui/linux/flutter/generated_plugin_registrant.cc
index 1830e5c..d7f5477 100644
--- a/apps/wolf_3d_gui/linux/flutter/generated_plugin_registrant.cc
+++ b/apps/wolf_3d_gui/linux/flutter/generated_plugin_registrant.cc
@@ -7,9 +7,17 @@
 #include "generated_plugin_registrant.h"
 
 #include <audioplayers_linux/audioplayers_linux_plugin.h>
+#include <screen_retriever_linux/screen_retriever_linux_plugin.h>
+#include <window_manager/window_manager_plugin.h>
 
 void fl_register_plugins(FlPluginRegistry* registry) {
   g_autoptr(FlPluginRegistrar) audioplayers_linux_registrar =
       fl_plugin_registry_get_registrar_for_plugin(registry, "AudioplayersLinuxPlugin");
   audioplayers_linux_plugin_register_with_registrar(audioplayers_linux_registrar);
+  g_autoptr(FlPluginRegistrar) screen_retriever_linux_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "ScreenRetrieverLinuxPlugin");
+  screen_retriever_linux_plugin_register_with_registrar(screen_retriever_linux_registrar);
+  g_autoptr(FlPluginRegistrar) window_manager_registrar =
+      fl_plugin_registry_get_registrar_for_plugin(registry, "WindowManagerPlugin");
+  window_manager_plugin_register_with_registrar(window_manager_registrar);
 }
diff --git a/apps/wolf_3d_gui/linux/flutter/generated_plugins.cmake b/apps/wolf_3d_gui/linux/flutter/generated_plugins.cmake
index e9abb91..de49b37 100644
--- a/apps/wolf_3d_gui/linux/flutter/generated_plugins.cmake
+++ b/apps/wolf_3d_gui/linux/flutter/generated_plugins.cmake
@@ -4,6 +4,8 @@
 
 list(APPEND FLUTTER_PLUGIN_LIST
   audioplayers_linux
+  screen_retriever_linux
+  window_manager
 )
 
 list(APPEND FLUTTER_FFI_PLUGIN_LIST
diff --git a/apps/wolf_3d_gui/pubspec.yaml b/apps/wolf_3d_gui/pubspec.yaml
index 017a964..4e47cdf 100644
--- a/apps/wolf_3d_gui/pubspec.yaml
+++ b/apps/wolf_3d_gui/pubspec.yaml
@@ -12,6 +12,7 @@ dependencies:
   wolf_3d_dart:
   wolf_3d_renderer: any
   wolf_3d_flutter: any
+  window_manager: ^0.5.1
 
   flutter:
     sdk: flutter
diff --git a/packages/wolf_3d_flutter/lib/wolf_3d_input_flutter.dart b/packages/wolf_3d_flutter/lib/wolf_3d_input_flutter.dart
index ae8e20c..ebfd121 100644
--- a/packages/wolf_3d_flutter/lib/wolf_3d_input_flutter.dart
+++ b/packages/wolf_3d_flutter/lib/wolf_3d_input_flutter.dart
@@ -95,6 +95,7 @@ class Wolf3dFlutterInput extends Wolf3dInput {
   double _mouseDeltaY = 0.0;
   bool _previousMouseRightDown = false;
   bool _queuedBack = false;
+  final Set<WolfInputAction> _suppressedActionsOnce = <WolfInputAction>{};
 
   // Mouse-look is optional so touch or keyboard-only hosts can keep the same
   // adapter without incurring accidental pointer-driven movement.
@@ -153,8 +154,21 @@ class Wolf3dFlutterInput extends Wolf3dInput {
     _queuedBack = true;
   }
 
+  /// Suppresses [action] for the next [update] tick only.
+  void suppressActionOnce(WolfInputAction action) {
+    _suppressedActionsOnce.add(action);
+  }
+
+  /// Convenience helper for host shortcuts that consume Enter/Interact.
+  void suppressInteractOnce() {
+    suppressActionOnce(WolfInputAction.interact);
+  }
+
   /// Returns whether any bound key for [action] is currently pressed.
   bool _isActive(WolfInputAction action, Set<LogicalKeyboardKey> pressedKeys) {
+    if (_suppressedActionsOnce.contains(action)) {
+      return false;
+    }
     return bindings[action]!.any((key) => pressedKeys.contains(key));
   }
 
@@ -163,6 +177,9 @@ class Wolf3dFlutterInput extends Wolf3dInput {
     WolfInputAction action,
     Set<LogicalKeyboardKey> newlyPressed,
   ) {
+    if (_suppressedActionsOnce.contains(action)) {
+      return false;
+    }
     return bindings[action]!.any((key) => newlyPressed.contains(key));
   }
 
@@ -223,5 +240,6 @@ class Wolf3dFlutterInput extends Wolf3dInput {
     _previousKeys = Set.from(pressedKeys);
     _previousMouseRightDown = isMouseRightDown;
     _queuedBack = false;
+    _suppressedActionsOnce.clear();
   }
 }