diff --git a/app/src/client/mod.rs b/app/src/client/mod.rs
index e1daf52a2f..b017228ccd 100644
--- a/app/src/client/mod.rs
+++ b/app/src/client/mod.rs
@@ -70,6 +70,7 @@ pub async fn run(
         .ui_renderer(true)
         .with_asset_cache(assets)
         .headless(headless)
+        .debug(is_debug)
         .update_title_with_fps_stats(false)
         .run(move |app, _runtime| {
             *app.world.resource_mut(window_title()) = "Ambient".to_string();
@@ -89,26 +90,34 @@ pub async fn run(
 }
 
 #[element_component]
-fn TitleUpdater(hooks: &mut Hooks) -> Element {
+fn TitleUpdater(hooks: &mut Hooks, debug: bool) -> Element {
     let (net, _) = use_remote_resource(hooks, client_network_stats()).expect("No game client");
 
     let world = &hooks.world;
     let title = world.resource(window_title());
-    let fps = world
-        .get_cloned(hooks.world.resource_entity(), fps_stats())
-        .ok()
-        .filter(|f| !f.fps().is_nan());
-
-    let title = match (fps, net) {
-        (None, None) => title.clone(),
-        (Some(fps), None) => format!("{} [{}]", title, fps.dump_both()),
-        (None, Some(net)) => format!("{} [{}]", title, net),
-        (Some(fps), Some(net)) => format!("{} [{}, {}]", title, fps.dump_both(), net),
-    };
-    world
-        .resource(window_ctl())
-        .send(WindowCtl::SetTitle(title))
-        .ok();
+
+    if debug {
+        let fps = world
+            .get_cloned(hooks.world.resource_entity(), fps_stats())
+            .ok()
+            .filter(|f| !f.fps().is_nan());
+
+        let title = match (fps, net) {
+            (None, None) => title.clone(),
+            (Some(fps), None) => format!("{} [{}]", title, fps.dump_both()),
+            (None, Some(net)) => format!("{} [{}]", title, net),
+            (Some(fps), Some(net)) => format!("{} [{}, {}]", title, fps.dump_both(), net),
+        };
+        world
+            .resource(window_ctl())
+            .send(WindowCtl::SetTitle(title))
+            .ok();
+    } else {
+        world
+            .resource(window_ctl())
+            .send(WindowCtl::SetTitle(title.clone()))
+            .ok();
+    }
 
     Element::new()
 }
@@ -173,7 +182,7 @@ fn MainApp(
             cert,
             create_rpc_registry: cb(shared::create_server_rpc_registry),
             inner: Dock::el(vec![
-                TitleUpdater.el(),
+                TitleUpdater::el(show_debug),
                 if let Some(golden_image_cmd) = golden_image_cmd.filter(|_| loaded) {
                     GoldenImageTest::el(golden_image_output_dir, golden_image_cmd)
                 } else {
diff --git a/crates/app/src/lib.rs b/crates/app/src/lib.rs
index b80d6e7e9f..dceeed2614 100644
--- a/crates/app/src/lib.rs
+++ b/crates/app/src/lib.rs
@@ -43,6 +43,7 @@ use winit::{
     dpi::PhysicalPosition,
     event::{ElementState, Event, KeyboardInput, ModifiersState, VirtualKeyCode, WindowEvent},
     event_loop::{ControlFlow, EventLoop},
+    platform::macos::WindowExtMacOS,
     window::{CursorGrabMode, Fullscreen, Window, WindowBuilder},
 };
 
@@ -190,6 +191,7 @@ pub struct AppBuilder {
     pub main_renderer: bool,
     pub examples_systems: bool,
     pub headless: Option<UVec2>,
+    debug: bool,
     pub update_title_with_fps_stats: bool,
     #[cfg(target_os = "unknown")]
     pub parent_element: Option<web_sys::HtmlElement>,
@@ -221,6 +223,7 @@ impl AppBuilder {
             main_renderer: true,
             examples_systems: false,
             headless: None,
+            debug: false,
             update_title_with_fps_stats: true,
             #[cfg(target_os = "unknown")]
             parent_element: None,
@@ -268,6 +271,11 @@ impl AppBuilder {
         self
     }
 
+    pub fn debug(mut self, debug: bool) -> Self {
+        self.debug = debug;
+        self
+    }
+
     pub fn update_title_with_fps_stats(mut self, value: bool) -> Self {
         self.update_title_with_fps_stats = value;
         self
@@ -290,6 +298,7 @@ impl AppBuilder {
 
         let settings = SettingsKey.get(&assets);
 
+        #[cfg(not(target_os = "windows"))]
         let (window, event_loop) = if self.headless.is_some() {
             (None, None)
         } else {
@@ -299,6 +308,26 @@ impl AppBuilder {
                 height: settings.resolution().1,
             });
             let window = Arc::new(window.build(&event_loop).unwrap());
+            window.set_simple_fullscreen(!self.debug);
+            (Some(window), Some(event_loop))
+        };
+
+        #[cfg(target_os = "windows")]
+        let (window, event_loop) = if self.headless.is_some() {
+            (None, None)
+        } else {
+            let event_loop = self.event_loop.unwrap_or_else(EventLoop::new);
+
+            let monitor = event_loop.primary_monitor().unwrap();
+            let video_mode = monitor.video_modes().next().unwrap();
+            let window = WindowBuilder::new()
+                .with_inner_size(winit::dpi::LogicalSize {
+                    width: settings.resolution().0,
+                    height: settings.resolution().1,
+                })
+                .with_fullscreen(Some(Fullscreen::Exclusive(video_mode)));
+            let window = Arc::new(window.build(&event_loop).unwrap());
+            window.set_simple_fullscreen(!self.debug);
             (Some(window), Some(event_loop))
         };
 
@@ -588,6 +617,23 @@ impl App {
                         },
                         control_flow,
                     );
+                } else if let Event::WindowEvent {
+                    event:
+                        WindowEvent::KeyboardInput {
+                            input:
+                                KeyboardInput {
+                                    state: ElementState::Pressed,
+                                    virtual_keycode: Some(VirtualKeyCode::Escape),
+                                    ..
+                                },
+                            ..
+                        },
+                    ..
+                } = &event
+                {
+                    if let Some(window) = self.window.as_ref() {
+                        window.set_simple_fullscreen(false);
+                    }
                 } else if let Some(event) = event.to_static() {
                     self.handle_static_event(&event, control_flow);
                 }