diff --git a/packages/desktop/__tests__/laser-view.test.ts b/packages/desktop/__tests__/laser-view.test.ts
index da849ee..399ac97 100644
--- a/packages/desktop/__tests__/laser-view.test.ts
+++ b/packages/desktop/__tests__/laser-view.test.ts
@@ -23,8 +23,15 @@ jest.mock('electron', () => ({
 let brainProject: string | null = 'grace';
 jest.mock('@/main/brain', () => ({ status: () => ({ project: brainProject }) }));
 jest.mock('@/main/operator-session', () => ({ embeddedUrl: (url: string) => `${url}#wg_token=t` }));
+const windowSend = jest.fn();
 jest.mock('@/main/runtime', () => ({
-  runtime: { mainWindow: { isDestroyed: () => false, contentView: { addChildView: jest.fn() } } }
+  runtime: {
+    mainWindow: {
+      isDestroyed: () => false,
+      contentView: { addChildView: jest.fn() },
+      webContents: { send: windowSend }
+    }
+  }
 }));
 
 import { invalidateLaserView, resetLaserView, syncLaser } from '@/main/laser-view';
@@ -43,6 +50,8 @@ beforeEach(() => {
   brainProject = 'grace';
   webContents.loadURL.mockReset().mockResolvedValue(undefined);
   viewInstance.setVisible.mockClear();
+  webContents.on.mockClear();
+  windowSend.mockClear();
 });
 
 afterEach(() => jest.useRealTimers());
@@ -154,6 +163,24 @@ it('does not put the stopped show back on screen when the next one starts', asyn
   expect(visibility().at(-1)).toBe(true);
 });
 
+it('tells the renderer about Escape pressed inside the embedded UI', () => {
+  show();
+  const onInput = webContents.on.mock.calls.find(([e]) => e === 'before-input-event')?.[1] as (
+    e: unknown,
+    input: { type: string; key: string }
+  ) => void;
+
+  // Full screen leaves the embedded UI focused, so the renderer's own keydown
+  // listener never fires and this is the only way back out.
+  onInput({}, { type: 'keyDown', key: 'Escape' });
+  expect(windowSend).toHaveBeenCalledWith('laser:escape');
+
+  windowSend.mockClear();
+  onInput({}, { type: 'keyUp', key: 'Escape' });
+  onInput({}, { type: 'keyDown', key: 'a' });
+  expect(windowSend).not.toHaveBeenCalled();
+});
+
 it('does not reload an unchanged url on every sync', async () => {
   show();
   await flush();
diff --git a/packages/desktop/src/main/laser-view.ts b/packages/desktop/src/main/laser-view.ts
index bef0c59..2b8fab2 100644
--- a/packages/desktop/src/main/laser-view.ts
+++ b/packages/desktop/src/main/laser-view.ts
@@ -131,6 +131,13 @@ function ensureView(): WebContentsView | null {
     void shell.openExternal(url);
     return { action: 'deny' };
   });
+  // While the embedded UI is full screen it is the only focused thing on the
+  // window, so its own web contents sees Escape and the renderer never would —
+  // without this there is no keyboard way back out.
+  created.webContents.on('before-input-event', (_e, input) => {
+    if (input.type !== 'keyDown' || input.key !== 'Escape') return;
+    if (!win.isDestroyed()) win.webContents.send('laser:escape');
+  });
   created.webContents.on('did-fail-load', (_e, _code, _desc, _url, isMainFrame) => {
     if (isMainFrame && desiredUrl && loadedUrl === desiredUrl) retryLater(desiredUrl);
   });
diff --git a/packages/desktop/src/preload.ts b/packages/desktop/src/preload.ts
index a4dbc0b..69dbae3 100644
--- a/packages/desktop/src/preload.ts
+++ b/packages/desktop/src/preload.ts
@@ -128,6 +128,11 @@ contextBridge.exposeInMainWorld('wavegrid', api);
 
 // Fire-and-forget channel the renderer uses to position the native laser view.
 const laser: WavegridLaser = {
-  sync: (state: LaserSyncState) => ipcRenderer.send('laser:sync', state)
+  sync: (state: LaserSyncState) => ipcRenderer.send('laser:sync', state),
+  onEscape: (handler: () => void) => {
+    const listener = () => handler();
+    ipcRenderer.on('laser:escape', listener);
+    return () => ipcRenderer.off('laser:escape', listener);
+  }
 };
 contextBridge.exposeInMainWorld('wavegridLaser', laser);
diff --git a/packages/desktop/src/renderer/routes/show-route.tsx b/packages/desktop/src/renderer/routes/show-route.tsx
index 2e40840..6cb0a5e 100644
--- a/packages/desktop/src/renderer/routes/show-route.tsx
+++ b/packages/desktop/src/renderer/routes/show-route.tsx
@@ -1,4 +1,4 @@
-import { AlertTriangle, MonitorPlay, Play, Square } from 'lucide-react';
+import { AlertTriangle, Maximize2, Minimize2, MonitorPlay, Play, Square } from 'lucide-react';
 import * as React from 'react';
 
 import { Badge } from '@/components/ui/badge';
@@ -37,10 +37,32 @@ export function ShowRoute({ status, activeProject, onStart, onStop, busy }: Show
   // would be buried under it. Hide it for as long as an overlay is up.
   const [overlay, setOverlay] = React.useState(false);
   React.useEffect(() => watchOverlays(document, setOverlay), []);
+  // In the windowed panel the grid is a postage stamp; full screen hands the
+  // embedded UI the whole window and keeps only the bar that gets back out.
+  const [expanded, setExpanded] = React.useState(false);
 
   const running = status.running;
   const url = status.url;
 
+  React.useEffect(() => {
+    if (!expanded) return;
+    const onKey = (e: KeyboardEvent) => {
+      if (e.key === 'Escape') setExpanded(false);
+    };
+    window.addEventListener('keydown', onKey);
+    // The embedded UI has focus, so its own web contents — not this document —
+    // is what sees a keypress while it is full screen.
+    const offEmbedded = window.wavegridLaser.onEscape(() => setExpanded(false));
+    return () => {
+      window.removeEventListener('keydown', onKey);
+      offEmbedded();
+    };
+  }, [expanded]);
+
+  React.useEffect(() => {
+    if (!running) setExpanded(false);
+  }, [running]);
+
   // Report the laser view's target bounds to the main process on every layout
   // change while the show is running; hide it whenever we leave this route.
   React.useEffect(() => {
@@ -67,7 +89,26 @@ export function ShowRoute({ status, activeProject, onStart, onStop, busy }: Show
       window.removeEventListener('resize', sync);
       window.wavegridLaser.sync({ url: null, bounds: { x: 0, y: 0, width: 0, height: 0 }, visible: false });
     };
-  }, [running, url, overlay]);
+    // Full screen moves the slot, and the native view only follows the bounds we report.
+  }, [running, url, overlay, expanded]);
+
+  if (running && expanded) {
+    return (
+      <div className='bg-background fixed inset-0 z-40 flex flex-col'>
+        <div className='flex items-center justify-between gap-3 border-b px-3 py-1.5'>
+          <span className='text-muted-foreground truncate text-xs'>
+            {activeProject ?? 'Show'} · full screen
+          </span>
+          <Button size='sm' variant='ghost' onClick={() => setExpanded(false)}>
+            <Minimize2 />
+            Exit full screen (Esc)
+          </Button>
+        </div>
+        {/* The native laser WebContentsView is positioned over this slot. */}
+        <div ref={slotRef} className='flex-1' />
+      </div>
+    );
+  }
 
   return (
     <div className='flex h-full flex-col gap-4 p-4'>
@@ -85,6 +126,12 @@ export function ShowRoute({ status, activeProject, onStart, onStop, busy }: Show
         {running && status.lanUrls.length > 0 && (
           <ShareShow lanUrls={status.lanUrls} />
         )}
+        {running && (
+          <Button size='sm' variant='outline' className='ml-auto' onClick={() => setExpanded(true)}>
+            <Maximize2 />
+            Full screen
+          </Button>
+        )}
       </div>
 
       {/* Why the show isn't up (or is up without output) — a red dot with no
diff --git a/packages/desktop/src/types/ipc.ts b/packages/desktop/src/types/ipc.ts
index f1ed762..13dfd40 100644
--- a/packages/desktop/src/types/ipc.ts
+++ b/packages/desktop/src/types/ipc.ts
@@ -562,6 +562,9 @@ export interface OscDebugState {
 
 export interface WavegridLaser {
   sync(state: LaserSyncState): void;
+  /** Escape pressed inside the embedded UI, which owns its own key events and is
+   *  the only thing focused while it is full screen. Returns an unsubscribe. */
+  onEscape(handler: () => void): () => void;
 }
 
 declare global {
diff --git a/packages/ui/src/app.tsx b/packages/ui/src/app.tsx
index a0b69e0..eb137be 100644
--- a/packages/ui/src/app.tsx
+++ b/packages/ui/src/app.tsx
@@ -379,35 +379,68 @@ function ToolPanel({
 
 /* ---------- Master sliders (top bar on desktop, expandable on phone) ---------- */
 
+/** Speed is logarithmic — 0.01x to 5x — so the slider carries a percentage of
+ *  that curve rather than the multiplier itself. */
+const SPEED_MIN = 0.01;
+const SPEED_MAX = 5.0;
+const speedToPct = (v: number) =>
+  Math.round((Math.log(v / SPEED_MIN) / Math.log(SPEED_MAX / SPEED_MIN)) * 100);
+const pctToSpeed = (pct: number) => SPEED_MIN * Math.pow(SPEED_MAX / SPEED_MIN, pct / 100);
+const formatSpeed = (v: number) => `${v < 0.1 ? v.toFixed(3) : v < 1 ? v.toFixed(2) : v.toFixed(1)}x`;
+
+interface MasterSlider {
+  label: string;
+  value: number;
+  display: string;
+  handler: (pct: number) => void;
+  flex: number;
+}
+
 function MasterSliders({
   masterBright,
   smoothness,
   attack,
+  animSpeed,
   onMasterBright,
   onSmooth,
   onAttack,
+  onAnimSpeed,
   throttledSlider,
   vertical
 }: {
   masterBright: number;
   smoothness: number;
   attack: number;
+  animSpeed: number;
   onMasterBright: (v: number) => void;
   onSmooth: (v: number) => void;
   onAttack: (v: number) => void;
+  onAnimSpeed: (v: number) => void;
   throttledSlider: (handler: (v: number) => void) => (e: React.ChangeEvent<HTMLInputElement>) => void;
   vertical?: boolean;
 }) {
-  const sliders = [
-    { label: 'Bright', value: masterBright, handler: onMasterBright, flex: 1 },
-    { label: 'Fade', value: smoothness, handler: onSmooth, flex: 3 },
-    { label: 'Attack', value: attack, handler: onAttack, flex: 1 }
+  // The two an operator reaches for mid-show hold the fixed slots; brightness
+  // and attack get set once, so they live behind the disclosure.
+  const fixed: MasterSlider[] = [
+    {
+      label: 'Speed',
+      value: speedToPct(animSpeed),
+      display: formatSpeed(animSpeed),
+      handler: (pct) => onAnimSpeed(pctToSpeed(pct)),
+      flex: 2
+    },
+    { label: 'Fade', value: smoothness, display: String(smoothness), handler: onSmooth, flex: 3 }
+  ];
+  const extra: MasterSlider[] = [
+    { label: 'Bright', value: masterBright, display: String(masterBright), handler: onMasterBright, flex: 1 },
+    { label: 'Attack', value: attack, display: String(attack), handler: onAttack, flex: 1 }
   ];
+  const [showExtra, setShowExtra] = useState(false);
 
   if (vertical) {
     return (
       <div className="space-y-3 p-4">
-        {sliders.map((s) => (
+        {[...fixed, ...extra].map((s) => (
           <div key={s.label} className="flex items-center gap-3">
             <span className="text-sm font-medium" style={{ color: '#888898', minWidth: 56 }}>
               {s.label}
@@ -421,7 +454,7 @@ function MasterSliders({
               onChange={throttledSlider(s.handler)}
             />
             <span className="text-sm font-mono" style={{ color: '#888898', minWidth: 32, textAlign: 'right' }}>
-              {s.value}
+              {s.display}
             </span>
           </div>
         ))}
@@ -431,7 +464,7 @@ function MasterSliders({
 
   return (
     <>
-      {sliders.map((s) => (
+      {[...fixed, ...(showExtra ? extra : [])].map((s) => (
         <div key={s.label} className="flex items-center gap-2" style={{ minWidth: 0, flex: s.flex }}>
           <span className="text-xs font-medium shrink-0" style={{ color: '#888898', textTransform: 'uppercase', letterSpacing: '0.05em', fontSize: 11 }}>
             {s.label}
@@ -446,10 +479,24 @@ function MasterSliders({
             onChange={throttledSlider(s.handler)}
           />
           <span className="text-xs font-mono shrink-0" style={{ color: '#888898', minWidth: 28, textAlign: 'right' }}>
-            {s.value}
+            {s.display}
           </span>
         </div>
       ))}
+      <button
+        onClick={() => setShowExtra((v) => !v)}
+        title={showExtra ? 'Hide brightness and attack' : 'Brightness and attack'}
+        className="shrink-0 text-xs"
+        style={{
+          padding: '2px 8px',
+          borderRadius: 6,
+          background: showExtra ? 'rgba(74,124,255,0.15)' : 'transparent',
+          border: `1px solid ${showExtra ? '#4a7cff' : '#1a1a25'}`,
+          color: showExtra ? '#4a7cff' : '#888898'
+        }}
+      >
+        ⋯
+      </button>
     </>
   );
 }
@@ -896,9 +943,11 @@ export default function Home() {
               masterBright={masterBright}
               smoothness={smoothness}
               attack={attack}
+              animSpeed={animSpeed}
               onMasterBright={handleMasterBright}
               onSmooth={handleSmooth}
               onAttack={handleAttack}
+              onAnimSpeed={handleAnimSpeed}
               throttledSlider={throttledSlider}
               vertical
             />
@@ -1156,9 +1205,11 @@ export default function Home() {
             masterBright={masterBright}
             smoothness={smoothness}
             attack={attack}
+            animSpeed={animSpeed}
             onMasterBright={handleMasterBright}
             onSmooth={handleSmooth}
             onAttack={handleAttack}
+            onAnimSpeed={handleAnimSpeed}
             throttledSlider={throttledSlider}
           />
         </div>