diff --git a/electron/main.js b/electron/main.js
index 84e1a45..61cafa8 100644
--- a/electron/main.js
+++ b/electron/main.js
@@ -2,12 +2,15 @@ const { app, BrowserWindow } = require('electron')
 const path = require('path')
 
 app.whenReady().then(() => {
+  const sceneArg = process.argv.find(a => a.startsWith('--scene='))
+  const query = sceneArg ? { scene: sceneArg.split('=')[1] } : {}
+
   const win = new BrowserWindow({
     fullscreen: true,
     autoHideMenuBar: true,
     webPreferences: { nodeIntegration: false }
   })
-  win.loadFile(path.join(__dirname, '..', 'dist', 'index.html'))
+  win.loadFile(path.join(__dirname, '..', 'dist', 'index.html'), { query })
 })
 
 app.on('window-all-closed', () => app.quit())
diff --git a/src/App.vue b/src/App.vue
index b2986ce..0d6c56f 100644
--- a/src/App.vue
+++ b/src/App.vue
@@ -43,8 +43,25 @@ const { loadGame, start, resumeAutoSave, makeChoice, clickHotspot, startChapter,
   saveGame, loadGameFromSlot, refreshSaves, saveSystem, engine } =
   useGameEngine(() => [videoElA.value, videoElB.value])
 
+async function resolveScenePath(): Promise<string> {
+  const params = new URLSearchParams(location.search)
+  const queryScene = params.get('scene')
+  if (queryScene) return queryScene.startsWith('/') ? queryScene : '/' + queryScene
+
+  try {
+    const resp = await fetch('/scenes/config.json')
+    if (resp.ok) {
+      const config = await resp.json()
+      if (config.sceneFile) return '/scenes/' + config.sceneFile
+    }
+  } catch { /* config.json optional */ }
+
+  return '/scenes/main.json'
+}
+
 async function init() {
-  await loadGame('/scenes/demo.json')
+  const scenePath = await resolveScenePath()
+  await loadGame(scenePath)
   loading.value = false
   hasAutoSave.value = (await saveSystem.load(0)) !== null
 }