Asteroids

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Asteroids",
  "version": "1.0",
  "manifest_version": 2,
  "description": "Classic asteroids made in Javascript!",
  "icons": {
    "128": "asteroids_logo_128.jpg"
  },
  "browser_action": {
    "default_icon": "asteroids_logo.jpg",
    "default_popup": "index.html",
    "default_title": "Asteroids"
  },
  "permissions": [
    "activeTab"
  ],
  "content_security_policy": "script-src 'self' https://example.com; object-src 'self'"
}