Stacker - Falling blocks!

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "$schema": "https://json.schemastore.org/chrome-manifest",
  "name": "Stacker - Falling blocks!",
  "short_name": "Stacker",
  "version": "2.2.23",
  "description": "A fun arcade game that plays in a popup. Stack falling tetra blocks without hitting the ceiling!",
  "icons": {
    "16": "./icons/icon16.png",
    "24": "./icons/icon24.png",
    "32": "./icons/icon32.png",
    "48": "./icons/icon48.png",
    "128": "./icons/icon128.png",
    "256": "./icons/icon256.png"
  },
  "background": {
    "service_worker": "background-bundle.js"
  },
  "action": {
    "default_icon": {
      "16": "./icons/icon16.png",
      "24": "./icons/icon24.png",
      "32": "./icons/icon32.png",
      "48": "./icons/icon48.png",
      "128": "./icons/icon128.png",
      "256": "./icons/icon256.png"
    },
    "default_title": "Stacker",
    "default_popup": "index.html"
  },
  "permissions": [
    "storage"
  ],
  "offline_enabled": true,
  "manifest_version": 3
}