Examine source code of GTA Games Basic

{
  "manifest_version": 2,
  "name": "GTA Games Basic",
  "version": "1.0",
  "description": "Simple game template widget with basic elements, simulating a top-down perspective game where you can control a car in the city. This game is just a very basic and minimalist version for illustration and entertainment",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/gta-logo.png"
    }
  },
  "icons": {
    "128": "images/gta-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e91de2a0-500b-408a-a591-c51e4b50ca00}"
    }
  }
}