Examine source code of Maze Game Basic Fun

{
  "manifest_version": 2,
  "name": "Maze Game Basic Fun",
  "version": "1.0",
  "description": "Maze Game is an interesting game. In this game, the player controls a square moving through the maze to reach the destination. The game uses arrow keys to move.",
  "permissions": [],
  "browser_action": {
    "default_popup": "game.html",
    "default_icon": {
      "128": "images/maze-logo.png"
    }
  },
  "icons": {
    "128": "images/maze-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2c04b6f5-ecc0-48fc-ab81-7c680ba2cec8}"
    }
  }
}