Examine source code of Snake Basic Game

{
  "manifest_version": 2,
  "name": "Snake Basic Game",
  "version": "1.0",
  "description": "Snake game is an interesting game with simple gameplay by moving the snake to eat bait items to increase points. If you touch the frame you will lose",
  "browser_action": {
    "default_popup": "snake.html",
    "default_icon": {
      "16": "images/snake-logo.png",
      "48": "images/snake-logo.png",
      "128": "images/snake-logo.png"
    }
  },
  "icons": {
    "16": "images/snake-logo.png",
    "48": "images/snake-logo.png",
    "128": "images/snake-logo.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f7b67cc1-63ed-4cf4-a03b-6b5fdbd80dd6}"
    }
  }
}