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manifest.json
{
  "update_url": "http://clients2.google.com/service/update2/crx",
  "name": "Dual Battle",
  "description": "Dual Battle is a breakout clone with a twist of two paddles. Basic game, only one level, my first attempt at app games. Enjoy!",
  "version": "3.0",
  "manifest_version": 2,
  "app": {
    "launch": {
      "local_path": "index.html"
    }
  },
  "icons": {
    "16": "icon_16.png",
    "128": "icon_128.png"
  },
  "permissions": [
    "unlimitedStorage"
  ],
  "offline_enabled": true
}