Demo: https://chrome.google.com/webstore/detail/flappy-bird-offline/pidkjcapccmhpdokcjnkngcflobhopdl?

The classic Flappy Bird game offline version on your Google Chrome!
Flappy Bird Offline
Play flappy bird on your browser. Click on the screen, or use your spacebar to get started. Fly the bird as far as you can without hitting a pipe.
1. Install extension,
2. Click the Flappy Bird icon on the Chrome toolbar and we will open a Flappy Bird for you to play the game! You don’t need to do anything else!
Have fun!