Launched Flappy Bird game with Passport.js, Piyush Kumar posted on the topic

Flappy Bird Offline

How to Download & Install Flappy Bird on Your Android Phone or Tablet Without Using Google Play « Android :: Gadget Hacks

Flappy Bird developer says he took down game because it was addictive - Los Angeles Times

Creator pulls 'Flappy Bird' from app stores

Flappy Bird' begins to disappear from App Store and Google Play

Waiting for Flappy Bird to return? Clone yourself one with just $99

Indie smash hit 'Flappy Bird' racks up $50K per day in ad revenue - The Verge

Bird Gotta Fly: Why Flappy Bird Flew The Coop

Dong Nguyen's Follow-up to Flappy Bird, Swing Copters, is Now Live on Google Play

Flappy Bird's gone from the App Store - but you can still get the game