Remember Flappy Bird? The game that took the app stores by storm and made everyone wonder how can such a simple yet hard to play game be so addictive? Well, now you can find the source code of its clone made in HTML5, using MelonJS and is named Clumsy Bird. This game is developed by Ellison Leão and he has made an easy customizing guide also available for his game, in case you get inspired to clone this clone.