How to modify Flappy Bird?

I was thinking about modifying Flappy Bird and making a Minecraft version. Can someone tell me how in the comments, link me to a tutorial, or email me (minejaxyt@gmail.com)?

Mine

I don't think that's actually quite possible, as it's an iOS app and you don't have access to the data, unless you contact the developer for it (which I highly doubt he'll give it away). I think you're gonna have to start from scratch and make the game from the ground up in your own fashion.

Andy