Flappy Bird isn't even a rewarding game, so it's a weird thing to base a project around. No one I know can score higher than 5 in Flappy Bird.
Now I still play sometimes, almost as a way of relaxing. Once you get the hang of it, it's easy, but you still have to pay attention and you can still get tripped up. I'd say it's a very rewarding game.
Just yesterday I finally beat my friend's score of 171 with 203.