I actually missed the flappy bird craze, never played it, but everybody said the cutesy lollipop game that was an Easter Egg in the Android Lollipop update was basically the same thing.
Funny how I've scored so far. Most of the time I die after one or two, then I got 10, but didn't come CLOSE to that again for a while. Then out of the blue I got 19, and then went right back to twos and threes.