As there's more choice, people seem to be more interested in what others are doing, so when something gets some traction it can grow very big very fast. (And this game had some help at the start, it seems).
If it wasn't Flappy Bird, it would be something else. But this game does have the key elements: simple, accessible, shareable.
If it wasn't Flappy Bird, it would be something else. But this game does have the key elements: simple, accessible, shareable.