I had NO idea Flappy Bird ripped off something else FIRST. Like that's very strange; this could've been a hit game in 2011 but of course Temple Run was the crap at the time, alongside it's many clones and young Flappy too is experiencing similar experiences, but not anymore now that Ik it's a clone of THIS released two years BEFORE it. Of course, Flappy is gone now so I guess in the end the original did triumph.
Most fanboys will say this game copied Flappy, but if so then think about this:
This game came out in 2011. Flappy Bird came out in 2013. And NO it did not undergo a yearly development cycle the creator confirmed the game only took a few days to make and that's also when the concept was gotten from. So in the end, Flappy was a clone all along. And a DEAD ON clone might I add, with the only difference being the setting of the bird. Desert here, city for Flappy. Like, yes it did rip it off entirely I mean it's just too coincidental for Dong to claim he didn't know about this game; his copied off this entirely.