<p>Flappy Bird and all of the clones that came after it was a while ago now. I'd almost forgot about it. But then Flappy Defense popped up.</p><p>To clarify: it's not a clone of Flappy Bird. It does, however, use "Flappy" in its title, and also features flappy birds and green pipes.</p><p>It's actually an action-based tower defense game. The idea is to keep a whole flock of flappy birds back by shooting them with a cannon.</p><p>If you have any pent-up anger or frustration left over from playing (and failing at) Flappy Bird then perhaps this is a good way of letting it out.</p>.