Flappy Bird is one of those games that hooks you by simply being frustratingly difficult. The reason you keep playing is because on surface it seems so easy that you are not willing to accept that you are not great at it, so you keep trying to prove yourself wrong again and again. Add to the fact that everyone seems to be playing it these days and comparing scores, you are almost obligated to play it as well just to see if you can beat them at it. It’s simple and fun and also free to download. So if you haven’t already, give it a try. You’ll regret it almost instantly when you can’t stop playing.