Chris Buffa (Modojo): Flappy Bird is a rare breed of video game. It debuted last year and almost nobody cared. Now it's the top game on the iOS App Store. It's the sort of viral phenomenon that is bound to flap its way into pop culture, as everyone has his or her own high scores and personal opinions on how to improve yours. A friend thinks it's like Dark Souls for Xbox 360 and PS3. A cool comparison, but we think it's like the water level from Super Mario Bros.