Flappy Bird. Over the last few weeks, this almost insultingly simple Helicopter clone with Mario-like graphics has experienced one of the craziest roller coaster rides in the history of gaming. When the game peaked at the start of February, it was being downloaded millions of times per day, and accruing the developer, Dong Nguyen, hundreds of thousands of dollars in advertising revenue. Yesterday, though, saying it had ruined his life, Nguyen removed Flappy Bird from the iOS and Android app stores. Does that make it OK to pirate the game, or not?