The original Jetpack Joyride released in 2011 and was a huge mobile hit for developer Halfbrick, who was already enjoying a great deal of success with 2010's Fruit Ninja. The game was ported to many platforms, including PlayStation consoles, and was still receiving updates as recently as a month ago. Even for hits, sequels are not inevitable in the world of mobile games, as most of them are treated as ongoing platforms, but more than a year ago, Halfbrick surprise announced Jetpack Joyride...