No, it was like a series of mad platforming worlds--not too challenging, because this is a Mario game after all--but the twist in the tail was that you couldn't take any damage at all or you'd die. You had to make a flawless run through 5 or 6 different worlds, each with their own unique mechanics, in order to beat the mission. And in the last segment, you had to kill a bunch of those turtles that throw boomerangs without getting hit yourself and without falling off the platforms. It believe it was called Grandmaster Galaxy