in world 3, level 4, there is a way to get 100 lives. first, locate the part of the level where there is an upside down tunnel. this is where the actual event occurs. what you should do is kill all the little goomba things, and turtle things...all that **** then run forward in the level until you encounter the cloud that throws little green balls at you; run back to the upside down tunnel place. the angry cloud should follow, all the while trying to kill you with its green balls. just before the upside down tunnel, there are 3 of those turtle things. you need one, and they don't come back if you kill them, so DON'T KILL THEM! instead, step on one so that it goes inside its shell, then pick it up. Run with it back to the tunnel, stand on the platform that is just beneath the tunnel, and release the turtle, he should bounce back and forth. now every time the angry cloud throws a green ball at you, the turtle thing that is bouncing back and forth will kill them. the tunnel should protect you from the green balls.(sometimes the timing is off, and the tunnel WON'T protect you...if this is the case try it again, it should protect you eventually, this mis-timed occurance happens about 50% of the time--i hope your lucky, cause it is tough as **** to do). now once you have established this, you will end up with about 75 lives or so before your time runs out. so you can do it another time, or however many times until you have 100 lives.
if you have any questions about this please feel free to e-mail me at firstname.lastname@example.org