Remember how hard it was to get a perfect scoreon each level in the original? Well, now getting every last flower, star and red coin is twice as tricky, because you have two screens to constantly scan for hidden items and hard to reach goodies. You'll have to aimyour egg even more carefully for that hard-to-reach flower, because often you'll have to shoot across both screens to get it.
That's where one of the games only flaws (and a minor one at that) comes in. The gap between screens causes a blind spot that cuts across the middle of each level, so when you're moving from one screen to the other, it's possible to get hit by unseen enemies or fall off a ledge that was hidden in the gap. You can avoid this by hitting the X button + up/down on the control pad to scroll up or down, allowing you to look before you leap when necessary.