Do NOT be lazy!
It's a good idea to complete every level in each world because once you have destroyed BOWSER in he's castle in world 8 you have to beat those levels you skipped after you have completed bowser's castle!
When you have done that you will be able to play levels over and over again but you can still get stuff mushroom houses, you can also play against the hammer and boomarang throwing guys and you can play the castles including bowser's again!
I have a inventary full of P wings!
Added by: scarblade234 Dec 8th 2007, ID#11560