Lives
When you die, you will gain a life =
3322-D4DD
When you start, you will only have 1 life =
DDB4-6F07
Start with 9 lives =
D6B4-6F07
..
Many Marios
These codes will allow you to start off as the selected Mario.
Super Mario = 31B7-6F07
Caped Mario =
CBB7-6D67
D4B7-6DA7
3CB7-6FD7
69B7-6..
Jumping for Joy
Low Jump = D02C-AF6F
Super Jump = D42C-AF6F
Mega Jump = DF2C-AF6F
Unlimited Time
C264-64D7
This will allow you to go through the levels without any hurry.
Access any secret exit (Works for any mario world game)
00A6E88D