I don't take credit. Code Junkies does:
Cheat Codes for New Super Mario Bros
no
A2de-77dad131
You'll need an Action Replay.
A2DE-77dad131
You can't unless you get action replay.
No.Unless you hack the game with action replay,It is not possible.
You can only do it with an action replay.
Buy it at any game store
Look on google. Mohamed Hage
Use a code on action replay.
Buy an Action Replay, put in the codes you want to use, and you have your hacked New Super Mario Bros.
I dont think there are any action replay invincibility codes for Super Mario World on gameboy.