Keep in mind that these codes will only work if entered correctly with the NES game genie cheat cartridge. They are very hard to find. I will give you codes to enter ito the game genie to make your Mario playing time more fun.

~One Player Mode Only~
Start On World 8: enter YSAOPE YEAOZA YEAPYA as a code.
Running Super Jump: enter TPZLTG as a code. (note: this means you will jump higher than the screen shows when you are running regular speed, so you go higher.)

~Two Player Mode Only~
Infinite Lives: enter SXIOPO as a code. (both Mario and Luigi will have infinite lives.)